ISRC GBAYC0901431
Verified recording
GBAYC0901431 is “Mayer: Valse mélancolique in F-Sharp Minor, Op. 332 "Le regret" (Previously attributed to Chopin)” by Charles Mayer,
registered on the CopyrightChains blockchain with CopyrightID
0x61f879e5b642374ebf711128ae5def2655d1ce3ae6a37c555c79e49e0cbd8435 and independently timestamped
in Bitcoin block 960291 on 2026-07-30.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC0901431.
Recording identifiers
- ISRC
- GBAYC0901431
- Title
- Mayer: Valse mélancolique in F-Sharp Minor, Op. 332 "Le regret" (Previously attributed to Chopin)
- Artist
- Charles Mayer
- CopyrightID (CopyrightChains transaction hash)
0x61f879e5b642374ebf711128ae5def2655d1ce3ae6a37c555c79e49e0cbd8435
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-30T18:23:33+00:00
- Bitcoin block
- 960291
- Canonical record hash
sha256:d084277106d161dd135a398d24e34f585fa52cbd83eab46e8e873da92ebf674f- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC0901431
- Bitcoin block existence check
- https://blockstream.info/api/block/960291
Full record
Track page: Mayer: Valse mélancolique in F-Sharp Minor, Op. 332 "Le regret" (Previously attributed to Chopin) · Machine-readable JSON-LD