ISRC CLKR21600310
Verified recording
CLKR21600310 is “Círculo” by Kalfu,
registered on the CopyrightChains blockchain with CopyrightID
0xe6a296498f749354d51191eb61c0c9c3e7483745243d7bb7b0a1ef9d3a762bf5 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/CLKR21600310.
Recording identifiers
- ISRC
- CLKR21600310
- Title
- Círculo
- Artist
- Kalfu
- CopyrightID (CopyrightChains transaction hash)
0xe6a296498f749354d51191eb61c0c9c3e7483745243d7bb7b0a1ef9d3a762bf5
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-08T03:20:19+00:00
- Bitcoin block
- 957118
- Canonical record hash
sha256:9b58c44fe158022a0750bed9f107b7cfcb83048591df710116197f3d7133c27f- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CLKR21600310
- Bitcoin block existence check
- https://blockstream.info/api/block/957118