ISRC GBSMU4111271
Verified recording
GBSMU4111271 is “Nocturne-Valse in C Minor No. 3” by Carlos Marquez,
registered on the CopyrightChains blockchain with CopyrightID
0xf5921d807324c3430c225b5c91adf16097f66ed7481bdc3eea650c87945e7a37 and independently timestamped
in Bitcoin block 960203 on 2026-07-30.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU4111271.
Recording identifiers
- ISRC
- GBSMU4111271
- Title
- Nocturne-Valse in C Minor No. 3
- Artist
- Carlos Marquez
- CopyrightID (CopyrightChains transaction hash)
0xf5921d807324c3430c225b5c91adf16097f66ed7481bdc3eea650c87945e7a37
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-30T03:35:13+00:00
- Bitcoin block
- 960203
- Canonical record hash
sha256:d5aeb4827cd26714eafef9e324049abce82a2431c826c7154905ffa0d4a3a189- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU4111271
- Bitcoin block existence check
- https://blockstream.info/api/block/960203
Full record
Track page: Nocturne-Valse in C Minor No. 3 · Machine-readable JSON-LD