(Un)Spent Transaction Outputs

These endpoints cover spent and unspent transaction outputs.

Get Unspent UTXOs by Address

This endpoint retrieves a combined, ordered list of both confirmed and unconfirmed UTXOs for a given address. Returns up to 100k unconfirmed results in one request. Confirmed results are paginated if more than 1000 are available. The rest can be accessed using the provided next-page token.

HTTP Request
GET https://api.whatsonchain.com/v1/bsv/<network>/address/<address>/unspent/all
cURL
curl --location --request GET "https://api.whatsonchain.com/v1/bsv/main/address/1L2F8wYxTRagCZLnsm2engg8ngGECSeuE5/unspent/all"
Response JSON structure
{
    "address": "1L2F8wYxTRagCZLnsm2engg8ngGECSeuE5",
    "script": "b3005d46af31c4b5675b73c17579b7bd366dfe10635b7b43ac111aea5226efb6",
    "result": [
                {
                    "tx_pos": 1,
                    "tx_hash": "9c3801270d353066ed0553efb243bccc296d16e8ba589797934717c3f1ac030d",
                    "value": 98,
                    "isSpentInMempoolTx": false,
                    "hex": "76a914d0a69b53d9a1e229b51a60cc24814f8750b7446188ac",
                    "status": "unconfirmed"
                },
                ...
                {
                    "height": 861936,
                    "tx_pos": 0,
                    "tx_hash": "46b080bf212f3b355cffe7956db3adb53840ac550e51110577317df030039d7f",
                    "value": 100,
                    "isSpentInMempoolTx": true,
                    "status": "confirmed"
                }
            ],
    "error": ""
}

URL Parameters

Get Unconfirmed UTXOs by Address

This endpoint retrieves an ordered list of unconfirmed UTXOs for a given address. Returns up to 100k results in one request.

HTTP Request
GET https://api.whatsonchain.com/v1/bsv/<network>/address/<address>/unconfirmed/unspent
cURL
curl --location --request GET "https://api.whatsonchain.com/v1/bsv/main/address/1Dbj1LUxTqtuZ1U52KZiZChLPHkTAMiD6h/unconfirmed/unspent"
Response JSON structure
{
    "result": [
        {
            "tx_pos": 1,
            "tx_hash": "93d8ae93a9e074c555d80e86c130b6cd4d5c7efa2795f91b2aea285c546512c6",
            "value": 181724,
            "hex": "76a9148a32b77e8f9bce47179fe03b6894e3d37003099888ac"
        }
    ]
}

URL Parameters

Bulk Unconfirmed UTXOs by Address

This endpoint retrieves an ordered list of unconfirmed UTXOs for a given set of addresses - max 20 addresses per request. Returns up to 100 items in one request.

HTTP Request
GET https://api.whatsonchain.com/v1/bsv/<network>/addresses/unconfirmed/unspent
cURL
curl --location --request POST "https://api.whatsonchain.com/v1/bsv/main/addresses/unconfirmed/unspent" \
  --header "Content-Type: application/json" \
  --data "{\"addresses\" : [\"16ZBEb7pp6mx5EAGrdeKivztd5eRJFuvYP\",\"1KGHhLTQaPr4LErrvbAuGE62yPpDoRwrob\" ] }"
Request body JSON structure
{
    "addresses": 
    [
    	"16ZBEb7pp6mx5EAGrdeKivztd5eRJFuvYP",
    	"1KGHhLTQaPr4LErrvbAuGE62yPpDoRwrob"
    ]
}
Response JSON structure
[
    {
        "address": "16ZBEb7pp6mx5EAGrdeKivztd5eRJFuvYP",
        "unspent": [
            {
                "height": 657540,
                "tx_pos": 1,
                "tx_hash": "d75485c2329a533fd06b5f55a3f21644741c0258f2974d5d989e946a0bb4357f",
                "value": 25000000
            },
            {
                "height": 657542,
                "tx_pos": 1,
                "tx_hash": "55a656d50327ec3237fa6e821ab62294695cfd508d631dc9b04dc3a395cf0a37",
                "value": 25000000
            }
        ],
        "error": ""
    },
    {
        "address": "1KGHhLTQaPr4LErrvbAuGE62yPpDoRwrob",
        "unspent": [
                {
                "height": 658133,
                "tx_pos": 1,
                "tx_hash": "7ae43aac97396bc99616d8273c6cd9b57f017d6d49aca742fbc8c214fee49fa7",
                "value": 25000000
            },
            {
                "height": 658134,
                "tx_pos": 1,
                "tx_hash": "5b25a56bbb959f9cf4b3e48dbbe412bf5cc85e655d27f87c3bfb07aa6aa01518",
                "value": 25000000
            }
        ],
        "error": ""
    }
]

