Bittersweet

Recording identifiers

ISRC

QMFMF2223763

CopyrightID (CopyrightChains transaction hash)

0x01cf805392b1ff3c1f931809a1b420a7b9938cc76cfc20bc35d702defce1a438

Copyright registration time

2026-06-21T16:04:24+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-02T03:30:09Z

Bitcoin block

956302

Canonical record hash

sha256:5406f66addb5cbe6a106e2e338c0a5d181a80b446a6bddb00778723918d3bf3c

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result

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.