esplora (Block Explorer APIs)

SANDSHREW hosts a fully-qualified block explorer API within its JSON-RPC which expresses the full suite of functionality surfaced by esplora, the backend developed and used by blockchain.info for their block explorer API. For a developer, the APIs provided by esplora are often desirable, but running a fully-hosted esplora instance is resource-intensive and therefore costly. SANDSHREW provides esplora as part of the fully-hosted cluster to enable serious Bitcoin-powered application deployments without prohibitive dependencies.

Similar to the scheme used for the ord namespace in the SANDSHREW JSON-RPC, the esplora namespace maps a JSON-RPC payload to a REST call to the backend esplora service and proxies its API directly. This translation from JSON-RPC to REST occurs as follows:

For a JSON-RPC payload such as:

{    
    "jsonrpc": "2.0", 
    "id": 1, 
    "method": "esplora_address::txs",
    "params": [
      "bc1pqu8j3dlfwjkzt6tcx6w2dvf9j4wxku2n7mnp9eawegayu6k6x9xsgsff7n"
    ]
}

The component of the JSON-RPC method following the esplora_namespace prefix is a colon-delimited list of components to the full REST path which is forwarded to the ord HTTP server. For any instance that splitting the JSON-RPC method by the colon character produces an empty string (i.e. there are repeated colons with no characters in between), these are taken to be placeholders for parameters to sequentially occupy, as the full REST path is constructed. Excess parameters within the JSON-RPC payload, for which there is no positional placeholder within the RPC method, are appended to the REST path as additional components.

Thus, the JSON-RPC method esplora_address::txs with parameters set to ["bc1pqu8j3dlfwjkzt6tcx6w2dvf9j4wxku2n7mnp9eawegayu6k6x9xsgsff7n"] maps to GET /address/bc1pqu8j3dlfwjkzt6tcx6w2dvf9j4wxku2n7mnp9eawegayu6k6x9xsgsff7n/txs on the esplora service.

The complete schema for the esplora HTTP server is available on the esplora repository, named for the project from which it is forked (electrs). The exact line of code where this section begins is linked below:

electrs/src/rest.rs at new-index · Blockstream/electrsGitHub

Transactions

Tx

esplora_tx returns detailed information about a specific Bitcoin transaction based on its transaction ID (txid). It provides comprehensive data about the transaction, including inputs, outputs, block information, and any associated inscriptions.

curl

curl https://mainnet.sandshrew.io/v1/<developer key> \
  -H 'Content-Type: application/json' \
  -d '{
    "jsonrpc": "2.0", 
    "id": 1, 
    "method": "esplora_tx",
    "params": [
      "ee8532635fd9a102a963075fff90d96d8ecfa9c8c6c15833cef40124dbc84a2c"
    ]
}'

Params

txid: string (required) - Transaction ID

Response

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "txid": "ee8532635fd9a102a963075fff90d96d8ecfa9c8c6c15833cef40124dbc84a2c",
    "version": 1,
    "locktime": 0,
    "vin": [
      {
        "txid": "0000000000000000000000000000000000000000000000000000000000000000",
        "vout": 4294967295,
        "prevout": null,
        "scriptsig": "03367b0c1b4d696e656420627920416e74506f6f6c39373102000101ca9a6d79fabe6d6df565fc9c90c3d1f40e471384b84d69e5720588aea827622e22ec662d5188380e10000000000000000000e3eac000000000000000",
        "scriptsig_asm": "OP_PUSHBYTES_3 367b0c OP_PUSHBYTES_27 4d696e656420627920416e74506f6f6c39373102000101ca9a6d79 OP_RETURN_250 OP_RETURN_190 OP_2DROP OP_2DROP OP_RETURN_245 OP_VERIF OP_RETURN_252 OP_NUMEQUAL OP_ABS OP_RETURN_195 OP_RETURN_209 OP_RETURN_244 OP_PUSHBYTES_14 471384b84d69e5720588aea82762 OP_PUSHBYTES_46 <push past end>",
        "witness": [
          "0000000000000000000000000000000000000000000000000000000000000000"
        ],
        "is_coinbase": true,
        "sequence": 4294967295
      }
    ],
    "vout": [
      {
        "scriptpubkey": "a9144b09d828dfc8baaba5d04ee77397e04b1050cc7387",
        "scriptpubkey_asm": "OP_HASH160 OP_PUSHBYTES_20 4b09d828dfc8baaba5d04ee77397e04b1050cc73 OP_EQUAL",
        "scriptpubkey_type": "p2sh",
        "scriptpubkey_address": "38XnPvu9PmonFU9WouPXUjYbW91wa5MerL",
        "value": 726160425
      },
      {
        "scriptpubkey": "6a24aa21a9ed0fdf8d12166cec30ab3d4f99a9889229aed843a20cd7d8459b08e2010d3d2656",
        "scriptpubkey_asm": "OP_RETURN OP_PUSHBYTES_36 aa21a9ed0fdf8d12166cec30ab3d4f99a9889229aed843a20cd7d8459b08e2010d3d2656",
        "scriptpubkey_type": "op_return",
        "value": 0
      },
      {
        "scriptpubkey": "6a2d434f5245012953559db5cc88ab20b1960faa9793803d0703375997be5a09d05bb9bac27ec60419d0b373f32b20",
        "scriptpubkey_asm": "OP_RETURN OP_PUSHBYTES_45 434f5245012953559db5cc88ab20b1960faa9793803d0703375997be5a09d05bb9bac27ec60419d0b373f32b20",
        "scriptpubkey_type": "op_return",
        "value": 0
      },
      {
        "scriptpubkey": "6a2952534b424c4f434b3ab29c71f95f884e91c2b30efa14e824f3f15bfabd76a58ea791b833270059089a",
        "scriptpubkey_asm": "OP_RETURN OP_PUSHBYTES_41 52534b424c4f434b3ab29c71f95f884e91c2b30efa14e824f3f15bfabd76a58ea791b833270059089a",
        "scriptpubkey_type": "op_return",
        "value": 0
      }
    ],
    "size": 362,
    "weight": 1340,
    "fee": 0,
    "status": {
      "confirmed": true,
      "block_height": 817974,
      "block_hash": "000000000000000000006fc88a9a6f7ef0e4b64143482076f3755faef3bfcbd5",
      "block_time": 1700669241
    }
  }
}

Tx Status

Returns the transaction confirmation status.

Available fields: confirmed (boolean), block_height (optional) and block_hash (optional).

curl

curl https://mainnet.sandshrew.io/v1/<developer key> \
  -H 'Content-Type: application/json' \
  -d '{
    "jsonrpc": "2.0", 
    "id": 1, 
    "method": "esplora_tx::status",
    "params": [
      "ee8532635fd9a102a963075fff90d96d8ecfa9c8c6c15833cef40124dbc84a2c"
    ]
}'

Params

txid: string (required) - Transaction ID

Response

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "confirmed": true,
    "block_height": 817974,
    "block_hash": "000000000000000000006fc88a9a6f7ef0e4b64143482076f3755faef3bfcbd5",
    "block_time": 1700669241
  }
}

Tx Hex

Returns the hex encoded transaction.

curl

curl https://mainnet.sandshrew.io/v1/<developer key> \
  -H 'Content-Type: application/json' \
  -d '{
    "jsonrpc": "2.0", 
    "id": 1, 
    "method": "esplora_tx::hex",
    "params": [
      "ee8532635fd9a102a963075fff90d96d8ecfa9c8c6c15833cef40124dbc84a2c"
    ]
}'

Params

txid: string (required) - Transaction ID

Response

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": "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"
}

Tx Raw

Returns the raw transaction as binary data.

curl

curl https://mainnet.sandshrew.io/v1/<developer key> \
  -H 'Content-Type: application/json' \
  -d '{
    "jsonrpc": "2.0", 
    "id": 1, 
    "method": "esplora_tx::raw",
    "params": [
      "ee8532635fd9a102a963075fff90d96d8ecfa9c8c6c15833cef40124dbc84a2c"
    ]
}'

Params

txid: string (required) - Transaction ID

verbose: string (optional, defaults to "false") - If "false" return a raw string, otherwise return a json object

Response

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": "<raw binary>"
}

Tx Merkleblock Proof

Returns a merkle inclusion proof for the transaction using merkleblock format.

