Piano Man

Recording by Wolfgang Haffner.

Recording identifiers

ISRC
DEA891500112
CopyrightID (CopyrightChains transaction hash)
0x5ff336e79fa2354d441ccf338be922e0f42307cc9cbc0c5a456222b7df1912d7
Copyright registration time
2026-06-18T03:27:01+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T03:30:09Z
Bitcoin block
956302
Canonical record hash
sha256:f1cc2bcabbd334c4cac622eb3e8b2323ad088f6bd699aa2a132784293d6ab99b

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.