URL Parameters

Get Confirmed UTXOs by Address

This endpoint retrieves an ordered list of confirmed UTXOs for a given address. Pagination is available using the provided next-page token.

The "isSpentInMempoolTx" flag enables filtering of spent unconfirmed transactions from this set.

HTTP Request
GET https://api.whatsonchain.com/v1/bsv/<network>/address/<address>/confirmed/unspent
cURL
curl --location --request GET "https://api.whatsonchain.com/v1/bsv/main/address/1Dbj1LUxTqtuZ1U52KZiZChLPHkTAMiD6h/confirmed/unspent"
Response JSON structure
{
    "result": [
        {
            "height": 797518,
            "tx_pos": 0,
            "tx_hash": "6cc9631ef3dad77eb0141134167f20469d0b4e61405de57fe6a9ac71b943bb9f",
            "value": 181827,
            "isSpentInMempoolTx": false
        }
    ]
}

URL Parameters

Bulk Confirmed UTXOs by Address

This endpoint retrieves an ordered list of confirmed UTXOs for a given set of addresses - max 20 addresses per request. Returns up to 20 items in one request.

HTTP Request
GET https://api.whatsonchain.com/v1/bsv/<network>/addresses/confirmed/unspent
cURL
curl --location --request POST "https://api.whatsonchain.com/v1/bsv/main/addresses/
confirmed/unspent" \
  --header "Content-Type: application/json" \
  --data "{\"addresses\" : [\"16ZBEb7pp6mx5EAGrdeKivztd5eRJFuvYP\",\"1KGHhLTQaPr4LErrvbAuGE62yPpDoRwrob\" ] }"
Request body JSON structure
{
    "addresses": 
    [
    	"16ZBEb7pp6mx5EAGrdeKivztd5eRJFuvYP",
    	"1KGHhLTQaPr4LErrvbAuGE62yPpDoRwrob"
    ]
}
Response JSON structure
[
    {
        "address": "16ZBEb7pp6mx5EAGrdeKivztd5eRJFuvYP",
        "unspent": [
            {
                "height": 657540,
                "tx_pos": 1,
                "tx_hash": "d75485c2329a533fd06b5f55a3f21644741c0258f2974d5d989e946a0bb4357f",
                "value": 25000000
            },
            {
                "height": 657542,
                "tx_pos": 1,
                "tx_hash": "55a656d50327ec3237fa6e821ab62294695cfd508d631dc9b04dc3a395cf0a37",
                "value": 25000000
            }
        ],
        "error": ""
    },
    {
        "address": "1KGHhLTQaPr4LErrvbAuGE62yPpDoRwrob",
        "unspent": [
                {
                "height": 658133,
                "tx_pos": 1,
                "tx_hash": "7ae43aac97396bc99616d8273c6cd9b57f017d6d49aca742fbc8c214fee49fa7",
                "value": 25000000
            },
            {
                "height": 658134,
                "tx_pos": 1,
                "tx_hash": "5b25a56bbb959f9cf4b3e48dbbe412bf5cc85e655d27f87c3bfb07aa6aa01518",
                "value": 25000000
            }
        ],
        "error": ""
    }
]

URL Parameters

(Deprecated) Get UTXOs by Address

This endpoint is powered by ElectrumX and is planned for deprecation in the near future.

This endpoint retrieves an ordered list of UTXOs for a given address.

HTTP Request
GET https://api.whatsonchain.com/v1/bsv/<network>/address/<address>/unspent
cURL
curl --location --request GET "https://api.whatsonchain.com/v1/bsv/main/address/1GJ3x5bcEnKMnzNFPPELDfXUCwKEaLHM5H/unspent"

Returns a response as long as the response message is less than 1MB in size.

