ISRC GBSMU2430850
Verified recording
GBSMU2430850 is “Valse melancolique No. 12 in B Minor -for the left hand-” by Carlos Marquez,
registered on the CopyrightChains blockchain with CopyrightID
0x4fd901a19faa6eba3fdda6728cfd30a81f5a00bca5120696f64724f58b2845dd and independently timestamped
in Bitcoin block 960509 on 2026-08-01.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU2430850.
Recording identifiers
- ISRC
- GBSMU2430850
- Title
- Valse melancolique No. 12 in B Minor -for the left hand-
- Artist
- Carlos Marquez
- CopyrightID (CopyrightChains transaction hash)
0x4fd901a19faa6eba3fdda6728cfd30a81f5a00bca5120696f64724f58b2845dd
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-08-01T04:30:37+00:00
- Bitcoin block
- 960509
- Canonical record hash
sha256:a914c8061f237ca621fc05a6c5efa06b27a09ba9983d9db30ce15f2445aeddda- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU2430850
- Bitcoin block existence check
- https://blockstream.info/api/block/960509
Full record
Track page: Valse melancolique No. 12 in B Minor -for the left hand- · Machine-readable JSON-LD