Fantasia Chromatica

Recording by Jan Pieterszoon Sweelinck.

Recording identifiers

ISRC
US6R21503811
CopyrightID (CopyrightChains transaction hash)
0x99c3c011abb530fd8269ae0629b5a309a2983a0e3244c9c5032a352585f6bc15
Copyright registration time
2026-07-31T11:13:34+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-31T12:24:41Z
Bitcoin block
960397
Canonical record hash
sha256:1f807998b09cb8464a6414642412298d8769124773b63c747af7bd778a83d6de

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.