ISRC ES5621600408
Verified recording
ES5621600408 is “Guantanamera” by Alberto Cortez,
registered on the CopyrightChains blockchain with CopyrightID
0x37ec9b9cfc24a768abb6ec4def36cee6e4831eae3c55cbb88f5f01e38e61b931 and independently timestamped
in Bitcoin block 960236 on 2026-07-30.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5621600408.
Recording identifiers
- ISRC
- ES5621600408
- Title
- Guantanamera
- Artist
- Alberto Cortez
- CopyrightID (CopyrightChains transaction hash)
0x37ec9b9cfc24a768abb6ec4def36cee6e4831eae3c55cbb88f5f01e38e61b931
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-30T09:37:10+00:00
- Bitcoin block
- 960236
- Canonical record hash
sha256:9b6270c4aff1280cc570810086d250d582bcc4a66f95f663c047f48e36ea6c87- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5621600408
- Bitcoin block existence check
- https://blockstream.info/api/block/960236