---
updatedAt: 2026-05-20T16:42:01.000Z
---
Fetch the complete documentation index at: https://docs.blockdaemon.com/llms.txt. Use this file to discover all available pages before exploring further. Append .md to any documentation page URL to get its markdown version.
# Verify a Transaction
Verifies whether a signed/unsigned transaction matches the expected input parameters.
### **Compute Unit Value**: `10` (fixed)
***
> 👍 START HERE!
>
> Click **Try It!** to test the endpoint with the default values or customize your request by following these steps:
>
> 1. Enter your API key in the **Header: token** text box (top right).
> * You can **[get a free API key here](https://docs.blockdaemon.com/docs/quick-start-blockdaemon-api-suite)** .
> 2. Enter the parameters available below.
> 3. Click **Try It!**.
***
{`
Supported Protocols & Networks
`}
# OpenAPI definition
```json
{
"openapi": "3.0.3",
"info": {
"title": "Transaction API",
"version": "1.0.0",
"description": "Blockdaemon transaction API to create, compile, send and verify transactions for supported blockchains.",
"contact": {
"name": "Blockdaemon",
"email": "info@blockdaemon.com",
"url": "https://blockdaemon.com"
},
"x-logo": {
"url": "https://storage.googleapis.com/blockdaemon-app-static-images/marketing/PNG/dark-logo.png",
"altText": "Blockdaemon logo"
}
},
"servers": [
{
"url": "https://svc.blockdaemon.com/tx/v1",
"description": "Blockdaemon transaction API"
}
],
"security": [
{
"apiKeyAuthHeader": []
},
{
"bearerAuth": []
}
],
"paths": {
"/{blockchain_id}/verify": {
"parameters": [
{
"$ref": "#/components/parameters/blockchain_id"
}
],
"post": {
"summary": "Verify a Transaction",
"description": "Verifies whether a signed/unsigned transaction matches the expected input parameters.",
"operationId": "TxVerify",
"requestBody": {
"required": true,
"content": {
"application/json": {
"schema": {
"$ref": "#/components/schemas/ApiTxVerifyRequest"
},
"examples": {
"btc_with_errors": {
"summary": "Bitcoin mainnet intent verification with errors",
"value": {
"raw_encoded_tx": "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",
"tx": {
"from": [
{
"index": 1,
"tx_id": "0db756f7b889a5bfa6f2af44f267b60f989c712e49a882ac5768df92e9244687"
}
],
"to": [
{
"value": 527560000,
"destination": "bc1qgcgc5f0f5fth60ycqh6ufdehdds39cc3rajs5j"
}
]
}
}
}
}
}
}
},
"responses": {
"200": {
"description": "Request successful"
},
"400": {
"description": "Bad Request",
"content": {
"application/json": {
"schema": {
"$ref": "#/components/schemas/error"
},
"examples": {
"generic": {
"value": {
"type": "bad-request",
"code": 16396,
"title": "Bad Request",
"status": 400,
"detail": "the provided input does not match the transaction"
}
},
"btc_with_errors": {
"summary": "Bitcoin mainnet intent verification with errors",
"value": {
"type": "bad-request",
"code": 16388,
"title": "Bad Request",
"status": 400,
