Hammering Heart

Recording by John Mark McMillan.

Recording identifiers

ISRC
USCGH2010384
CopyrightID (CopyrightChains transaction hash)
0x952bcd11f04797bfa1e47d0ee2b3a4af1228487b72c9984f5d02de1ae0f7dedf
Copyright registration time
2026-06-10T03:49:11+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-06-13T13:32:09Z
Bitcoin block
953520
Canonical record hash
sha256:f4b4bb025e05e5f47bccbf44bad6cb26a7372c20cb41d2d42bcda4a2859cbd88

What this proof establishes

This recording belongs to ProofProfile's historical evidence base derived from the pre-2022 AcousticBrainz and MusicBrainz corpus. ISRC is the stable recording-level bridge from that source corpus to the authoritative cc-db-prod track record.

CopyrightChains and Bitcoin OpenTimestamps make the exact committed record independently verifiable today. The cryptographic proof does not by itself establish authorship or ownership of the underlying recording.

Read the complete pre-generative-AI provenance and verification method.