Four Characteristic Pieces: No. 1, Ballade

Recording by William Hurlstone.

Recording identifiers

ISRC
FRY220104882
CopyrightID (CopyrightChains transaction hash)
0xdf5b25158e1bcf4296fc796598804d9926c84c9f68f49b2186e58cd6297d8fe7
Copyright registration time
2026-07-31T11:43:00+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-31T12:24:41Z
Bitcoin block
960397
Canonical record hash
sha256:a1d68dafe7470374ef270cde0ce04b85a1157e6e244f6a009b9b64ef6eb40687

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.