ISRC CA5KR1552238
Verified recording
CA5KR1552238 is “Nostalgias” by Roberto Calo,
registered on the CopyrightChains blockchain with CopyrightID
0x4f70ef919954485deb760532e9b0411f6bfeab00fd9e77f1d65376fd73d46d1f and independently timestamped
in Bitcoin block 960376 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR1552238.
Recording identifiers
- ISRC
- CA5KR1552238
- Title
- Nostalgias
- Artist
- Roberto Calo
- CopyrightID (CopyrightChains transaction hash)
0x4f70ef919954485deb760532e9b0411f6bfeab00fd9e77f1d65376fd73d46d1f
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T09:09:19+00:00
- Bitcoin block
- 960376
- Canonical record hash
sha256:b0f3d0a5ccb07bde8824f3b90938a21f790eb07d3f7f1ac3c0de28584d5ed74a- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR1552238
- Bitcoin block existence check
- https://blockstream.info/api/block/960376