Response JSON structure
[
    {
        "height": 578325,
        "tx_pos": 0,
        "tx_hash": "62824e3af3d01113e9bce8b73576b833990d231357bd718385958c21d50bbddd",
        "value": 1250020815
    },
    {
        "height": 578326,
        "tx_pos": 0,
        "tx_hash": "4b008a10eebcf70f384442e4e3147bc76c6e4f764b516b208e148d700b965deb",
        "value": 1251827826
    },
    ...
]

URL Parameters

(Deprecated) Bulk UTXOs by Address

This endpoint is powered by ElectrumX and is planned for deprecation in the near future.

This endpoint retrieves a list of UTXOs for multiple addresses in a single request.

  • Max 20 addresses per request.

HTTP Request
POST https://api.whatsonchain.com/v1/bsv/<network>/addresses/unspent
cURL
curl --location --request POST "https://api.whatsonchain.com/v1/bsv/main/addresses/unspent" \
  --header "Content-Type: application/json" \
  --data "{\"addresses\" : [\"16ZBEb7pp6mx5EAGrdeKivztd5eRJFuvYP\",\"1KGHhLTQaPr4LErrvbAuGE62yPpDoRwrob\" ] }"

The JSON structure for the above post request:

JSON structure
{
    "addresses": 
    [
    	"16ZBEb7pp6mx5EAGrdeKivztd5eRJFuvYP",
    	"1KGHhLTQaPr4LErrvbAuGE62yPpDoRwrob"
    ]
}
Response JSON structure
[
    {
        "address": "16ZBEb7pp6mx5EAGrdeKivztd5eRJFuvYP",
        "unspent": [
            {
                "height": 657540,
                "tx_pos": 1,
                "tx_hash": "d75485c2329a533fd06b5f55a3f21644741c0258f2974d5d989e946a0bb4357f",
                "value": 25000000
            },
            {
                "height": 657542,
                "tx_pos": 1,
                "tx_hash": "55a656d50327ec3237fa6e821ab62294695cfd508d631dc9b04dc3a395cf0a37",
                "value": 25000000
            }
        ],
        "error": ""
    },
    {
        "address": "1KGHhLTQaPr4LErrvbAuGE62yPpDoRwrob",
        "unspent": [
                {
                "height": 658133,
                "tx_pos": 1,
                "tx_hash": "7ae43aac97396bc99616d8273c6cd9b57f017d6d49aca742fbc8c214fee49fa7",
                "value": 25000000
            },
            {
                "height": 658134,
                "tx_pos": 1,
                "tx_hash": "5b25a56bbb959f9cf4b3e48dbbe412bf5cc85e655d27f87c3bfb07aa6aa01518",
                "value": 25000000
            }
        ],
        "error": ""
    }
]

URL Parameters

Get Unspent UTXOs by Script

This endpoint retrieves a combined, ordered list of both confirmed and unconfirmed UTXOs for a given script. Returns up to 100k unconfirmed results in one request. Confirmed results are paginated if more than 1000 are available. The rest can be accessed using the provided next-page token.

HTTP Request
GET https://api.whatsonchain.com/v1/bsv/<network>/script/<scriptHash>/unspent/all
cURL
curl --location --request GET "https://api.whatsonchain.com/v1/bsv/main/script/b3005d46af31c4b5675b73c17579b7bd366dfe10635b7b43ac111aea5226efb6/unspent/all"
Response JSON structure
{
    "script": "b3005d46af31c4b5675b73c17579b7bd366dfe10635b7b43ac111aea5226efb6",
    "result": [
                {
                    "tx_pos": 1,
                    "tx_hash": "9c3801270d353066ed0553efb243bccc296d16e8ba589797934717c3f1ac030d",
                    "value": 98,
                    "isSpentInMempoolTx": false,
                    "hex": "76a914d0a69b53d9a1e229b51a60cc24814f8750b7446188ac",
                    "status": "unconfirmed"
                },
                ...
                {
                    "height": 861936,
                    "tx_pos": 0,
                    "tx_hash": "46b080bf212f3b355cffe7956db3adb53840ac550e51110577317df030039d7f",
                    "value": 100,
                    "isSpentInMempoolTx": true,
                    "status": "confirmed"
                }
            ],
    "error": ""
}

URL Parameters

Get Unconfirmed UTXOs by Script

This endpoint retrieves the ordered list of unconfirmed UTXOs for a given script. Returns up to 100k results in one request.

