Porgy and Bess, Act I: Summertime

Recording identifiers

ISRC

GBF076040526

Release date of the album this recording appears on

1960-01-01

CopyrightID (CopyrightChains transaction hash)

0xb0a342ea6ae70f9056c72a34b33d10060d33211290d42fac6e540759f76fb05c

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T12:24:41Z

Bitcoin block

960397

Canonical record hash

sha256:033397aa97d9d135a59dbace569b7eafb07e77ec413934d905504fc0bf51e950

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC GBF076040526

What this proof establishes

This recording was released in 1960, 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.