Note: This endpoint is not currently available for Liquid/Elements-based chains.

curl

curl https://mainnet.sandshrew.io/v1/<developer key> \
  -H 'Content-Type: application/json' \
  -d '{
    "jsonrpc": "2.0", 
    "id": 1, 
    "method": "esplora_tx::merkleblock-proof",
    "params": [
      "ee8532635fd9a102a963075fff90d96d8ecfa9c8c6c15833cef40124dbc84a2c"
    ]
}'

Params

txid: string (required) - Transaction ID

Response

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": "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"
}

Tx Merkle-proof

Returns a merkle inclusion proof for the transaction with the following keys:

• block_height

  The height of the block the transaction was confirmed in.

• merkle

  A list of transaction hashes the current hash is paired with, recursively, in order to trace up to obtain merkle root of the block, deepest pairing first.

• pos

  The 0-based index of the position of the transaction in the ordered list of transactions in the block.

curl

curl https://mainnet.sandshrew.io/v1/<developer key> \
  -H 'Content-Type: application/json' \
  -d '{
    "jsonrpc": "2.0", 
    "id": 1, 
    "method": "esplora_tx::merkle-proof",
    "params": [
      "ee8532635fd9a102a963075fff90d96d8ecfa9c8c6c15833cef40124dbc84a2c"
    ]
}'

Params

txid: string (required) - Transaction ID

Response

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "block_height": 817974,
    "merkle": [
      "9416567cde33d0dbce1bc26b5be9bcb3aeaa604a98c31048afe0481392008e86",
      "9e20a1c503c513e9e58c16f48778b54813a2661f9a508a27cb538217594bf59f",
      "4b666550a70a74a3248cce5fab480c1fafe8b8a1cbef99510f5594be6c7735cc",
      "f61bbdf96b3535eb4faa2851245905f089ff63bc3291311f21facf5cc9cef995",
      "b655c33ec492eeca9e0217feb1775e6f9562e5957bfebb5ebf24effb80785985",
      "6b9940bbc2ec556e7d907a60164e2a4c70966be7e58397eb65a009197dd80fb9",
      "93ed212e4da4ce869cd1855f5f10ce9838569a6827e638748a7ad1a2dd73d80d",
      "a3b1bfb426dff5cddf234bec8233173a78fe9da5e5baae2f1cae4ee7125ae012",
      "fda2646cfb6a09e1043d19e75645a2246d058713f7487c2b0ccb61e6401478d5",
      "e9b797a91f353b1b8620dc9d566ffcc48e9be96951e06be0b4cd6d95004da605",
      "ea939b11717a24e807dd3bc58645a5f513c71e8ca8e493b49fc84196de29e7dc",
      "79f5227b3f0fde64d6043d791b0a45e3614f10acf44fac8938b5cb58284a697a",
      "d3e6b026d60766c1f0ad6c27392fcc5200cb5bfd2ff0c48c673edbb363a23c1d"
    ],
    "pos": 0
  }
}

Tx Outspends

Returns the spending status of all transaction outputs.

curl

curl https://mainnet.sandshrew.io/v1/<developer key> \
  -H 'Content-Type: application/json' \
  -d '{
    "jsonrpc": "2.0", 
    "id": 1, 
    "method": "esplora_tx::outspends",
    "params": [
      "b0ba58a69a7b11dfac81351af9c011bd52168346e8cc3311e1282e335a4728fb"
    ]
}'

Params

txid: string (required) - Transaction ID

Response

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": [
    {
      "spent": false
    },
    {
      "spent": false
    },
    {
      "spent": true,
      "txid": "9416567cde33d0dbce1bc26b5be9bcb3aeaa604a98c31048afe0481392008e86",
      "vin": 0,
      "status": {
        "confirmed": true,
        "block_height": 817974,
        "block_hash": "000000000000000000006fc88a9a6f7ef0e4b64143482076f3755faef3bfcbd5",
        "block_time": 1700669241
      }
    },
    {
      "spent": false
    },
    {
      "spent": false
    },
    {
      "spent": true,
      "txid": "6ef9ea136a0dfddb31b75b2363b640425e71ef47b4a21e5b95a054c47e3b4449",
      "vin": 4,
      "status": {
        "confirmed": true,
        "block_height": 817817,
        "block_hash": "000000000000000000038e07b5e8eaa8bd723fba908fe73019f730d4f503a049",
        "block_time": 1700582788
      }
    }
  ]
}

Tx Outspend

Returns the spending status of a specific transaction output.

curl

curl https://mainnet.sandshrew.io/v1/<developer key> \
  -H 'Content-Type: application/json' \
  -d '{
    "jsonrpc": "2.0", 
    "id": 1, 
    "method": "esplora_tx::outspend",
    "params": [
      "b0ba58a69a7b11dfac81351af9c011bd52168346e8cc3311e1282e335a4728fb",
      "2"
    ]
}'

Params

txid: string (required) - Transaction ID

vout: string (required) - The number of the transaction output

Response

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "spent": true,
    "txid": "9416567cde33d0dbce1bc26b5be9bcb3aeaa604a98c31048afe0481392008e86",
    "vin": 0,
    "status": {
      "confirmed": true,
      "block_height": 817974,
      "block_hash": "000000000000000000006fc88a9a6f7ef0e4b64143482076f3755faef3bfcbd5",
      "block_time": 1700669241
    }
  }
}

Addresses

Address Info

Returns details about an address.

curl

curl https://mainnet.sandshrew.io/v1/<developer key> \
  -H 'Content-Type: application/json' \
  -d '{
    "jsonrpc": "2.0", 
    "id": 1, 
    "method": "esplora_address",
    "params": [
      "bc1q90ly9f57xa6349nhdjq4zwguq4w2rdrqgfgtd7"
    ]
}'

Params

address: string (required) - Bitcoin address

Response

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "address": "bc1q90ly9f57xa6349nhdjq4zwguq4w2rdrqgfgtd7",
    "chain_stats": {
      "funded_txo_count": 5,
      "funded_txo_sum": 9141224,
      "spent_txo_count": 2,
      "spent_txo_sum": 5975682,
      "tx_count": 5
    },
    "mempool_stats": {
      "funded_txo_count": 0,
      "funded_txo_sum": 0,
      "spent_txo_count": 0,
      "spent_txo_sum": 0,
      "tx_count": 0
    }
  }
}

Address Tx History

Get transaction history for the specified address. Returns up to 50 mempool transactions plus the first 25 confirmed transactions. You can request more confirmed transactions using last_seen_txid.

curl

curl https://mainnet.sandshrew.io/v1/<developer key> \
  -H 'Content-Type: application/json' \
  -d '{
    "jsonrpc": "2.0", 
    "id": 1, 
    "method": "esplora_address::txs",
    "params": [
      "bc1pqu8j3dlfwjkzt6tcx6w2dvf9j4wxku2n7mnp9eawegayu6k6x9xsgsff7n"
    ]
}'

