Toccata In F

Recording by Klaas Jan Mulder.

Recording identifiers

ISRC
NLA241800122
CopyrightID (CopyrightChains transaction hash)
0x9534cd310ffc609b4608aeaa2c8733c928b8ae76dce18c2a02afdc22a2a8a8bd
Copyright registration time
2026-06-20T13:15:06+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T03:30:09Z
Bitcoin block
956302
Canonical record hash
sha256:de671595ed43925f83777a5b66b2b9c7368ca088575d6ed476e89b97d641af17

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.