Blockheads

Recording by Mark Lettieri.

Recording identifiers

ISRC
QMAAK1902725
CopyrightID (CopyrightChains transaction hash)
0x340b6c5c2533fcc76e7fadda5a19c13bce9a7bfccbf2f6ed208f3fdcf6794c88
Copyright registration time
2026-06-25T19:25:24+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T11:34:59Z
Bitcoin block
956349
Canonical record hash
sha256:d43d818db3216ef5e549905fb56f50c0ae8450e2d8b97b104932a3d5fac19e85

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.