Porgy And Bess: Introduction and Jasbo Brown Blues

Recording identifiers

ISRC

USBC17600294

Release date of the album this recording appears on

1977

CopyrightID (CopyrightChains transaction hash)

0xce7f48d3fcaea74fb4e1e8c3102bd7b6a6d7b329774c064b6c3d8c8d6b2fe548

Copyright registration time

2026-06-26T21:37:36+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-02T03:55:08Z

Bitcoin block

956304

Canonical record hash

sha256:7540611e1e7f984918a9c80cc82bfda50aa39cb2fe183b061bf461cebd96cd6d

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC USBC17600294

What this proof establishes

This recording was released in 1977, 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.