The Contest

Recording by Stephen Sondheim.

Recording identifiers

ISRC
USB960552515
CopyrightID (CopyrightChains transaction hash)
0x9c7eeccf451c1c3c288de0918da8a4b387bf3f359aa2e6ba6f9ce66575eb85bb
Copyright registration time
2026-07-06T22:25:46+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:735302cec63ceb8a77c7d391264f144f7eeb7f66d348ca94996f8b8ffc6bd016

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.