ISRC GBSMU2430761
Verified recording
GBSMU2430761 is “Valse melancolique No. 7 in F Sharp Minor -for the left hand-” by Carlos Marquez,
registered on the CopyrightChains blockchain with CopyrightID
0xf9d4f7ad604b3f01f0bcca9d3cd406d02f65e27b9fd25f70dcd95165a92ddfd5 and independently timestamped
in Bitcoin block 953520 on 2026-06-13.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU2430761.
Recording identifiers
- ISRC
- GBSMU2430761
- Title
- Valse melancolique No. 7 in F Sharp Minor -for the left hand-
- Artist
- Carlos Marquez
- CopyrightID (CopyrightChains transaction hash)
0xf9d4f7ad604b3f01f0bcca9d3cd406d02f65e27b9fd25f70dcd95165a92ddfd5
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-06-13T13:32:09+00:00
- Bitcoin block
- 953520
- Canonical record hash
sha256:e7685758a5049629010bcc435b85fa8726e6daca34d6ec42560cdcfc9846e901- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU2430761
- Bitcoin block existence check
- https://blockstream.info/api/block/953520
Full record
Track page: Valse melancolique No. 7 in F Sharp Minor -for the left hand- · Machine-readable JSON-LD