Porgy and Bess / Act 1: Introduction - Jazzbo Brown Blues

Recording identifiers

ISRC

GBF077540201

Release date of the album this recording appears on

1976-01-01

CopyrightID (CopyrightChains transaction hash)

0x0989cf4b423066f6b85a8088025c5faf99d91c3bd03c972610eabcb5dc9fdc22

Copyright registration time

2026-07-06T18:11:40+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-14T18:13:17Z

Bitcoin block

958041

Canonical record hash

sha256:e1dfd7f6d3389cecb33e15dda6deaa2910bd14d82efd9b30ce1dff02cc542323

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC GBF077540201

What this proof establishes

This recording was released in 1976, 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.