Trois couleurs Bleu: IV. The Battle of Carnival and Lent II

Recording by Zbigniew Preisner.

Recording identifiers

ISRC
NLY331800310
Release date of the album this recording appears on
2018-03-30
CopyrightID (CopyrightChains transaction hash)
0x9f2b4a61b72310a65357ec6c551d47de568ac273bed7ef3283cb6eaeac59d9ca
Copyright registration time
2026-07-31T15:44:35+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-31T15:59:18Z
Bitcoin block
960427
Canonical record hash
sha256:4e56bb2038c14ac8bdd86a27b1ca0d554b8bcc8dcb16c814a048c685eb44b03a

What this proof establishes

This recording was released in 2018, 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.