ISRC USUM72021972
Verified recording
USUM72021972 is “El Sobrinón” by Martin Marquez,
registered on the CopyrightChains blockchain with CopyrightID
0x9700867ed9d7ee7c9a63d8cc98819977faaa804cfe699d74f08e2cbc4cea108f and independently timestamped
in Bitcoin block 960207 on 2026-07-30.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM72021972.
Recording identifiers
- ISRC
- USUM72021972
- Title
- El Sobrinón
- Artist
- Martin Marquez
- CopyrightID (CopyrightChains transaction hash)
0x9700867ed9d7ee7c9a63d8cc98819977faaa804cfe699d74f08e2cbc4cea108f
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-30T04:47:22+00:00
- Bitcoin block
- 960207
- Canonical record hash
sha256:678c2c1bf8e6d8d85c0518575194898b312afe99492ae5421a25bc62070a8a33- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM72021972
- Bitcoin block existence check
- https://blockstream.info/api/block/960207