Two

Recording by Ab Schaap Septet.

Recording identifiers

ISRC
NLSH72500137
CopyrightID (CopyrightChains transaction hash)
0x5df84668d1a0c642efc98d7572404a41f6711af1c34e7d46bb9216570d19e128
Copyright registration time
2026-06-21T17:29:12+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T03:30:09Z
Bitcoin block
956302
Canonical record hash
sha256:0ac21f7b96478cdb868e90a3c25f49abbefaa612f2fdabf95d72e66325dc4c8e

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.