"detail": "tx hash '4a5fd6d85ccb73bc7e5dd429b4c6a6cc13e472408fc264466f38a6d660057884' input at index 0 does not match expected hash '0db756f7b889a5bfa6f2af44f267b60f989c712e49a882ac5768df92e9244687'; tx output index 12 of input at index 0 does not match expected index 1; address 'bc1qskxv4jnvfeyz7c5lm0x92w0xjhvxw04zpzg6gn' of tx output at index 0 does not match expected address 'bc1qgcgc5f0f5fth60ycqh6ufdehdds39cc3rajs5j'; amount of 294 sats of tx output at index 0 does not match expected amount of 527560000 sats"
}
}
}
}
}
},
"401": {
"$ref": "#/components/responses/ErrorUnauthorized"
},
"429": {
"$ref": "#/components/responses/ErrorTooManyRequests"
},
"500": {
"$ref": "#/components/responses/ErrorInternal"
},
"501": {
"$ref": "#/components/responses/ErrorNotImplemented"
},
"503": {
"$ref": "#/components/responses/ErrorServiceUnavailable"
}
}
}
}
},
"components": {
"securitySchemes": {
"apiKeyAuthHeader": {
"type": "apiKey",
"in": "header",
"name": "X-API-Key",
"description": "Unlock higher TPS - Create your own API key in the [Blockdaemon App](https://app.blockdaemon.com).\n",
"x-default": "2go1YqUcuAr4WZ2-3WgSD3c7qpatZqQuNWhTVBldKZnTSUtw"
},
"bearerAuth": {
"type": "http",
"scheme": "bearer",
"bearerFormat": "Opaque",
"description": "[Legacy Auth] Unlock higher TPS - Create your own API key in the [Blockdaemon App](https://app.blockdaemon.com).\n",
"x-default": "2go1YqUcuAr4WZ2-3WgSD3c7qpatZqQuNWhTVBldKZnTSUtw"
}
},
"parameters": {
"blockchain_id": {
"name": "blockchain_id",
"in": "path",
"required": true,
"description": "Either a hyphen seperated protocol-network pair like `ethereum-mainnet` or the `chain-id`",
"schema": {
"type": "string",
"default": "ethereum-mainnet"
}
}
},
"responses": {
"ErrorTooManyRequests": {
"description": "Rate limit exceeded",
"content": {
"application/json": {
"schema": {
"$ref": "#/components/schemas/error"
},
"example": {
"type": "too-many-requests",
"title": "Too Many Requests",
"status": 429,
"detail": "Request rate limits have been exceeded. Try again after a few seconds."
}
}
}
},
"ErrorUnauthorized": {
"description": "Invalid or expired token",
"content": {
"application/json": {
"schema": {
"$ref": "#/components/schemas/error"
},
"example": {
"type": "unauthorized",
"title": "Invalid Token",
"status": 401
}
}
}
},
"ErrorInternal": {
"description": "An internal server error happened",
"content": {
"application/json": {
"schema": {
"$ref": "#/components/schemas/error"
},
"example": {
"type": "internal-server-error",
"title": "Internal Server Error",
"status": 500
}
}
}
},
"ErrorServiceUnavailable": {
"description": "The resource you are trying to access is currently unavailable",
"content": {
"application/json": {
"schema": {
"$ref": "#/components/schemas/error"
},
"example": {
"type": "unavailable",
"title": "Unavailable",
"status": 503
}
}
}
},
"ErrorNotImplemented": {
"description": "The request endpoint is not implemented",
"content": {
"application/json": {
"schema": {
"$ref": "#/components/schemas/error"
},
"example": {
"type": "not-implemented",
"title": "Not implemented",
"status": 501
}
}
}
}
},
"schemas": {
"Value": {
"description": "A value can either be a decimal string or the lowest unit of the currency as an integer",
"oneOf": [
{
"$ref": "#/components/schemas/IntegerValue"
},
{
"$ref": "#/components/schemas/StringValue"
}
],
"x-oapi-codegen-extra-tags": {
