Once Again

Recording by Matisse & Sadko.

Recording identifiers

ISRC
NLM5S2402278
CopyrightID (CopyrightChains transaction hash)
0x60a05ff41028b340832e84c04ab5f74a9e071f97bf1be67cc2b3fd9f2a7a25bf
Copyright registration time
2026-06-06T02:10:53+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-06-13T15:41:10Z
Bitcoin block
953528
Canonical record hash
sha256:3e7f01607d2755167f0446c85044d1f21a0b499a8903734af26310d2b1aa1d59

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.