Vals No. 4

Recording by John C. Williams.

Recording identifiers

ISRC
USSM19402003
CopyrightID (CopyrightChains transaction hash)
0xc2201977124d8d9a423224b8a67bf7a6dd02b5e20cfd035dee731ae069c8d8f8
Copyright registration time
2026-06-25T08:06:46+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:ac5320446321625fd4b38c0b3d03371b2f7fedceb657403c860915a9d104ea73

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.