HTTP Request
GET https://api.whatsonchain.com/v1/bsv/<network>/script/<scriptHash>/unconfirmed/unspent
cURL
curl --location --request GET "https://api.whatsonchain.com/v1/bsv/main/script/0374d9ee2df8e5d7c5fd8359f33456996f2a1a9c76d9c783d2f8d5ee05ba5832/unconfirmed/unspent"
Response JSON structure
{
    "result": [
        {
            "tx_pos": 1,
            "tx_hash": "93d8ae93a9e074c555d80e86c130b6cd4d5c7efa2795f91b2aea285c546512c6",
            "value": 181724,
            "hex": "76a9148a32b77e8f9bce47179fe03b6894e3d37003099888ac"
        }
    ]
}

URL Parameters

Bulk Unconfirmed UTXOs by Script

This endpoint retrieves an ordered list of unconfirmed UTXOs for a given set of scripthashes - max 20 scripthashes per request. Returns up to 20 items in one request.

HTTP Request
GET https://api.whatsonchain.com/v1/bsv/<network>/scripts/unconfirmed/unspent
cURL
curl --location --request POST "https://api.whatsonchain.com/v1/bsv/main/scripts/unconfirmed/unspent" \
  --header "Content-Type: application/json" \
  --data "{\"scripts\" : [\"f814a7c3a40164aacc440871e8b7b14eb6a45f0ca7dcbeaea709edc83274c5e7\",\"995ea8d0f752f41cdd99bb9d54cb004709e04c7dc4088bcbbbb9ea5c390a43c3\" ] }"
Request body JSON structure
{
    "scripts": [
        "f814a7c3a40164aacc440871e8b7b14eb6a45f0ca7dcbeaea709edc83274c5e7",
        "995ea8d0f752f41cdd99bb9d54cb004709e04c7dc4088bcbbbb9ea5c390a43c3"
    ]
}
Response JSON structure
[
    {
        "script": "f814a7c3a40164aacc440871e8b7b14eb6a45f0ca7dcbeaea709edc83274c5e7",
        "unspent": [
            {
                "height": 620539,
                "tx_pos": 0,
                "tx_hash": "4ec3b63d764558303eda720e8e51f69bbcfe81376075657313fb587306f8a9b0",
                "value": 450000
            }
        ],
        "error": ""
    },
    {
        "script": "995ea8d0f752f41cdd99bb9d54cb004709e04c7dc4088bcbbbb9ea5c390a43c3",
        "unspent": [],
        "error": ""
    }
]

URL Parameters

Get Confirmed UTXOs by Script

This endpoint retrieves the ordered list of confirmed UTXOs for a given script. Pagination is available using the provided next-page token.

The "isSpentInMempoolTx" flag enables filtering of spent unconfirmed transactions from this set.

HTTP Request
GET https://api.whatsonchain.com/v1/bsv/<network>/script/<scriptHash>/confirmed/unspent
cURL
curl --location --request GET "https://api.whatsonchain.com/v1/bsv/main/script/0374d9ee2df8e5d7c5fd8359f33456996f2a1a9c76d9c783d2f8d5ee05ba5832/confirmed/unspent"
Response JSON structure
{
    "result": [
        {
            "height": 797518,
            "tx_pos": 0,
            "tx_hash": "6cc9631ef3dad77eb0141134167f20469d0b4e61405de57fe6a9ac71b943bb9f",
            "value": 181827,
            "isSpentInMempoolTx": false
        }
    ]
}

URL Parameters

Bulk Confirmed UTXOs by Script

This endpoint retrieves an ordered list of confirmed UTXOs for a given set of scripthashes - max 20 scripthashes per request. Returns up to 20 items in one request.

