ISRC ES5086900058
Verified recording
ES5086900058 is “Nostalgia” by Alfonso Sainz,
registered on the CopyrightChains blockchain with CopyrightID
0xb81a67a5dc81711265298225a442eece044de2f82a93ac4ce737e57311cf9e23 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/ES5086900058.
Recording identifiers
- ISRC
- ES5086900058
- Title
- Nostalgia
- Artist
- Alfonso Sainz
- CopyrightID (CopyrightChains transaction hash)
0xb81a67a5dc81711265298225a442eece044de2f82a93ac4ce737e57311cf9e23
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-08T03:20:19+00:00
- Bitcoin block
- 957118
- Canonical record hash
sha256:7fa589f826fc3630a4bfb30f20222594f6a658ccb9fe876db30169144df666d9- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5086900058
- Bitcoin block existence check
- https://blockstream.info/api/block/957118