ISRC CA6D21900385
Verified recording
CA6D21900385 is “You Used To” by Duumu,
registered on the CopyrightChains blockchain with CopyrightID
0x4363315f3aa6f22b184906957489048d6289f159a65d9612dcdf4e041c8a6129 and independently timestamped
in Bitcoin block 960150 on 2026-07-29.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA6D21900385.
Recording identifiers
- ISRC
- CA6D21900385
- Title
- You Used To
- Artist
- Duumu
- CopyrightID (CopyrightChains transaction hash)
0x4363315f3aa6f22b184906957489048d6289f159a65d9612dcdf4e041c8a6129
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-29T21:51:49+00:00
- Bitcoin block
- 960150
- Canonical record hash
sha256:33465a90a078fe69828df2ae24f65abade8542dfe4219737d9a0d0eaf3f7d1bc- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA6D21900385
- Bitcoin block existence check
- https://blockstream.info/api/block/960150