GET /block/:hash/header - Validation Cloud

Returns the hex-encoded block header. This method will use 10 Compute Units.

Parameters

block- block hash, required. Example: 0000000000000000000226ab487ff1a8456a30feb1bde3d65b6a67128074e19a

Returns

Returns the hex-encoded block header. The response from this endpoint can be cached indefinitely.

0000ac2511730758cca9d49bb6cfb80f2e71a78208370d939a91010000000000000000008f4315a66896bb5e2ef5d3778d09e3f34ab568c16614832ddefafdc015eb4c96ab0d9f68b32c02174576cd9d

curl https://mainnet.bitcoin.validationcloud.io/v1/<YOUR_API_KEY_HERE>/block/0000000000000000000226ab487ff1a8456a30feb1bde3d65b6a67128074e19a/header \
 -X GET

curl https://testnet.bitcoin.validationcloud.io/v1/<YOUR_API_KEY_HERE>/block/0000000000000000000226ab487ff1a8456a30feb1bde3d65b6a67128074e19a/header \
 -X GET