Params

address: string (required) - Bitcoin address

Response

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": [
    {
      "txid": "f719010042cda872a6add2f98a51c3e0f9997a6d9cd92c321c8dab9ef69350be",
      "version": 2,
      "locktime": 0,
      "vin": [
        {
          "txid": "23ac1179890cfed9d3b9cdb290ad4c98f890ec0781a3de1f7600ee5d48e06853",
          "vout": 0,
          "prevout": {
            "scriptpubkey": "5120070f28b7e974ac25e978369ca6b125955c6b7153f6e612e7aeca3a4e6ada314d",
            "scriptpubkey_asm": "OP_PUSHNUM_1 OP_PUSHBYTES_32 070f28b7e974ac25e978369ca6b125955c6b7153f6e612e7aeca3a4e6ada314d",
            "scriptpubkey_type": "v1_p2tr",
            "scriptpubkey_address": "bc1pqu8j3dlfwjkzt6tcx6w2dvf9j4wxku2n7mnp9eawegayu6k6x9xsgsff7n",
            "value": 16000
          },
          "scriptsig": "",
          "scriptsig_asm": "",
          "witness": [
            "e0e706d5cfbf1d8cea1d8ffecb1b00f99897f293002660b23ded35fb35144aade62227a49ad634e916cdff6ca57620a1c207ae53738f35292e341e7e865264cb",
            "20fc19540a13a609121f98a939348df194fbf59c6ffa8f5aec099207dc14a395aeac0063036f7264010118746578742f706c61696e3b636861727365743d7574662d3800357b2270223a226272632d3230222c226f70223a226d696e74222c227469636b223a22746f696c222c22616d74223a2231303030227d68",
            "c151cae3bc8e151ca21c4a093362d6aab05a25bb5693cdf5a6861cf5eb59402272"
          ],
          "is_coinbase": false,
          "sequence": 4294967293
        }
      ],
      "vout": [
        {
          "scriptpubkey": "51201ef4bb672ee1bc1014c72f7ead247e5e495a1c35ed61376ce1b68f1e1f99d400",
          "scriptpubkey_asm": "OP_PUSHNUM_1 OP_PUSHBYTES_32 1ef4bb672ee1bc1014c72f7ead247e5e495a1c35ed61376ce1b68f1e1f99d400",
          "scriptpubkey_type": "v1_p2tr",
          "scriptpubkey_address": "bc1prm6tkeewux7pq9x89al26fr7tey458p4a4snwm8pk683u8ue6sqqekcchr",
          "value": 546
        },
        {
          "scriptpubkey": "001488e946652af2729f12abc03120387d152e9c22fa",
          "scriptpubkey_asm": "OP_0 OP_PUSHBYTES_20 88e946652af2729f12abc03120387d152e9c22fa",
          "scriptpubkey_type": "v0_p2wpkh",
          "scriptpubkey_address": "bc1q3r55vef27fef7y4tcqcjqwraz5hfcgh6yl645u",
          "value": 2532
        }
      ],
      "size": 351,
      "weight": 726,
      "fee": 12922,
      "status": {
        "confirmed": true,
        "block_height": 817831,
        "block_hash": "000000000000000000013873daaff66f8ec5b48075babbfcccac831a00c8c767",
        "block_time": 1700589870
      }
    },
    {
      "txid": "23ac1179890cfed9d3b9cdb290ad4c98f890ec0781a3de1f7600ee5d48e06853",
      "version": 2,
      "locktime": 0,
      "vin": [
        {
          "txid": "9d92bea825ec5736f7cb0bb8b952b6bb0b7dc6f13f300245b2aece25acb31ef8",
          "vout": 1,
          "prevout": {
            "scriptpubkey": "00142bfe42a69e37751a96776c8151391c055ca1b460",
            "scriptpubkey_asm": "OP_0 OP_PUSHBYTES_20 2bfe42a69e37751a96776c8151391c055ca1b460",
            "scriptpubkey_type": "v0_p2wpkh",
            "scriptpubkey_address": "bc1q90ly9f57xa6349nhdjq4zwguq4w2rdrqgfgtd7",
            "value": 2975682
          },
          "scriptsig": "",
          "scriptsig_asm": "",
          "witness": [
            "3045022100c4be8d0a8ef2d0179fe7ccb2c36f37ffbe75dd9632da1f2d6bd2ac2326dc8ebc022021066387ff665c7e2072bca8c3c1324795edd8a5885208d3ef002af4b7179f1a01",
            "026de43f1d41eeba32b31ad449edb28ef0390b97828d7c76f61cbcc8cc4de64123"
          ],
          "is_coinbase": false,
          "sequence": 4294967295
        }
      ],
      "vout": [
        {
          "scriptpubkey": "5120070f28b7e974ac25e978369ca6b125955c6b7153f6e612e7aeca3a4e6ada314d",
          "scriptpubkey_asm": "OP_PUSHNUM_1 OP_PUSHBYTES_32 070f28b7e974ac25e978369ca6b125955c6b7153f6e612e7aeca3a4e6ada314d",
          "scriptpubkey_type": "v1_p2tr",
          "scriptpubkey_address": "bc1pqu8j3dlfwjkzt6tcx6w2dvf9j4wxku2n7mnp9eawegayu6k6x9xsgsff7n",
          "value": 16000
        },
        {
          "scriptpubkey": "00142bfe42a69e37751a96776c8151391c055ca1b460",
          "scriptpubkey_asm": "OP_0 OP_PUSHBYTES_20 2bfe42a69e37751a96776c8151391c055ca1b460",
          "scriptpubkey_type": "v0_p2wpkh",
          "scriptpubkey_address": "bc1q90ly9f57xa6349nhdjq4zwguq4w2rdrqgfgtd7",
          "value": 2948765
        }
      ],
      "size": 235,
      "weight": 610,
      "fee": 10917,
      "status": {
        "confirmed": true,
        "block_height": 817831,
        "block_hash": "000000000000000000013873daaff66f8ec5b48075babbfcccac831a00c8c767",
        "block_time": 1700589870
      }
    }
  ]
}

Address Confirmed Tx

Get confirmed transaction history for the specified address, sorted with newest first. Returns 25 transactions per page. More can be requested by specifying the last_seen_txid seen by the previous query.

curl

curl https://mainnet.sandshrew.io/v1/<developer key> \
  -H 'Content-Type: application/json' \
  -d '{
    "jsonrpc": "2.0", 
    "id": 1, 
    "method": "esplora_address::txs:chain",
    "params": [
      "bc1q90ly9f57xa6349nhdjq4zwguq4w2rdrqgfgtd7"
    ]
}'

Params

address: string (required) - Bitcoin address

last_seen_txid: string (optional) - Transaction ID from previous query

Response

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": [
    {
      "txid": "23ac1179890cfed9d3b9cdb290ad4c98f890ec0781a3de1f7600ee5d48e06853",
      "version": 2,
      "locktime": 0,
      "vin": [
        {
          "txid": "9d92bea825ec5736f7cb0bb8b952b6bb0b7dc6f13f300245b2aece25acb31ef8",
          "vout": 1,
          "prevout": {
            "scriptpubkey": "00142bfe42a69e37751a96776c8151391c055ca1b460",
            "scriptpubkey_asm": "OP_0 OP_PUSHBYTES_20 2bfe42a69e37751a96776c8151391c055ca1b460",
            "scriptpubkey_type": "v0_p2wpkh",
            "scriptpubkey_address": "bc1q90ly9f57xa6349nhdjq4zwguq4w2rdrqgfgtd7",
            "value": 2975682
          },
          "scriptsig": "",
          "scriptsig_asm": "",
          "witness": [
            "3045022100c4be8d0a8ef2d0179fe7ccb2c36f37ffbe75dd9632da1f2d6bd2ac2326dc8ebc022021066387ff665c7e2072bca8c3c1324795edd8a5885208d3ef002af4b7179f1a01",
            "026de43f1d41eeba32b31ad449edb28ef0390b97828d7c76f61cbcc8cc4de64123"
          ],
          "is_coinbase": false,
          "sequence": 4294967295
        }
      ],
      "vout": [
        {
          "scriptpubkey": "5120070f28b7e974ac25e978369ca6b125955c6b7153f6e612e7aeca3a4e6ada314d",
          "scriptpubkey_asm": "OP_PUSHNUM_1 OP_PUSHBYTES_32 070f28b7e974ac25e978369ca6b125955c6b7153f6e612e7aeca3a4e6ada314d",
          "scriptpubkey_type": "v1_p2tr",
          "scriptpubkey_address": "bc1pqu8j3dlfwjkzt6tcx6w2dvf9j4wxku2n7mnp9eawegayu6k6x9xsgsff7n",
          "value": 16000
        },
        {
          "scriptpubkey": "00142bfe42a69e37751a96776c8151391c055ca1b460",
          "scriptpubkey_asm": "OP_0 OP_PUSHBYTES_20 2bfe42a69e37751a96776c8151391c055ca1b460",
          "scriptpubkey_type": "v0_p2wpkh",
          "scriptpubkey_address": "bc1q90ly9f57xa6349nhdjq4zwguq4w2rdrqgfgtd7",
          "value": 2948765
        }
      ],
      "size": 235,
      "weight": 610,
      "fee": 10917,
      "status": {
        "confirmed": true,
        "block_height": 817831,
        "block_hash": "000000000000000000013873daaff66f8ec5b48075babbfcccac831a00c8c767",
        "block_time": 1700589870
      }
    }
  ]
}

Addr Mempool Tx

Get unconfirmed transaction history for the specified address. Returns up to 50 transactions (no paging).

curl

curl https://mainnet.sandshrew.io/v1/<developer key> \
  -H 'Content-Type: application/json' \
  -d '{
    "jsonrpc": "2.0", 
    "id": 1, 
    "method": "esplora_address::txs:mempool",
    "params": [
      "bc1pqu8j3dlfwjkzt6tcx6w2dvf9j4wxku2n7mnp9eawegayu6k6x9xsgsff7n"
    ]
}'

Params

address: string (required) - Bitcoin address

Addr UTXOs

Get the list of unspent transaction outputs associated with the address.

