Prelude in A-Flat Major, KK IVb/7. Presto con leggierezza

Recording by Frédéric Chopin.

Recording identifiers

ISRC
DEN962402270
CopyrightID (CopyrightChains transaction hash)
0x4a0a5050c02292e5c5f8bb4160c3715b8a427cd6cdb41d6dbd6affd39f6a5380
Copyright registration time
2026-06-07T15:27:33+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-06-13T12:53:06Z
Bitcoin block
953515
Canonical record hash
sha256:4f52cbd0f18aeb729c1306af53875eeff6010992df4274c4e280d0e99e2b1ad0

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.