getblockcount | Alchemy Docs

Returns the number of blocks in the longest fully validated blockchain.

⚠ This endpoint is only available with Blast access.

apiKeystringRequired

The number of blocks in the current best blockchain.

1	curl -X POST https://bitcoin-mainnet.alchemy-blast.com/v2/{apiKey} \
2	-H "Content-Type: application/json" \
3	-d '{
4	"jsonrpc": "2.0",
5	"method": "getblockcount",
6	"params": [],
7	"id": 1
8	}'