curl

curl https://mainnet.sandshrew.io/v1/<developer key> \
  -H 'Content-Type: application/json' \
  -d '{
    "jsonrpc": "2.0", 
    "id": 1, 
    "method": "esplora_address::utxo",
    "params": [
      "bc1q90ly9f57xa6349nhdjq4zwguq4w2rdrqgfgtd7"
    ]
}'

Params

address: string (required) - Bitcoin address

Response

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": [
    {
      "txid": "32c99ef2048481d70040c7338e50bc9682de389506a55448b051ef8d893aee6e",
      "vout": 0,
      "status": {
        "confirmed": true,
        "block_height": 817824,
        "block_hash": "000000000000000000036133fc5e75e5bb3656f2aaedb6f7a06e1997e1627bd7",
        "block_time": 1700585869
      },
      "value": 546
    },
    {
      "txid": "23ac1179890cfed9d3b9cdb290ad4c98f890ec0781a3de1f7600ee5d48e06853",
      "vout": 1,
      "status": {
        "confirmed": true,
        "block_height": 817831,
        "block_hash": "000000000000000000013873daaff66f8ec5b48075babbfcccac831a00c8c767",
        "block_time": 1700589870
      },
      "value": 2948765
    },
    {
      "txid": "37a5e179b008f956bd00a3e07444f9cc747d6b9deaaa05b8eacd073b3108f4e2",
      "vout": 10,
      "status": {
        "confirmed": true,
        "block_height": 816621,
        "block_hash": "0000000000000000000355718a4955b850b1c5b17db6ae6a01962245b5ab7149",
        "block_time": 1699894589
      },
      "value": 216231
    }
  ]
}

Scripthash

A script hash is the hash of the binary bytes of the locking script (ScriptPubKey), expressed as a hexadecimal string. The hash function to use is currently sha256().

For example, the legacy Bitcoin address from the genesis block:

const address = '1A1zP1eP5QGefi2DMPTfTL5SLmv7DivfNa'

has P2PKH scriptpubkey:

const script = bitcoin.address.toOutputScript(address)
console.log('script.toString('hex'))

// 76a91462e907b15cbf27d5425399ebf6f0fb50ebb88f1888ac

with SHA256 hash, the scripthash:

const hash = bitcoin.crypto.sha256(script)
console.log('Scripthash: ', hash.toString('hex'))

// Scripthash: 6191c3b590bfcfa0475e877c302da1e323497acf3b42c08d8fa28e364edf018b

which is sent to the server reversed as:

const reversedHash = hash.reverse()
console.log(reversedHash.toString('hex'))

// 8b01df4e368ea28f8dc0423bcf7a4923e3a12d307c875e47a0cfbf90b5c39161

By subscribing to this hash you can find P2PK payments to the genesis block public key.

Scripthash Info

Get chain and mempool stats for a scripthash (script pub key).

curl

curl https://mainnet.sandshrew.io/v1/<developer key> \
  -H 'Content-Type: application/json' \
  -d '{
    "jsonrpc": "2.0", 
    "id": 1, 
    "method": "esplora_scripthash",
    "params": [
      "6191c3b590bfcfa0475e877c302da1e323497acf3b42c08d8fa28e364edf018b"
    ]
}'

Params

script_hash: string (required) - Script hash

Response

{
    "jsonrpc": "2.0",
    "id": 1,
    "result": {
        "chain_stats": {
            "funded_txo_count": 6675,
            "funded_txo_sum": 4967680559,
            "spent_txo_count": 0,
            "spent_txo_sum": 0,
            "tx_count": 6620
        },
        "mempool_stats": {
            "funded_txo_count": 1,
            "funded_txo_sum": 2450,
            "spent_txo_count": 0,
            "spent_txo_sum": 0,
            "tx_count": 1
        },
        "scripthash": "6191c3b590bfcfa0475e877c302da1e323497acf3b42c08d8fa28e364edf018b"
    }
}

Scripthash Tx History

Get transaction history for the specified address/scripthash, sorted with newest first.

Returns up to 50 mempool transactions plus the first 25 confirmed transactions. You can request more confirmed transactions using last_seen_txid.

beg

curl

curl https://mainnet.sandshrew.io/v1/<developer key> \
  -H 'Content-Type: application/json' \
  -d '{
    "jsonrpc": "2.0", 
    "id": 1, 
    "method": "esplora_scripthash::txs",
    "params": [
      "6191c3b590bfcfa0475e877c302da1e323497acf3b42c08d8fa28e364edf018b"
    ]
}'

Params

script_hash: string (required) - Script hash

Response

{
    "jsonrpc": "2.0",
    "id": 1,
    "result": [
        {
            "txid": "255016ede76fad37d082f811ec4355a0b1dae7e9f5ac6c3b707f411ef2c4c046",
            "version": 1,
            "locktime": 0,
            "vin": [
                {
                    "txid": "45e8094a5e906dbd1861771f91c2e0c3020ae565781248139eb6a41d3dc6c5ab",
                    "vout": 1,
                    "prevout": {
                        "scriptpubkey": "5120b59e955d58211345464b668cf9adb82dfa1cbb57ff2e692d18a119ee5d24dcbe",
                        "scriptpubkey_asm": "OP_PUSHNUM_1 OP_PUSHBYTES_32 b59e955d58211345464b668cf9adb82dfa1cbb57ff2e692d18a119ee5d24dcbe",
                        "scriptpubkey_type": "v1_p2tr",
                        "scriptpubkey_address": "bc1pkk0f2h2cyyf523jtv6x0ntdc9hapew6hluhxjtgc5yv7uhfymjlq9ff3hq",
                        "value": 10563760
                    },
                    "scriptsig": "",
                    "scriptsig_asm": "",
                    "witness": [
                        "a78f1f170eaa758f00c380a138f39cbf30d4e6a367632a606a6066bea55805c90181f9b2be5a837b694f27dbde8bbba8d1ad4b4edbda494c31603a7c2dc05e47"
                    ],
                    "is_coinbase": false,
                    "sequence": 4294967295
                }
            ],
            "vout": [
                {
                    "scriptpubkey": "76a91462e907b15cbf27d5425399ebf6f0fb50ebb88f1888ac",
                    "scriptpubkey_asm": "OP_DUP OP_HASH160 OP_PUSHBYTES_20 62e907b15cbf27d5425399ebf6f0fb50ebb88f18 OP_EQUALVERIFY OP_CHECKSIG",
                    "scriptpubkey_type": "p2pkh",
                    "scriptpubkey_address": "1A1zP1eP5QGefi2DMPTfTL5SLmv7DivfNa",
                    "value": 2450
                },
                {
                    "scriptpubkey": "51201e5973cd6884d0159e119f2d809a7f0753449b37c82c348f275cc00ff5ee67f9",
                    "scriptpubkey_asm": "OP_PUSHNUM_1 OP_PUSHBYTES_32 1e5973cd6884d0159e119f2d809a7f0753449b37c82c348f275cc00ff5ee67f9",
                    "scriptpubkey_type": "v1_p2tr",
                    "scriptpubkey_address": "bc1prevh8ntgsngpt8s3nukcpxnlqaf5fxeheqkrfre8tnqqla0wvlusm97nr0",
                    "value": 10557660
                }
            ],
            "size": 196,
            "weight": 580,
            "fee": 3650,
            "status": {
                "confirmed": false
            }
        },
        etc...
    ]
}

Scripthash Confirmed Tx

Get confirmed transaction history for the specified address/scripthash, sorted with newest first.

