Letter Back

Recording by K Koke.

Recording identifiers

ISRC
FR10S1831171
CopyrightID (CopyrightChains transaction hash)
0x97860fdb20322459549ea41c7f0f454f9e9479cb75d5f46a70a9213e353363cc
Copyright registration time
2026-06-07T11:30:25+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T03:55:08Z
Bitcoin block
956304
Canonical record hash
sha256:22486ac3e08278ee87749a206ff0991f105c6938353f126fa80a10cfdc702ca6

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.