Catfish Blues - Live Fillmore Auditorium, San Francisco, CA, February, 4, 1968 (Second Show)

Recording identifiers

ISRC

USQX90901112

Release date of the album this recording appears on

2011-09-13

CopyrightID (CopyrightChains transaction hash)

0xa9f8975667dcadb4e3d19e5cdf051e86fb46973126c076d7c355765d018d8a1b

Copyright registration time

2026-07-06T08:12:27+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-07T18:39:05Z

Bitcoin block

957073

Canonical record hash

sha256:4e2098ec50807e7cb9ce6d3412764ba34b25135676b6c7dd0daa46573c91e40d

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC USQX90901112

What this proof establishes

This recording was released in 2011, 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.