Returns 25 transactions per page. More can be requested by specifying the last txid seen by the previous query.

curl

curl https://mainnet.sandshrew.io/v1/<developer key> \
  -H 'Content-Type: application/json' \
  -d '{
    "jsonrpc": "2.0", 
    "id": 1, 
    "method": "esplora_scripthash::txs:chain",
    "params": [
      "6191c3b590bfcfa0475e877c302da1e323497acf3b42c08d8fa28e364edf018b"
    ]
}'

Params

script_hash: string (required) - Script hash

last_seen_txid: string (optional) - Transaction ID from previous query

Response

{
    "jsonrpc": "2.0",
    "id": 1,
    "result": [
        {
            "txid": "bbcf0c04477488800f0495dacc2998733431cc8e15136a58af3c5f8a92731be2",
            "version": 2,
            "locktime": 824790,
            "vin": [
                {
                    "txid": "6db9bf86ce7a290ddf3faa66af7cf5db02bd1b7ad898985b25e50ffccc118fc4",
                    "vout": 1,
                    "prevout": {
                        "scriptpubkey": "5120c6407c0e84d5dfeeb6b235f3fa64e866228628bb16412aa1ec15c4232c5a2be1",
                        "scriptpubkey_asm": "OP_PUSHNUM_1 OP_PUSHBYTES_32 c6407c0e84d5dfeeb6b235f3fa64e866228628bb16412aa1ec15c4232c5a2be1",
                        "scriptpubkey_type": "v1_p2tr",
                        "scriptpubkey_address": "bc1pceq8cr5y6h07ad4jxhel5e8gvc3gv29mzeqj4g0vzhzzxtz690ss3vpnjp",
                        "value": 32910
                    },
                    "scriptsig": "",
                    "scriptsig_asm": "",
                    "witness": [
                        "6125622a652f8d09f2ba347c8ab838f37d48fce14156a12fd23be59962ae580aa754e6db7d27dda75d4bac48fd1688c3c8c5bc91ebc7d5328ec6f2d5551019d7"
                    ],
                    "is_coinbase": false,
                    "sequence": 4294967293
                }
            ],
            "vout": [
                {
                    "scriptpubkey": "76a91462e907b15cbf27d5425399ebf6f0fb50ebb88f1888ac",
                    "scriptpubkey_asm": "OP_DUP OP_HASH160 OP_PUSHBYTES_20 62e907b15cbf27d5425399ebf6f0fb50ebb88f18 OP_EQUALVERIFY OP_CHECKSIG",
                    "scriptpubkey_type": "p2pkh",
                    "scriptpubkey_address": "1A1zP1eP5QGefi2DMPTfTL5SLmv7DivfNa",
                    "value": 16193
                }
            ],
            "size": 153,
            "weight": 408,
            "fee": 16717,
            "status": {
                "confirmed": true,
                "block_height": 824791,
                "block_hash": "0000000000000000000285841a02f0a9de3adb288708cad7df957b88642c8c75",
                "block_time": 1704667936
            }
        },
        etc,,,
    ]
}

Scripthash Mempool Tx

Get unconfirmed transaction history for the specified address/scripthash.

Returns up to 50 transactions (no paging).

curl

curl https://mainnet.sandshrew.io/v1/<developer key> \
  -H 'Content-Type: application/json' \
  -d '{
    "jsonrpc": "2.0", 
    "id": 1, 
    "method": "esplora_scripthash::txs:mempool",
    "params": [
      "6191c3b590bfcfa0475e877c302da1e323497acf3b42c08d8fa28e364edf018b"
    ]
}'

Params

script_hash: string (required) - Script hash

Response

{
    "jsonrpc": "2.0",
    "id": 1,
    "result": [
        {
            "txid": "255016ede76fad37d082f811ec4355a0b1dae7e9f5ac6c3b707f411ef2c4c046",
            "version": 1,
            "locktime": 0,
            "vin": [
                {
                    "txid": "45e8094a5e906dbd1861771f91c2e0c3020ae565781248139eb6a41d3dc6c5ab",
                    "vout": 1,
                    "prevout": {
                        "scriptpubkey": "5120b59e955d58211345464b668cf9adb82dfa1cbb57ff2e692d18a119ee5d24dcbe",
                        "scriptpubkey_asm": "OP_PUSHNUM_1 OP_PUSHBYTES_32 b59e955d58211345464b668cf9adb82dfa1cbb57ff2e692d18a119ee5d24dcbe",
                        "scriptpubkey_type": "v1_p2tr",
                        "scriptpubkey_address": "bc1pkk0f2h2cyyf523jtv6x0ntdc9hapew6hluhxjtgc5yv7uhfymjlq9ff3hq",
                        "value": 10563760
                    },
                    "scriptsig": "",
                    "scriptsig_asm": "",
                    "witness": [
                        "a78f1f170eaa758f00c380a138f39cbf30d4e6a367632a606a6066bea55805c90181f9b2be5a837b694f27dbde8bbba8d1ad4b4edbda494c31603a7c2dc05e47"
                    ],
                    "is_coinbase": false,
                    "sequence": 4294967295
                }
            ],
            "vout": [
                {
                    "scriptpubkey": "76a91462e907b15cbf27d5425399ebf6f0fb50ebb88f1888ac",
                    "scriptpubkey_asm": "OP_DUP OP_HASH160 OP_PUSHBYTES_20 62e907b15cbf27d5425399ebf6f0fb50ebb88f18 OP_EQUALVERIFY OP_CHECKSIG",
                    "scriptpubkey_type": "p2pkh",
                    "scriptpubkey_address": "1A1zP1eP5QGefi2DMPTfTL5SLmv7DivfNa",
                    "value": 2450
                },
                {
                    "scriptpubkey": "51201e5973cd6884d0159e119f2d809a7f0753449b37c82c348f275cc00ff5ee67f9",
                    "scriptpubkey_asm": "OP_PUSHNUM_1 OP_PUSHBYTES_32 1e5973cd6884d0159e119f2d809a7f0753449b37c82c348f275cc00ff5ee67f9",
                    "scriptpubkey_type": "v1_p2tr",
                    "scriptpubkey_address": "bc1prevh8ntgsngpt8s3nukcpxnlqaf5fxeheqkrfre8tnqqla0wvlusm97nr0",
                    "value": 10557660
                }
            ],
            "size": 196,
            "weight": 580,
            "fee": 3650,
            "status": {
                "confirmed": false
            }
        }
    ]
}

Scripthash UTXOs

Get the list of unspent transaction outputs associated with the scripthash.

curl

curl https://mainnet.sandshrew.io/v1/<developer key> \
  -H 'Content-Type: application/json' \
  -d '{
    "jsonrpc": "2.0", 
    "id": 1, 
    "method": "esplora_scripthash::utxo",
    "params": [
      "124ce9c09e50af4913187bd0563bdb319d0d7ccdc48e5d1ca8e7061e14dc6d65"
    ]
}'

Params

script_hash: string (required) - Script hash

Response

{
    "jsonrpc": "2.0",
    "id": 1,
    "result": [
        {
            "txid": "37a5e179b008f956bd00a3e07444f9cc747d6b9deaaa05b8eacd073b3108f4e2",
            "vout": 10,
            "status": {
                "confirmed": true,
                "block_height": 816621,
                "block_hash": "0000000000000000000355718a4955b850b1c5b17db6ae6a01962245b5ab7149",
                "block_time": 1699894589
            },
            "value": 216231
        },
        {
            "txid": "32c99ef2048481d70040c7338e50bc9682de389506a55448b051ef8d893aee6e",
            "vout": 0,
            "status": {
                "confirmed": true,
                "block_height": 817824,
                "block_hash": "000000000000000000036133fc5e75e5bb3656f2aaedb6f7a06e1997e1627bd7",
                "block_time": 1700585869
            },
            "value": 546
        },
        {
            "txid": "f66e5657d73c6a34e04bb9873cf2b32cbaa626163542178cfad2c29d0bb1acdc",
            "vout": 1,
            "status": {
                "confirmed": true,
                "block_height": 818015,
                "block_hash": "00000000000000000002e6710101233b85e9977b8864239edce6ef0a3728993f",
                "block_time": 1700692462
            },
            "value": 2921695
        }
    ]
}

Blocks

Block Info

Returns information about a block.

The response from this endpoint can be cached indefinitely.

curl

curl https://mainnet.sandshrew.io/v1/<developer key> \
  -H 'Content-Type: application/json' \
  -d '{
    "jsonrpc": "2.0", 
    "id": 1, 
    "method": "esplora_block",
    "params": [
      "000000000000000000006fc88a9a6f7ef0e4b64143482076f3755faef3bfcbd5"
    ]
}'

Params

block_hash: string (required) - Hash of the block

Response

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "id": "000000000000000000006fc88a9a6f7ef0e4b64143482076f3755faef3bfcbd5",
    "height": 817974,
    "version": 766967808,
    "timestamp": 1700669241,
    "tx_count": 4171,
    "size": 1671331,
    "weight": 3993538,
    "merkle_root": "a1dcb22526b8fb90ca21f9c5d9dec6a93d0cd4e203522d619e51a793e747ccf9",
    "previousblockhash": "000000000000000000018e05507a89895d04722c1805a856ca799d4dc4b7b7fd",
    "mediantime": 1700666768,
    "nonce": 2679170464,
    "bits": 386161170,
    "difficulty": 64678587803496
  }
}

Block Header

Returns the hex-encoded block header.