"validate": "required"
},
"x-go-type": "*value.Value"
},
"ValueOptional": {
"description": "A value can either be a decimal string or the lowest unit of the currency as an integer",
"oneOf": [
{
"$ref": "#/components/schemas/IntegerValue"
},
{
"$ref": "#/components/schemas/StringValue"
}
],
"x-go-type": "*value.Value",
"x-go-type-skip-optional-pointer": true
},
"IntegerValue": {
"title": "Integer Value",
"type": "integer",
"x-go-type": "*big.Int",
"description": "Value as an integer in the lowest unit of the currency (for example Wei or Satoshi)",
"example": 100000
},
"StringValue": {
"title": "String Value",
"type": "string",
"description": "Value as a string in human readable format. This is in the highest unit of the currecy (for example Eth or BTC)",
"example": "0.00001"
},
"ApiTxCreateRequestTron": {
"title": "Api Tx Create Request Tron",
"type": "object",
"properties": {
"from": {
"type": "string",
"description": "The account ID for the originating funds.",
"example": "TGepTLpYNhURKFxZPqWH4HmvZQsqJKSdj8",
"x-oapi-codegen-extra-tags": {
"validate": "required"
}
},
"to": {
"description": "The recipient of the transaction.",
"type": "string",
"example": "0x31c129468975e4ef41135a405000e6428a399a03d023b6627eed4cb95faf19ca",
"x-oapi-codegen-extra-tags": {
"validate": "required_without=Contract"
}
},
"value": {
"$ref": "#/components/schemas/ValueOptional"
},
"contract": {
"$ref": "#/components/schemas/ApiTxCreateRequestTronContract"
},
"expiration_seconds": {
"type": "integer",
"x-go-type": "int64",
"description": "Time in seconds the transaction will expire after creation. (Default 30 minutes)"
}
},
"required": [
"from",
"value"
]
},
"ApiTxCreateRequestTronContract": {
"title": "Api Tx Create Request Tron Contract",
"type": "object",
"properties": {
"address": {
"type": "string",
"x-oapi-codegen-extra-tags": {
"validate": "required"
},
"x-go-type-skip-optional-pointer": true
},
"parameter": {
"type": "string",
"x-oapi-codegen-extra-tags": {
"validate": "required_without=Data"
},
"x-go-type-skip-optional-pointer": true
},
"function_selector": {
"type": "string",
"x-oapi-codegen-extra-tags": {
"validate": "required_without=Data"
},
"x-go-type-skip-optional-pointer": true
},
"data": {
"type": "string",
"x-go-type-skip-optional-pointer": true
},
"fee_limit": {
"$ref": "#/components/schemas/ValueOptional"
}
}
},
"ApiTxCreateRequestStellar": {
"title": "Api Tx Create Request Stellar",
"type": "object",
"properties": {
"from": {
"type": "string",
"description": "The account ID for the originating funds.",
"example": "GA5XIGA5C7QTPTWXQHY6MCJRMTRZDOSHR6EFIBNDQTCQHG262N4GGKTM",
"x-oapi-codegen-extra-tags": {
"validate": "required"
}
},
"to": {
"description": "The recipient of the transaction.",
"type": "string",
"example": "GA4BYMUO5D7OLGVJWZ2D5FCWU7SB63FNZ4QUU574SMNA6ELK5TZD3SO3",
"x-oapi-codegen-extra-tags": {
"validate": "required"
}
},
"value": {
"$ref": "#/components/schemas/Value"
},
"fee": {
"$ref": "#/components/schemas/ValueOptional"
},
"expiration_seconds": {
"type": "integer",
"x-go-type": "int64",
"description": "Time the transaction will expire in seconds. Default is 30 minutes."
