Première leçon à une voix: Aleph. Quomodo sedet sola civitas

Recording identifiers

ISRC

ES7141500416

Release date of the album this recording appears on

1991-12-03

CopyrightID (CopyrightChains transaction hash)

0xef54a644e804cefd3a3d86265d157462b49a54f7a795d6a4385a8d4f813bf289

Copyright registration time

2026-07-31T21:05:24+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T21:25:57Z

Bitcoin block

960468

Canonical record hash

sha256:b49c620bd04bf04d89a876011b33f65e0ad2ece70fef726847aa56bb7740d637

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC ES7141500416

What this proof establishes

This recording was released in 1991, 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.