Colloquial Preludes: No. 11 in E Major

Recording by Sérgio Assad.

Recording identifiers

ISRC
ES25S2500011
CopyrightID (CopyrightChains transaction hash)
0xc491ac84341ef03f097930d809b3b41651830d583fd327e729874bc1c152cc57
Copyright registration time
2026-07-30T21:23:50+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-30T21:35:24Z
Bitcoin block
960317
Canonical record hash
sha256:6582d61c44364445c2f3b865619ba9240eded1757269dc5d9bf93a763078775e

What this proof establishes

This recording belongs to ProofProfile's historical evidence base derived from the pre-2022 AcousticBrainz and MusicBrainz corpus. 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.