}
},
"required": [
"from",
"to",
"value"
]
},
"ApiTxCreateRequestBTC": {
"title": "Api Tx Create Request BTC",
"type": "object",
"properties": {
"from": {
"type": "array",
"items": {
"$ref": "#/components/schemas/ApiTxSourceBTC"
},
"description": "The source UTXOs.",
"x-oapi-codegen-extra-tags": {
"validate": "required,dive"
}
},
"to": {
"description": "The recipient of the transaction.",
"type": "array",
"items": {
"$ref": "#/components/schemas/ApiTxDestinationCreateBTC"
},
"x-oapi-codegen-extra-tags": {
"validate": "required,dive"
}
}
},
"x-oapi-codegen-extra-tags": {
"validate": "required,dive"
},
"required": [
"from",
"to"
]
},
"ApiTxCreateRequestSolana": {
"title": "Api Tx Create Request Solana",
"type": "object",
"properties": {
"from": {
"type": "string",
"description": "The account ID for the originating funds.",
"example": "6CNAHF4gK6FGjJ54QUyxC6ipS4WUdx6erpqNpS8Ar7Nq",
"x-oapi-codegen-extra-tags": {
"validate": "required"
}
},
"to": {
"description": "The recipient of the transaction.",
"type": "string",
"example": "2EMBiBdZaP2mdT9WkRSH15X58xcyigSndvQFA6TBA1Aq",
"x-oapi-codegen-extra-tags": {
"validate": "required"
}
},
"value": {
"$ref": "#/components/schemas/Value"
},
"nonce_account": {
"type": "string",
"description": "The nonce account used for the transfer.",
"example": "8GRipryfxcsxN8mAGjy8zbFo9ezaUsh47TsPzmZbuytU"
},
"fee": {
"description": "The prioritization fee.",
"type": "integer",
"x-go-type": "uint64"
}
},
"required": [
"from",
"to",
"value"
]
},
"ApiTxCreateTokenRequestTron": {
"title": "Api Tx Create Token Request Tron",
"type": "object",
"properties": {
"contract_address": {
"description": "The contract address of the token.",
"type": "string",
"x-oapi-codegen-extra-tags": {
"validate": "required"
}
},
"from": {
"type": "string",
"x-oapi-codegen-extra-tags": {
"validate": "required"
}
},
"to": {
"type": "string",
"x-oapi-codegen-extra-tags": {
"validate": "required"
}
},
"value": {
"$ref": "#/components/schemas/Value"
},
"fee_limit": {
"$ref": "#/components/schemas/ValueOptional"
},
"expiration_seconds": {
"type": "integer",
"x-go-type": "int64",
"description": "Time in seconds the transaction will expire after creation. (Default 30 minutes)"
}
},
"required": [
"from",
"to",
"contract_address",
"value",
"fee_limit"
]
},
"ApiTxCreateTokenRequestSolana": {
"title": "Api Tx Create Token Request Solana",
"type": "object",
"properties": {
"token_address": {
"description": "The mint account address of the token.",
"type": "string",
"x-oapi-codegen-extra-tags": {
"validate": "required"
}
},
"from": {
"description": "The owner's token account address to send the token from.",
"type": "string",
"x-oapi-codegen-extra-tags": {
"validate": "required"
}
},
"to": {
"description": "The recipients token account address to sent the token to.",
"type": "string",
"x-oapi-codegen-extra-tags": {
"validate": "required"
}
},
"value": {
"$ref": "#/components/schemas/Value"
},
"nonce_account": {
"type": "string",
"description": "The nonce account used for the transfer.",
"example": "8GRipryfxcsxN8mAGjy8zbFo9ezaUsh47TsPzmZbuytU"
},
"fee": {
"description": "The prioritization fee.",
"type": "integer",
"x-go-type": "uint64"
}
},
"required": [