HTTP Request
GET https://api.whatsonchain.com/v1/bsv/<network>/scripts/confirmed/unspent
cURL
curl --location --request POST "https://api.whatsonchain.com/v1/bsv/main/scripts/confirmed/unspent" \
  --header "Content-Type: application/json" \
  --data "{\"scripts\" : [\"f814a7c3a40164aacc440871e8b7b14eb6a45f0ca7dcbeaea709edc83274c5e7\",\"995ea8d0f752f41cdd99bb9d54cb004709e04c7dc4088bcbbbb9ea5c390a43c3\" ] }"
Request body JSON structure
{
    "scripts": [
        "f814a7c3a40164aacc440871e8b7b14eb6a45f0ca7dcbeaea709edc83274c5e7",
        "995ea8d0f752f41cdd99bb9d54cb004709e04c7dc4088bcbbbb9ea5c390a43c3"
    ]
}
Response JSON structure
[
    {
        "script": "f814a7c3a40164aacc440871e8b7b14eb6a45f0ca7dcbeaea709edc83274c5e7",
        "unspent": [
            {
                "height": 620539,
                "tx_pos": 0,
                "tx_hash": "4ec3b63d764558303eda720e8e51f69bbcfe81376075657313fb587306f8a9b0",
                "value": 450000
            }
        ],
        "error": ""
    },
    {
        "script": "995ea8d0f752f41cdd99bb9d54cb004709e04c7dc4088bcbbbb9ea5c390a43c3",
        "unspent": [],
        "error": ""
    }
]

URL Parameters

(Deprecated) Get UTXOs by Script

This endpoint is powered by ElectrumX and is planned for deprecation in the near future.

This endpoint retrieves the ordered list of UTXOs for a given script.

HTTP Request
GET https://api.whatsonchain.com/v1/bsv/<network>/script/<scriptHash>/unspent
cURL
curl --location --request GET "https://api.whatsonchain.com/v1/bsv/main/script/995ea8d0f752f41cdd99bb9d54cb004709e04c7dc4088bcbbbb9ea5c390a43c3/unspent"

Returns a response as long as the response message is less than 1MB in size.

Response JSON structure
[
    {
        "height": 578325,
        "tx_pos": 0,
        "tx_hash": "62824e3af3d01113e9bce8b73576b833990d231357bd718385958c21d50bbddd",
        "value": 1250020815
    },
    {
        "height": 578326,
        "tx_pos": 0,
        "tx_hash": "4b008a10eebcf70f384442e4e3147bc76c6e4f764b516b208e148d700b965deb",
        "value": 1251827826
    },
    ...
]    

URL Parameters

(Deprecated) Bulk UTXOs by Script

This endpoint is powered by ElectrumX and is planned for deprecation in the near future.

This endpoint retrieves a list of UTXOs for multiple scripts in a single request.

  • Max 20 scripts per request.

HTTP Request
POST https://api.whatsonchain.com/v1/bsv/<network>/scripts/unspent
cURL
curl --location --request POST "https://api.whatsonchain.com/v1/bsv/main/scripts/unspent" \
  --header "Content-Type: application/json" \
  --data "{\"scripts\" : [\"f814a7c3a40164aacc440871e8b7b14eb6a45f0ca7dcbeaea709edc83274c5e7\",\"995ea8d0f752f41cdd99bb9d54cb004709e04c7dc4088bcbbbb9ea5c390a43c3\" ] }"

The JSON structure for the above post request:

JSON structure
{
    "scripts": [
        "f814a7c3a40164aacc440871e8b7b14eb6a45f0ca7dcbeaea709edc83274c5e7",
        "995ea8d0f752f41cdd99bb9d54cb004709e04c7dc4088bcbbbb9ea5c390a43c3"
    ]
}
Response JSON structure
[
    {
        "script": "f814a7c3a40164aacc440871e8b7b14eb6a45f0ca7dcbeaea709edc83274c5e7",
        "unspent": [
            {
                "height": 620539,
                "tx_pos": 0,
                "tx_hash": "4ec3b63d764558303eda720e8e51f69bbcfe81376075657313fb587306f8a9b0",
                "value": 450000
            }
        ],
        "error": ""
    },
    {
        "script": "995ea8d0f752f41cdd99bb9d54cb004709e04c7dc4088bcbbbb9ea5c390a43c3",
        "unspent": [],
        "error": ""
    }
]

URL Parameters

Get Unconfirmed Spent Tx Output

This endpoint retrieves where the specified unconfirmed transaction output was spent.

