getmempoolancestors | Alchemy Docs

Returns the in-mempool ancestors of a given transaction.

⚠ This endpoint is only available with Blast access.

apiKeystringRequired

This endpoint expects an object.

txidstringRequiredformat: "^[a-fA-F0-9]{64}$"

The transaction ID whose ancestors to retrieve.

verbosebooleanOptionalDefaults to false

Whether to return detailed info (true) or just txids (false).

The mempool ancestors of the specified transaction.

list of strings

A list of ancestor transaction IDs.

map from strings to objects

1	import requests
2
3	url = "https://bitcoin-mainnet.alchemy-blast.com/v2/:apiKey"
4
5	payload = {
6	"0": "b86ae732473ff2c91c04073ec9cbef5e4ddaa701741e141e41345df72122b795",
7	"1": False
8	}
9	headers = {"Content-Type": "application/json"}
10
11	response = requests.post(url, json=payload, headers=headers)
12
13	print(response.json())

1	{
2	"jsonrpc": "2.0",
3	"id": "1",
4	"result": [
5	"6f8c6e8d3021d8a1db71eae3cb8db00f1c99d0f94f3b5782e6cfc155b55f3c55",
6	"a4d47b8bdee5f5b8c098c9ac9aa4e3ec113d9f305a4f723d617a92439ab244cb"
7	]
8	}