"from",
"to",
"token_address",
"value"
]
},
"ApiTxSourceBTC": {
"type": "object",
"properties": {
"tx_id": {
"type": "string",
"description": "UTXO's transaction ID",
"example": "effd7af88861ccb25714216ba78561a8bf2e93ebe45b2deac37da8f284591b0e",
"x-oapi-codegen-extra-tags": {
"validate": "required"
}
},
"index": {
"type": "integer",
"format": "uint32",
"description": "UTXO's index in source transaction",
"example": 2
}
},
"required": [
"tx_id",
"index"
]
},
"ApiTxDestinationCreateBTC": {
"description": "The recipient of the transaction.",
"type": "object",
"properties": {
"destination": {
"type": "string",
"description": "The destination address.",
"example": "mkHS9ne12qx9pS9VojpwU5xtRd4T7X7ZUt",
"x-oapi-codegen-extra-tags": {
"validate": "required"
}
},
"value": {
"$ref": "#/components/schemas/Value"
}
},
"required": [
"destination",
"value"
],
"example": {
"destination": "31c129468975e4ef41135a405000e6428a399a03d023b6627eed4cb95faf19ca",
"value": 50
}
},
"ApiTxVerifyRequest": {
"anyOf": [
{
"$ref": "#/components/schemas/ApiTxVerifyRequestEVM"
},
{
"$ref": "#/components/schemas/ApiTxVerifyRequestBTC"
},
{
"$ref": "#/components/schemas/ApiTxVerifyRequestTron"
},
{
"$ref": "#/components/schemas/ApiTxVerifyRequestStellar"
},
{
"$ref": "#/components/schemas/ApiTxVerifyRequestSolana"
}
]
},
"ApiTxVerifyRequestEVM": {
"title": "Api Tx Verify Request EVM",
"type": "object",
"properties": {
"tx": {
"type": "object",
"properties": {
"to": {
"description": "The recipient of the transaction.",
"type": "string",
"example": "0x31c129468975e4ef41135a405000e6428a399a03d023b6627eed4cb95faf19ca",
"x-oapi-codegen-extra-tags": {
"validate": "required_without=Data"
}
},
"value": {
"description": "The amount you wish to transfer.",
"type": "integer",
"x-go-type": "big.Int",
"example": 1000000000000000000
},
"gas": {
"type": "integer",
"x-go-type": "big.Int",
"description": "Gas of transaction. If omitted, the gas will be estimated using eth_estimateGas."
},
"maxPriorityFeePerGas": {
"type": "integer",
"x-go-type": "big.Int",
"description": "The max priority fee per gas. Also referred to as the miner tip. When omitted an estimate will be used."
},
"maxFeePerGas": {
"type": "integer",
"x-go-type": "big.Int",
"description": "The max fee per gas, this includes the base fee and max priority fee per gas. When omitted an esitmate will be used."
},
"nonce": {
"type": "integer",
"x-go-type": "big.Int",
"description": "The account Nonce.",
"example": 5
},
"data": {
"description": "A hex string specifying the input data of the message call",
"type": "string",
"example": "0xa9059cbb000000000000000000000000e6026f60efc3d0e714f1b89c596aa484ffbd25c800000000000000000000000000000000000000000303b6ae12d00504a8ed8000"
}
},
"x-oapi-codegen-extra-tags": {
"validate": "required,dive"
}
},
"raw_encoded_tx": {
"type": "string",
"description": "The unsigned encoded transaction",
"example": "e909843b9aca008252089481b7e08f65bdf5648606c89998a9cc81643976478601d1a94a200080808080",
"x-oapi-codegen-extra-tags": {
"validate": "required"
}
}
},
"required": [
"raw_encoded_tx",
"tx"
]
},
"ApiTxVerifyRequestBTC": {
"title": "Api Tx Verify Request BTC",
"type": "object",
"properties": {
"tx": {
