ISRC US3Z40700898
Verified recording
US3Z40700898 is “Una Extraña Tristeza” by Cheo Zurrilla,
registered on the CopyrightChains blockchain with CopyrightID
0xc1a30824b3cfd4fa0b21d672c404a59914fcab72cb6f82bea1e2f30b4a9dfadb and independently timestamped
in Bitcoin block 957118 on 2026-07-08.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US3Z40700898.
Recording identifiers
- ISRC
- US3Z40700898
- Title
- Una Extraña Tristeza
- Artist
- Cheo Zurrilla
- CopyrightID (CopyrightChains transaction hash)
0xc1a30824b3cfd4fa0b21d672c404a59914fcab72cb6f82bea1e2f30b4a9dfadb
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-08T03:20:19+00:00
- Bitcoin block
- 957118
- Canonical record hash
sha256:d190128657d4db804ad90dd7297dee222d8e36c9e969c43a77024ad1c5d87e9b- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US3Z40700898
- Bitcoin block existence check
- https://blockstream.info/api/block/957118