TxInput
A single Bitcoin transaction input.
CryptocurrencyBitcoinBlockchain DataExchangeMarket DataTradingPaymentsPublic APIs
Properties
| Name |
Type |
Description |
| sequence |
integer |
Sequence number. |
| witness |
string |
SegWit witness data. |
| script |
string |
Input script (scriptSig) as hex. |
| prev_out |
object |
A single Bitcoin transaction output (a UTXO before it is spent). |
JSON Schema
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"$id": "https://raw.githubusercontent.com/api-evangelist/blockchain/refs/heads/main/json-schema/data-api-tx-input-schema.json",
"title": "TxInput",
"description": "A single Bitcoin transaction input.",
"type": "object",
"properties": {
"sequence": {
"type": "integer",
"format": "int64",
"description": "Sequence number.",
"example": 1
},
"witness": {
"type": "string",
"description": "SegWit witness data."
},
"script": {
"type": "string",
"description": "Input script (scriptSig) as hex."
},
"prev_out": {
"type": "object",
"description": "A single Bitcoin transaction output (a UTXO before it is spent).",
"properties": {
"type": {
"type": "integer",
"description": "Output type indicator.",
"example": 1
},
"spent": {
"type": "boolean",
"description": "True if the output has been spent.",
"example": true
},
"value": {
"type": "integer",
"format": "int64",
"description": "Value in Satoshi.",
"example": 100000
},
"spending_outpoints": {
"type": "array",
"description": "Outpoints that spent this output (when spent).",
"items": {
"type": "object",
"properties": {
"tx_index": {
"type": "integer",
"format": "int64"
},
"n": {
"type": "integer"
}
}
}
},
"n": {
"type": "integer",
"description": "Output index within the transaction.",
"example": 1
},
"tx_index": {
"type": "integer",
"format": "int64",
"description": "Internal transaction index.",
"example": 1
},
"script": {
"type": "string",
"description": "Output script (scriptPubKey) as hex."
},
"addr": {
"type": "string",
"description": "Destination address (when derivable)."
}
}
}
}
}
Every JSON Schema here is available over the APIs.io API and to AI agents over MCP.
MCP server
One button, every client — Claude, Cursor, VS Code and the rest.
https://apis.io/mcp
Tools for schemas
4 MCP tools reach this
find_json_schemasBrowse and filter every JSON Schema in the catalog.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.
All 92 tools
Call it yourself
curl for this page
This JSON Schema
curl "https://apis.io/api/v1/json-schemas/data-api-tx-input"
All schemas
curl "https://apis.io/api/v1/json-schemas?limit=25"
Discovery needs no key. Ratings and market analysis are Pro.
Get an API key
Free tier, no email required.
A second provider on the same verified email joins the account you already have.