ISRC GBSMU2430749
Verified recording
GBSMU2430749 is “Valse melancolique No. 1 in C Minor -for the left hand-” by Carlos Marquez,
registered on the CopyrightChains blockchain with CopyrightID
0xcfd730b1cbcc137c3c91979bcabe66a9136419adf8ec5e0fddd8e44d0f57b562 and independently timestamped
in Bitcoin block 953515 on 2026-06-13.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU2430749.
Recording identifiers
- ISRC
- GBSMU2430749
- Title
- Valse melancolique No. 1 in C Minor -for the left hand-
- Artist
- Carlos Marquez
- CopyrightID (CopyrightChains transaction hash)
0xcfd730b1cbcc137c3c91979bcabe66a9136419adf8ec5e0fddd8e44d0f57b562
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-06-13T12:53:06+00:00
- Bitcoin block
- 953515
- Canonical record hash
sha256:d38db911339adc1d4e8cb698aa5b388d01dd569b7410cf3c3e8f6de2e224e78e- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU2430749
- Bitcoin block existence check
- https://blockstream.info/api/block/953515
Full record
Track page: Valse melancolique No. 1 in C Minor -for the left hand- · Machine-readable JSON-LD