Contract Song

Recording by Kai Hansen.

Recording identifiers

ISRC
DEH841600487
CopyrightID (CopyrightChains transaction hash)
0xd9044de08b61be96bbc4d43cb0c62a7006d808cbf6c426370cabf87400e4807a
Copyright registration time
2026-06-21T23:05:52+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T03:30:09Z
Bitcoin block
956302
Canonical record hash
sha256:9124982275fcbd381a016edbd2402097346042ee2c970c98bca97ca00be1b9c6

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.