The response from this endpoint can be cached indefinitely.

curl

curl https://mainnet.sandshrew.io/v1/<developer key> \
  -H 'Content-Type: application/json' \
  -d '{
    "jsonrpc": "2.0", 
    "id": 1, 
    "method": "esplora_block::header",
    "params": [
      "000000000000000000006fc88a9a6f7ef0e4b64143482076f3755faef3bfcbd5"
    ]
}'

Params

block_hash: string (required) - Block hash

Response

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": "0000b72dfdb7b7c44d9d79ca56a805182c72045d89897a50058e01000000000000000000f9cc47e793a7519e612d5203e2d40c3da9c6ded9c5f921ca90fbb82625b2dca139275e65125a0417a0e5b09f"
}

Block Status

Returns the block status.

Available fields: in_best_chain (boolean, false for orphaned blocks), next_best (the hash of the next block, only available for blocks in the best chain).

curl

curl https://mainnet.sandshrew.io/v1/<developer key> \
  -H 'Content-Type: application/json' \
  -d '{
    "jsonrpc": "2.0", 
    "id": 1, 
    "method": "esplora_block::status",
    "params": [
      "000000000000000000006fc88a9a6f7ef0e4b64143482076f3755faef3bfcbd5"
    ]
}'

Params

block_hash: string (required) - Block hash

Response

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "in_best_chain": true,
    "height": 817974,
    "next_best": "0000000000000000000343455b0ed6eb9929474c2ac72f6ed93788bd314ddaa9"
  }
}

Tx Data by Block Hash

Returns a list of transactions in the block (up to 25 transactions beginning at start_index).

The response from this endpoint can be cached indefinitely.

curl

curl https://mainnet.sandshrew.io/v1/<developer key> \
  -H 'Content-Type: application/json' \
  -d '{
    "jsonrpc": "2.0", 
    "id": 1, 
    "method": "esplora_block::txs",
    "params": [
      "000000000000000000006fc88a9a6f7ef0e4b64143482076f3755faef3bfcbd5",
      '25'
    ]
}'

Params

block_hash: string (required) - Block hash

start_index: string (optional) - Start index (must be multiple of 25)

Response

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": [
    {
      "txid": "ee8532635fd9a102a963075fff90d96d8ecfa9c8c6c15833cef40124dbc84a2c",
      "version": 1,
      "locktime": 0,
      "vin": [
        {
          "txid": "0000000000000000000000000000000000000000000000000000000000000000",
          "vout": 4294967295,
          "prevout": null,
          "scriptsig": "03367b0c1b4d696e656420627920416e74506f6f6c39373102000101ca9a6d79fabe6d6df565fc9c90c3d1f40e471384b84d69e5720588aea827622e22ec662d5188380e10000000000000000000e3eac000000000000000",
          "scriptsig_asm": "OP_PUSHBYTES_3 367b0c OP_PUSHBYTES_27 4d696e656420627920416e74506f6f6c39373102000101ca9a6d79 OP_RETURN_250 OP_RETURN_190 OP_2DROP OP_2DROP OP_RETURN_245 OP_VERIF OP_RETURN_252 OP_NUMEQUAL OP_ABS OP_RETURN_195 OP_RETURN_209 OP_RETURN_244 OP_PUSHBYTES_14 471384b84d69e5720588aea82762 OP_PUSHBYTES_46 <push past end>",
          "witness": [
            "0000000000000000000000000000000000000000000000000000000000000000"
          ],
          "is_coinbase": true,
          "sequence": 4294967295
        }
      ],
      "vout": [
        {
          "scriptpubkey": "a9144b09d828dfc8baaba5d04ee77397e04b1050cc7387",
          "scriptpubkey_asm": "OP_HASH160 OP_PUSHBYTES_20 4b09d828dfc8baaba5d04ee77397e04b1050cc73 OP_EQUAL",
          "scriptpubkey_type": "p2sh",
          "scriptpubkey_address": "38XnPvu9PmonFU9WouPXUjYbW91wa5MerL",
          "value": 726160425
        },
        {
          "scriptpubkey": "6a24aa21a9ed0fdf8d12166cec30ab3d4f99a9889229aed843a20cd7d8459b08e2010d3d2656",
          "scriptpubkey_asm": "OP_RETURN OP_PUSHBYTES_36 aa21a9ed0fdf8d12166cec30ab3d4f99a9889229aed843a20cd7d8459b08e2010d3d2656",
          "scriptpubkey_type": "op_return",
          "value": 0
        },
        {
          "scriptpubkey": "6a2d434f5245012953559db5cc88ab20b1960faa9793803d0703375997be5a09d05bb9bac27ec60419d0b373f32b20",
          "scriptpubkey_asm": "OP_RETURN OP_PUSHBYTES_45 434f5245012953559db5cc88ab20b1960faa9793803d0703375997be5a09d05bb9bac27ec60419d0b373f32b20",
          "scriptpubkey_type": "op_return",
          "value": 0
        },
        {
          "scriptpubkey": "6a2952534b424c4f434b3ab29c71f95f884e91c2b30efa14e824f3f15bfabd76a58ea791b833270059089a",
          "scriptpubkey_asm": "OP_RETURN OP_PUSHBYTES_41 52534b424c4f434b3ab29c71f95f884e91c2b30efa14e824f3f15bfabd76a58ea791b833270059089a",
          "scriptpubkey_type": "op_return",
          "value": 0
        }
      ],
      "size": 362,
      "weight": 1340,
      "fee": 0,
      "status": {
        "confirmed": true,
        "block_height": 817974,
        "block_hash": "000000000000000000006fc88a9a6f7ef0e4b64143482076f3755faef3bfcbd5",
        "block_time": 1700669241
      }
    },
    {
      "txid": "9416567cde33d0dbce1bc26b5be9bcb3aeaa604a98c31048afe0481392008e86",
      "version": 2,
      "locktime": 0,
      "vin": [
        {
          "txid": "b0ba58a69a7b11dfac81351af9c011bd52168346e8cc3311e1282e335a4728fb",
          "vout": 2,
          "prevout": {
            "scriptpubkey": "51208ea56cf7a5d036b17128c6b96d05961f2fc53438ee900d93464a215cf2df062c",
            "scriptpubkey_asm": "OP_PUSHNUM_1 OP_PUSHBYTES_32 8ea56cf7a5d036b17128c6b96d05961f2fc53438ee900d93464a215cf2df062c",
            "scriptpubkey_type": "v1_p2tr",
            "scriptpubkey_address": "bc1p36jkeaa96qmtzufgc6uk6pvkruhu2dpca6gqmy6xfgs4euklqckqcjy2ke",
            "value": 2049990
          },
          "scriptsig": "",
          "scriptsig_asm": "",
          "witness": [
            "a700383e55e90b43672ba45b732a1f1de9f9edeef92233585ac6899e96ddba9899967cbf5dce1d7e5a02cce81c05d123ddc2c7faa40a1fbeb6351bd72324e547"
          ],
          "is_coinbase": false,
          "sequence": 4294967295
        }
      ],
      "vout": [
        {
          "scriptpubkey": "51209bf64e41fbfac00b07592a9fddf52b7d0b5a0aec360c3247c68359ea1cfa4c37",
          "scriptpubkey_asm": "OP_PUSHNUM_1 OP_PUSHBYTES_32 9bf64e41fbfac00b07592a9fddf52b7d0b5a0aec360c3247c68359ea1cfa4c37",
          "scriptpubkey_type": "v1_p2tr",
          "scriptpubkey_address": "bc1pn0myus0mltqqkp6e920amaft05945zhvxcxry37xsdv75886fsmsyu67qe",
          "value": 443405
        },
        {
          "scriptpubkey": "51208ea56cf7a5d036b17128c6b96d05961f2fc53438ee900d93464a215cf2df062c",
          "scriptpubkey_asm": "OP_PUSHNUM_1 OP_PUSHBYTES_32 8ea56cf7a5d036b17128c6b96d05961f2fc53438ee900d93464a215cf2df062c",
          "scriptpubkey_type": "v1_p2tr",
          "scriptpubkey_address": "bc1p36jkeaa96qmtzufgc6uk6pvkruhu2dpca6gqmy6xfgs4euklqckqcjy2ke",
          "value": 1591812
        }
      ],
      "size": 205,
      "weight": 616,
      "fee": 14773,
      "status": {
        "confirmed": true,
        "block_height": 817974,
        "block_hash": "000000000000000000006fc88a9a6f7ef0e4b64143482076f3755faef3bfcbd5",
        "block_time": 1700669241
      }
    },
    ...
  ]
}

Tx Ids by Block Hash

Returns a list of all txids in the block.

