Mempool
Get all Transaction Identifiers in the mempool
A NetworkRequest is utilized to retrieve some data specific exclusively to a NetworkIdentifier.
POST /mempool HTTP/1.1
Host: ada.nownodes.io
api-key: YOUR_API_KEY
Content-Type: application/json
Accept: */*
Content-Length: 197
{
"network_identifier": {
"blockchain": "cardano",
"network": "mainnet",
"sub_network_identifier": {
"network": "shard 1",
"metadata": {
"producer": "0x52bc44d5378309ee2abf1539bf71de1b7d7be3b5"
}
}
},
"metadata": {}
}
{
"transaction_identifiers": [
{
"hash": "0x2f23fd8cca835af21f3ac375bac601f97ead75f2e79143bdf71fe2c4be043e8f"
}
]
}
Get a transaction in the mempool by its Transaction Identifier. This is a separate request than fetching a block transaction (/block/transaction) because some blockchain nodes need to know that a transaction query is for something in the mempool instead of a transaction in a block. Transactions may not be fully parsable until they are in a block (ex: may not be possible to determine the fee to pay before a transaction is executed). On this endpoint, it is ok that returned transactions are only estimates of what may actually be included in a block.
A MempoolTransactionRequest is utilized to retrieve a transaction from the mempool.
POST /mempool/transaction HTTP/1.1
Host: ada.nownodes.io
api-key: YOUR_API_KEY
Content-Type: application/json
Accept: */*
Content-Length: 286
{
"network_identifier": {
"blockchain": "cardano",
"network": "mainnet",
"sub_network_identifier": {
"network": "shard 1",
"metadata": {
"producer": "0x52bc44d5378309ee2abf1539bf71de1b7d7be3b5"
}
}
},
"transaction_identifier": {
"hash": "0x2f23fd8cca835af21f3ac375bac601f97ead75f2e79143bdf71fe2c4be043e8f"
}
}
{
"transaction": {
"transaction_identifier": {
"hash": "0x2f23fd8cca835af21f3ac375bac601f97ead75f2e79143bdf71fe2c4be043e8f"
},
"operations": [
{
"operation_identifier": {
"index": 5,
"network_index": 0
},
"related_operations": [
{
"index": 1
},
{
"index": 2
}
],
"type": "Transfer",
"status": "Reverted",
"account": {
"address": "0x3a065000ab4183c6bf581dc1e55a605455fc6d61",
"sub_account": {
"address": "0x6b175474e89094c44da98b954eedeac495271d0f",
"metadata": {}
},
"metadata": {
"chain_code": "text"
}
},
"amount": {
"value": "1238089899992",
"currency": {
"symbol": "BTC",
"decimals": 8,
"metadata": null
},
"metadata": {}
},
"coin_change": {
"coin_identifier": {
"identifier": "0x2f23fd8cca835af21f3ac375bac601f97ead75f2e79143bdf71fe2c4be043e8f:1"
},
"coin_action": "coin_created"
},
"metadata": {
"staking_credential": {
"hex_bytes": "1B400D60AAF34EAF6DCBAB9BBA46001A23497886CF11066F7846933D30E5AD3F",
"curve_type": "edwards25519"
},
"payment_key": {
"hex_bytes": "1B400D60AAF34EAF6DCBAB9BBA46001A23497886CF11066F7846933D30E5AD3F",
"curve_type": "edwards25519"
},
"asm": "304502201fd8abb11443f8b1b9a04e0495e0543d05611473a790c8939f089d073f90509a022100f4677825136605d732e2126d09a2d38c20c75946cd9fc239c0497e84c634e3dd01 03301a8259a12e35694cc22ebc45fee635f4993064190f6ce96e7fb19a03bb6be2",
"hex": "48304502201fd8abb11443f8b1b9a04e0495e0543d05611473a790c8939f089d073f90509a022100f4677825136605d732e2126d09a2d38c20c75946cd9fc239c0497e84c634e3dd012103301a8259a12e35694cc22ebc45fee635f4993064190f6ce96e7fb19a03bb6be2"
}
}
],
"related_transactions": [
{
"network_identifier": {
"blockchain": "cardano",
"network": "mainnet",
"sub_network_identifier": {
"network": "shard 1",
"metadata": {
"producer": "0x52bc44d5378309ee2abf1539bf71de1b7d7be3b5"
}
}
},
"transaction_identifier": {
"hash": "0x2f23fd8cca835af21f3ac375bac601f97ead75f2e79143bdf71fe2c4be043e8f"
},
"direction": "forward"
}
],
"metadata": {
"size": 12378,
"lockTime": 1582272577
}
},
"metadata": {
"descendant_fees": 123923,
"ancestor_count": 2
}
}