Porgy And Bess: What's de Matter Wid You, Sister?

Recording identifiers

ISRC

USBC17600319

Release date of the album this recording appears on

1977

CopyrightID (CopyrightChains transaction hash)

0x68311e7362e02d49799ed59e4273810b423249b197795d1cb707d187968cba67

Copyright registration time

2026-07-31T14:29:26+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T15:20:15Z

Bitcoin block

960418

Canonical record hash

sha256:bdb0ad08d75cc7b1e1755ee8bd31e9a53361bf53a53e4511b9e71a5cd4e27efe

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC USBC17600319

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.