Introduction & Allegro

Recording by Kees Olthuis.

Recording identifiers

ISRC
DEFG21926541
CopyrightID (CopyrightChains transaction hash)
0x0d2a5362e5ccc53bea37f89e1a6f8bd87ead3e11da245f0b03f80d00bf44432c
Copyright registration time
2026-07-06T22:22:37+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:4f8240988cf7e86828820ff5ae31757fd07e002039525f1ba20cadb65f9a8f84

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.