The response from this endpoint can be cached indefinitely.

curl

curl https://mainnet.sandshrew.io/v1/<developer key> \
  -H 'Content-Type: application/json' \
  -d '{
    "jsonrpc": "2.0", 
    "id": 1, 
    "method": "esplora_block::txids",
    "params": [
      "000000000000000000006fc88a9a6f7ef0e4b64143482076f3755faef3bfcbd5"
    ]
}'

Params

block_hash: string (required) - Block hash

Response

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": [
    "ee8532635fd9a102a963075fff90d96d8ecfa9c8c6c15833cef40124dbc84a2c",
    "9416567cde33d0dbce1bc26b5be9bcb3aeaa604a98c31048afe0481392008e86",
    "da01426d48650d29a1c8ead7ea449bd829135aa160ef87089e1488f9fb6a4d8e",
    "c980c83f088aa697d3cb9157309d8eaf67d51147b71a205a197a2fb988d565f0",
    "514dda333fc63caff0c061a038204b1e50e27a2b5de72b28df1125afb06e02e8",
    "0a3e8e42fd2d8e504b589c01eeb5db188a09f0b7cd267eef798a830c0ba84862",
    "625726720bca257d458f2fd4f6686e1cbffafe7c02d26243df7d128f18cbaa02"
  ]
}

Tx Id by Block Index

Returns the transaction number at index <index> within the specified block.

The response from this endpoint can be cached indefinitely.

curl

curl https://mainnet.sandshrew.io/v1/<developer key> \
  -H 'Content-Type: application/json' \
  -d '{
    "jsonrpc": "2.0", 
    "id": 1, 
    "method": "esplora_block::txid",
    "params": [
      "000000000000000000006fc88a9a6f7ef0e4b64143482076f3755faef3bfcbd5",
      "3"
    ]
}'

Params

hash: string (required) - Block hash

index: string (optional) - Transaction index

Response

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": "c980c83f088aa697d3cb9157309d8eaf67d51147b71a205a197a2fb988d565f0"
}

Block Raw

Returns the raw block representation in binary.

The response from this endpoint can be cached indefinitely.

curl

curl https://mainnet.sandshrew.io/v1/<developer key> \
  -H 'Content-Type: application/json' \
  -d '{
    "jsonrpc": "2.0", 
    "id": 1, 
    "method": "esplora_block::raw",
    "params": [
      "000000000000000000006fc88a9a6f7ef0e4b64143482076f3755faef3bfcbd5"
    ]
}'

Params

block_hash: string (required) - Block hash

Response

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": "<raw binary>"
}

Block by Height

Returns the hash of the block currently at block_height.

curl

curl https://mainnet.sandshrew.io/v1/<developer key> \
  -H 'Content-Type: application/json' \
  -d '{
    "jsonrpc": "2.0", 
    "id": 1, 
    "method": "esplora_block-height",
    "params": [
      "817974"
    ]
}'

Params

block_height: string (required) - Block height

Response

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": "000000000000000000006fc88a9a6f7ef0e4b64143482076f3755faef3bfcbd5"
}

Get Blocks

Returns the 10 newest blocks starting at the tip or at start_height if specified.

curl

curl https://mainnet.sandshrew.io/v1/<developer key> \
  -H 'Content-Type: application/json' \
  -d '{
    "jsonrpc": "2.0", 
    "id": 1, 
    "method": "esplora_blocks",
    "params": [
      "817970"
    ]
}'

Params

start_height: string (required) - Block height

Response

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": [
    {
      "id": "000000000000000000001eef3949082854a9df683d6627b2c148a338b6cba185",
      "height": 817970,
      "version": 536928256,
      "timestamp": 1700666794,
      "tx_count": 4024,
      "size": 1742334,
      "weight": 3997632,
      "merkle_root": "f9ec5a87109af7b2072af32da7095bcc515d8332ce058e59129f245d1947dbb2",
      "previousblockhash": "00000000000000000003c846d14bde76ed58630801d126f08b8d867945bc35dd",
      "mediantime": 1700664178,
      "nonce": 34040615,
      "bits": 386161170,
      "difficulty": 64678587803496
    },
    {
      "id": "00000000000000000003c846d14bde76ed58630801d126f08b8d867945bc35dd",
      "height": 817969,
      "version": 777510912,
      "timestamp": 1700666768,
      "tx_count": 4835,
      "size": 1796150,
      "weight": 3993227,
      "merkle_root": "a651f03b6dc31184ce1a98c62ab378aa8a4243f0f3607265ebb90253a539e367",
      "previousblockhash": "000000000000000000043e5d74c30f40202c5aa9edd2b429f98ca5674c7036df",
      "mediantime": 1700663537,
      "nonce": 1265438336,
      "bits": 386161170,
      "difficulty": 64678587803496
    },
    {
      "id": "000000000000000000043e5d74c30f40202c5aa9edd2b429f98ca5674c7036df",
      "height": 817968,
      "version": 603979776,
      "timestamp": 1700666363,
      "tx_count": 4161,
      "size": 1645171,
      "weight": 3993592,
      "merkle_root": "3f2cc1e99296752dae7df8fa46b8e7a04436accf6f8ae5fae98e64099ffcd2b0",
      "previousblockhash": "00000000000000000001892e06206e660d5b5ebdd27321b19d960b8da0e4ebde",
      "mediantime": 1700663399,
      "nonce": 919130546,
      "bits": 386161170,
      "difficulty": 64678587803496
    },
    {
      "id": "00000000000000000001892e06206e660d5b5ebdd27321b19d960b8da0e4ebde",
      "height": 817967,
      "version": 681230336,
      "timestamp": 1700665953,
      "tx_count": 4258,
      "size": 1730618,
      "weight": 3993566,
      "merkle_root": "5c6f89f9381f39c63a0faf597a0cdb4c188470dd93554828fb15f3be5824a71a",
      "previousblockhash": "000000000000000000014faef29d21a22ad7e379a6746e46f0c430520209b081",
      "mediantime": 1700663267,
      "nonce": 3784256565,
      "bits": 386161170,
      "difficulty": 64678587803496
    },
    {
      "id": "000000000000000000014faef29d21a22ad7e379a6746e46f0c430520209b081",
      "height": 817966,
      "version": 661282816,
      "timestamp": 1700665264,
      "tx_count": 3686,
      "size": 1600946,
      "weight": 3997703,
      "merkle_root": "ea9589fba926113800ec8583f7a637c6a40d22b46e19e8da87de3ae5544d4757",
      "previousblockhash": "00000000000000000002e4a146c071db91d9cfc0555c4dfeaa38aa6c961f49dc",
      "mediantime": 1700663138,
      "nonce": 1045846569,
      "bits": 386161170,
      "difficulty": 64678587803496
    },
    {
      "id": "00000000000000000002e4a146c071db91d9cfc0555c4dfeaa38aa6c961f49dc",
      "height": 817965,
      "version": 536928256,
      "timestamp": 1700664178,
      "tx_count": 3623,
      "size": 1579863,
      "weight": 3997377,
      "merkle_root": "68c45a1de746e8b06e0a798a267eaa9afaad95cc96da964bba47b1dca7f07443",
      "previousblockhash": "0000000000000000000129051d90e404c3121db0c0b8b279fe07659b0e5049cc",
      "mediantime": 1700662875,
      "nonce": 2197622983,
      "bits": 386161170,
      "difficulty": 64678587803496
    },
    {
      "id": "0000000000000000000129051d90e404c3121db0c0b8b279fe07659b0e5049cc",
      "height": 817964,
      "version": 537034752,
      "timestamp": 1700663537,
      "tx_count": 5106,
      "size": 1881719,
      "weight": 3993044,
      "merkle_root": "0e4d450fafbf93a1ae97d2a6db99dae8090cbde7a0a67358a598aefb48f4eedc",
      "previousblockhash": "000000000000000000021735488c7af48086f46ab60af0c7e4dbe7fbcca8c524",
      "mediantime": 1700662760,
      "nonce": 2410092872,
      "bits": 386161170,
      "difficulty": 64678587803496
    },
    {
      "id": "000000000000000000021735488c7af48086f46ab60af0c7e4dbe7fbcca8c524",
      "height": 817963,
      "version": 553771008,
      "timestamp": 1700663399,
      "tx_count": 5407,
      "size": 1871817,
      "weight": 3993084,
      "merkle_root": "ed6df43fcdc28164b181d8a5e0563a60792454677ac2aed903194cdfcee5f74d",
      "previousblockhash": "00000000000000000000fafed3a6c88c410d52ad72aadba2a3289f3b33caf911",
      "mediantime": 1700662610,
      "nonce": 3585243226,
      "bits": 386161170,
      "difficulty": 64678587803496
    },
    {
      "id": "00000000000000000000fafed3a6c88c410d52ad72aadba2a3289f3b33caf911",
      "height": 817962,
      "version": 721895424,
      "timestamp": 1700663267,
      "tx_count": 5436,
      "size": 1848998,
      "weight": 3993593,
      "merkle_root": "74a47e21bc53db5f0032b0ded76a7fda4a373c4f323338d5a0eecf85dc3a684b",
      "previousblockhash": "000000000000000000044ebad84b2529cf8c0fa1b6edac838d6b4266e4dd8300",
      "mediantime": 1700661495,
      "nonce": 84794820,
      "bits": 386161170,
      "difficulty": 64678587803496
    },
    {
      "id": "000000000000000000044ebad84b2529cf8c0fa1b6edac838d6b4266e4dd8300",
      "height": 817961,
      "version": 841957376,
      "timestamp": 1700663138,
      "tx_count": 4534,
      "size": 1752734,
      "weight": 3993044,
      "merkle_root": "afadcebc3d8313c4af074efa17fdeb100a2095e01cb3148fcd8fd6d270d629a2",
      "previousblockhash": "000000000000000000033d19e7cacbc0ea0901934f9d41067f59cb0d79939f59",
      "mediantime": 1700661115,
      "nonce": 1425020306,
      "bits": 386161170,
      "difficulty": 64678587803496
    }
  ]
}