HTTP Request
GET https://api.whatsonchain.com/v1/bsv/<network>/tx/<txid>/<voutIndex>/unconfirmed/spent
cURL
curl --location --request GET "https://api.whatsonchain.com/v1/bsv/main/tx/d2d9231b0d3cc19f1b9cfe798b8e68eaf8db3cd803128779c8aabaaea9cba4ea/1/unconfirmed/spent"
Response JSON structure
{
    "txid": "b905857a36586e68b8186be1e7b1ac56de196f5257536f019d7071cbdb0608a7",
    "vin": 0
}

URL Parameters

Get Confirmed Spent Tx Output

This endpoint retrieves where the specified confirmed transaction output was spent.

HTTP Request
GET https://api.whatsonchain.com/v1/bsv/<network>/tx/<txid>/<voutIndex>/confirmed/spent
cURL
curl --location --request GET "https://api.whatsonchain.com/v1/bsv/main/tx/17d533c6a215223a62eef389707f77bef1601a18e4e994805a7846c3f3d50870/2/confirmed/spent"
Response JSON structure
{
    "txid": "87645a7c4a9a5a9b9cd1468db19cdba44129c35cc487fc57c4d8843141ad2551",
    "vin": 2
}

URL Parameters

Get Spent Transaction Output

This endpoint retrieves where the specified transaction output was spent, checking both confirmed and unconfirmed in a single call.

HTTP Request
GET https://api.whatsonchain.com/v1/bsv/<network>/tx/<txid>/<voutIndex>/spent
cURL
curl --location --request GET "https://api.whatsonchain.com/v1/bsv/main/tx/17d533c6a215223a62eef389707f77bef1601a18e4e994805a7846c3f3d50870/2/spent"
Response JSON structure
{
    "txid": "87645a7c4a9a5a9b9cd1468db19cdba44129c35cc487fc57c4d8843141ad2551",
    "vin": 2
}

URL Parameters

Errors

Bulk Spent Transaction Outputs

This endpoint retrieves where the specified transaction outputs were spent, checking both confirmed and unconfirmed in a single call.

  • Max 20 transaction outputs per request.

HTTP Request
POST https://api.whatsonchain.com/v1/bsv/<network>/utxos/spent
cURL
curl --location --request POST "https://api.whatsonchain.com/v1/bsv/main/utxos/spent" \
  --header "Content-Type: application/json" \
  --data "{\"utxos\" :[{ \"txid\" :\"87645a7c4a9a5a9b9cd1468db19cdba44129c35cc487fc57c4d8843141ad2551\", \"vout\" : 2}, {\"txid\" :\"e05de19075bc8205d702036a53d3e21ff6a2964f1e9941b913921e1e83d82c91\", \"vout\" : 0}]}"
Request body JSON structure
{
    "utxos":
    [
        {
        "txid": "87645a7c4a9a5a9b9cd1468db19cdba44129c35cc487fc57c4d8843141ad2551",
        "vout": 2
        },
        {
        "txid": "e05de19075bc8205d702036a53d3e21ff6a2964f1e9941b913921e1e83d82c91",
        "vout": 0
        }
    ]
}
Response JSON structure
[
    {
        "utxo": {
            "txid": "87645a7c4a9a5a9b9cd1468db19cdba44129c35cc487fc57c4d8843141ad2551",
            "vout": 2
        },
        "spentIn": {
            "txid": "88d8ce011179fac0dc466a1c5fcb734a91b076d15354aee4f7186ea3f5921533",
            "vin": 93,
            "status": "confirmed"
        },
        "error": ""
    },
    {
        "utxo": {
            "txid": "e05de19075bc8205d702036a53d3e21ff6a2964f1e9941b913921e1e83d82c91",
            "vout": 0
        },
        "spentIn": {
            "txid": "81f4ffcdc8ac15a9f360196f95f8e4e32c2e2c4fb78fdca64e52856820d3ed3d",
            "vin": 0,
            "status": "unconfirmed"
        },
        "error": ""
    }
]

URL Parameters

Errors

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