ISRC USL4R2128842
Verified recording
USL4R2128842 is “El Ac” by Martin Marquez,
registered on the CopyrightChains blockchain with CopyrightID
0x665d739b500cfffa5e17e587fd1a46a9916f06d3542f382b3177ea0fe8ea7353 and independently timestamped
in Bitcoin block 956304 on 2026-07-02.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USL4R2128842.
Recording identifiers
- ISRC
- USL4R2128842
- Title
- El Ac
- Artist
- Martin Marquez
- CopyrightID (CopyrightChains transaction hash)
0x665d739b500cfffa5e17e587fd1a46a9916f06d3542f382b3177ea0fe8ea7353
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-02T03:55:08+00:00
- Bitcoin block
- 956304
- Canonical record hash
sha256:b8e2bb04c7cde32f99064d476ce1be398d6079a404889d749182440dc9540aca- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USL4R2128842
- Bitcoin block existence check
- https://blockstream.info/api/block/956304