Block Tip Height

Returns the height of the last block.

curl

curl https://mainnet.sandshrew.io/v1/<developer key> \
  -H 'Content-Type: application/json' \
  -d '{
    "jsonrpc": "2.0", 
    "id": 1, 
    "method": "esplora_blocks:tip:height",
    "params": []
}'

Params

None

Response

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": 817988
}

Block Tip Hash

Returns the hash of the last block.

curl

curl https://mainnet.sandshrew.io/v1/<developer key> \
  -H 'Content-Type: application/json' \
  -d '{
    "jsonrpc": "2.0", 
    "id": 1, 
    "method": "esplora_blocks:tip:hash",
    "params": []
}'

Params

None

Response

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": "00000000000000000002738dc6915fbc6757dbed33a0faca0aa6402e2e6a3355"
}

Mempool

Mempool Stats

Get mempool backlog statistics. Returns an object with:

• count: the number of transactions in the mempool

• vsize: the total size of mempool transactions in virtual bytes

• total_fee: the total fee paid by mempool transactions in satoshis

• fee_histogram: mempool fee-rate distribution histogram

  An array of (feerate, vsize) tuples, where each entry's vsize is the total vsize of transactions paying more than feerate but less than the previous entry's feerate (except for the first entry, which has no upper bound). This matches the format used by the Electrum RPC protocol for mempool.get_fee_histogram.

curl

curl https://mainnet.sandshrew.io/v1/<developer key> \
  -H 'Content-Type: application/json' \
  -d '{
    "jsonrpc": "2.0", 
    "id": 1, 
    "method": "esplora_mempool",
    "params": []
}'

Params

None

Response

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "count": 29236,
    "vsize": 13878067,
    "total_fee": 487586136,
    "fee_histogram": [[53.01, 102131], [38.56, 110990], [34.12, 138976], [24.34, 112619], [3.16, 246346], [2.92, 239701], [1.1, 775272]]
  }
}

In this example, there are transactions weighting a total of 102,131 vbytes that are paying more than 53 sat/vB, 110,990 vbytes of transactions paying between 38 and 53 sat/vB, 138,976 vbytes paying between 34 and 38, etc.

Mempool Tx IDs

Get the full list of txids in the mempool as an array.

The order of the txids is arbitrary and does not match bitcoind's.

curl

curl https://mainnet.sandshrew.io/v1/<developer key> \
  -H 'Content-Type: application/json' \
  -d '{
    "jsonrpc": "2.0", 
    "id": 1, 
    "method": "esplora_mempool:txids",
    "params": []
}'

Params

None

Response

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": [
    "25d04ab1d202ec1835d47779557d2a63af59431a436fdbf1a7c1e8e39f93dfbf",
    "b8e223f537d026a26b77e5b4a10701d684fe66bca578ba3783125f1ece27eb8c",
    "0bb83d3f849f80a0b3111d93ee20bef4a6180d101ed46649c95ce791b6efcf84",
    "26e4bd9816ed4bd1e38368a07092f4e2fddc88d46baa0c534b2b61ea4de903b4"
  ]
}

Mempool Recent Txs

Get a list of the last 10 transactions to enter the mempool.

Each transaction object contains simplified overview data, with the following fields: txid, fee, vsize and value

curl

curl https://mainnet.sandshrew.io/v1/<developer key> \
  -H 'Content-Type: application/json' \
  -d '{
    "jsonrpc": "2.0", 
    "id": 1, 
    "method": "esplora_mempool:recent",
    "params": []
}'

Params

None

Response

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": [
    {
      "txid": "8d9ab9e6e55975ca1d106f56534175665987631db729aa78ac751f7ad373ffab",
      "fee": 98560,
      "vsize": 1118,
      "value": 17212160
    },
    {
      "txid": "c9dca4203c3f9c12c4cdd7577c1ad9198a98e7138866c880aac6211a9de66858",
      "fee": 9520,
      "vsize": 143,
      "value": 65426
    },
    {
      "txid": "e59823b30f2d23f33a6df519ef51ab25a9e529505c32caca70a5791c9643a52d",
      "fee": 21840,
      "vsize": 181,
      "value": 24000
    },
    {
      "txid": "6c4197d351586c5a4f2f4e1ff3b962db96f61c8456c7c36709640e1fd65e0c82",
      "fee": 16850,
      "vsize": 226,
      "value": 437850
    },
    {
      "txid": "e12c115b438d2af93440fcdc435334af1d1c4d362a3fb3874fe43e11f4a705c4",
      "fee": 18701,
      "vsize": 143,
      "value": 549600
    },
    {
      "txid": "653426670f82a60a2b34535ded191ff6f7b19d9148cacec66d740282feca081d",
      "fee": 81292,
      "vsize": 296,
      "value": 81882853
    },
    {
      "txid": "6b6e20cd2ac09ec8d62699cefe1f47ddc88f3ea00b9bb435d9292da9c3a4f390",
      "fee": 21304,
      "vsize": 141,
      "value": 2650154
    },
    {
      "txid": "0f3e825eb60f86c15d5f0ec1efbe155fce9dbde1a64c12a6e9ed52336c51ffde",
      "fee": 32225,
      "vsize": 140,
      "value": 29597400
    },
    {
      "txid": "1c74adcd1c6c46162b8b6b79d24d3df532f2b6f552ae9e496d741df54d173eba",
      "fee": 12939,
      "vsize": 110,
      "value": 272497
    },
    {
      "txid": "124b9f4fa5ea77b608511b6ddd125774744545dfcdd9cabe31c2b2dea2facd09",
      "fee": 18407,
      "vsize": 171,
      "value": 6650486
    }
  ]
}

Fees

Fee Estimates

Get an object where the key is the confirmation target (in number of blocks) and the value is the estimated fee rate (in sat/vB).

The available confirmation targets are 1-25, 144, 504 and 1008 blocks.

curl

curl https://mainnet.sandshrew.io/v1/<developer key> \
  -H 'Content-Type: application/json' \
  -d '{
    "jsonrpc": "2.0", 
    "id": 1, 
    "method": "esplora_fee-estimates",
    "params": []
}'

Params

None

Response

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "1": 230.824,
    "2": 230.824,
    "3": 230.824,
    "4": 230.824,
    "5": 230.824,
    "6": 230.824,
    "7": 230.824,
    "8": 230.824,
    "9": 230.824,
    "10": 230.824,
    "11": 230.824,
    "12": 230.824,
    "13": 199.236,
    "14": 199.236,
    "15": 199.236,
    "16": 199.236,
    "17": 199.236,
    "18": 199.236,
    "19": 199.236,
    "20": 199.236,
    "21": 199.236,
    "22": 199.236,
    "23": 199.236,
    "24": 199.236,
    "25": 134.818,
    "144": 55.785000000000004,
    "504": 50.757000000000005,
    "1008": 50.757000000000005
  }
}