"$ref": "#/components/schemas/ApiTxCreateRequestBTC"
},
"raw_encoded_tx": {
"type": "string",
"description": "The encoded transaction",
"example": "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",
"x-oapi-codegen-extra-tags": {
"validate": "required"
}
}
},
"required": [
"tx",
"raw_encoded_tx"
]
},
"ApiTxVerifyRequestStellar": {
"title": "Api Tx Verify Request Stellar",
"type": "object",
"properties": {
"tx": {
"$ref": "#/components/schemas/ApiTxCreateRequestStellar"
},
"raw_encoded_tx": {
"type": "string",
"description": "The base64 encoded transaction",
"example": "AAAAAgAAAABhehOVEbl0UnzymYSWWQsx2xJdU/HaQo3uQqax0bFdsAAAAGQDB9ZVAAAA9QAAAAAAAAABAAAAHDl4dFdRODVlc0VtaHhCYldtZW0xajlHYUxLWU4AAAABAAAAAQAAAABhehOVEbl0UnzymYSWWQsx2xJdU/HaQo3uQqax0bFdsAAAAAEAAAAAuxgEkM+4NJcX8d144oJm5qsgFs7dDP5kbz3d+liGNd0AAAABRVVSQwAAAAAhEu6GOGfk4hn+JUwJGLALyepAB3W/w6tEMJcc5QWHfAAAAAABMS0AAAAAAAAAAAHRsV2wAAAAQJJoN4BqiDlwWVDbtPHaEkd0aOJihQX2EfbmoOt05Aj/flRuDtZbtI5NsWooGhkSivAvmSz4VxZuT847OPZJngc=",
"x-oapi-codegen-extra-tags": {
"validate": "required"
}
}
}
},
"ApiTxVerifyRequestSolana": {
"title": "Api Tx Verify Request Solana",
"type": "object",
"properties": {
"tx": {
"anyOf": [
{
"$ref": "#/components/schemas/ApiTxCreateRequestSolana"
},
{
"$ref": "#/components/schemas/ApiTxCreateTokenRequestSolana"
}
]
},
"raw_encoded_tx": {
"type": "string",
"description": "The base64 encoded transaction",
"example": "AAAAAgAAAABhehOVEbl0UnzymYSWWQsx2xJdU/HaQo3uQqax0bFdsAAAAGQDB9ZVAAAA9QAAAAAAAAABAAAAHDl4dFdRODVlc0VtaHhCYldtZW0xajlHYUxLWU4AAAABAAAAAQAAAABhehOVEbl0UnzymYSWWQsx2xJdU/HaQo3uQqax0bFdsAAAAAEAAAAAuxgEkM+4NJcX8d144oJm5qsgFs7dDP5kbz3d+liGNd0AAAABRVVSQwAAAAAhEu6GOGfk4hn+JUwJGLALyepAB3W/w6tEMJcc5QWHfAAAAAABMS0AAAAAAAAAAAHRsV2wAAAAQJJoN4BqiDlwWVDbtPHaEkd0aOJihQX2EfbmoOt05Aj/flRuDtZbtI5NsWooGhkSivAvmSz4VxZuT847OPZJngc=",
"x-oapi-codegen-extra-tags": {
"validate": "required"
}
}
}
},
"error": {
"type": "object",
"properties": {
"type": {
"type": "string",
"description": "The HTTP error type.",
"example": "bad-request"
},
"code": {
"type": "integer",
"description": "The numeric error code.",
"example": 16384
},
"title": {
"type": "string",
"description": "The short error description.",
"example": "Invalid Address"
},
"status": {
"type": "integer",
"description": "The HTTP status of the error.",
"example": 400
},
"detail": {
"type": "string",
"description": "Long error description",
"example": "The requested address is invalid on this protocol."
}
}
},
"ApiTxVerifyRequestTron": {
"title": "Api Tx Verify Request Tron",
"type": "object",
"properties": {
"tx": {
"anyOf": [
{
"$ref": "#/components/schemas/ApiTxCreateRequestTron"
},
{
"$ref": "#/components/schemas/ApiTxCreateTokenRequestTron"
}
]
},
"raw_encoded_tx": {
"type": "string",
"description": "The hex encoded protobuf unsigned transaction.",
"example": "0a022ba0220887ae7932301801b540a0b2a7a1fc315a66080112620a2d747970652e676f6f676c65617069732e636f6d2f70726f746f636f6c2e5472616e73666572436f6e747261637412310a1541494e9270255e7cf4d32ed1ceb9af9bf44abd21bd121541242aa579f130bf6fea5eac12aa6b846fb8b293ab18e80770b8f2a3a1fc31",
"x-oapi-codegen-extra-tags": {
"validate": "required"
}
}
},
"required": [
"tx",
"raw_encoded_tx"
]
}
}
}
}
```