Sepia

Recording identifiers

ISRC

CALC42020521

Release date of the album this recording appears on

2021-02-05

CopyrightID (CopyrightChains transaction hash)

0xc5a5374c03e5e89a4be515c73daaf216c99eefe2962f904a655f3300243dc5df

Copyright registration time

2026-08-01T02:15:24+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-08-01T03:13:03Z

Bitcoin block

960500

Canonical record hash

sha256:6f3ad97e695ca073c077f122e0c8bc685385f2757f9db25f01d7f4a693ac7f93

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC CALC42020521

What this proof establishes

This recording was released in 2021, before generative AI. ProofProfile's catalogue derives from the pre-2022 AcousticBrainz and MusicBrainz source corpus, and 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.