A tear

Recording by Modest Mussorgsky.

Recording identifiers

ISRC
FRZ148705190
CopyrightID (CopyrightChains transaction hash)
0xa2264f1e4b1f6c708829b98876eca3040c2c665e9be861425c6021ac4bf2860a
Copyright registration time
2026-07-29T21:41:13+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-29T23:23:05Z
Bitcoin block
960164
Canonical record hash
sha256:a75df5f01cdd2654d6d0838c5bed94ca495dd36c54df64e1ac861b17f9136e0f

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.