ISRC USUM71209873
Verified recording
USUM71209873 is “Cold.1” by Kanye West,
registered on the CopyrightChains blockchain with CopyrightID
0x6c78f26293e62fbd047c7cce47e3ef53461d618f56a20294cf1de1706ffbe887 and independently timestamped
in Bitcoin block 953513 on 2026-06-13.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM71209873.
Recording identifiers
- ISRC
- USUM71209873
- Title
- Cold.1
- Artist
- Kanye West
- CopyrightID (CopyrightChains transaction hash)
0x6c78f26293e62fbd047c7cce47e3ef53461d618f56a20294cf1de1706ffbe887
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-06-13T12:47:07+00:00
- Bitcoin block
- 953513
- Canonical record hash
sha256:17352cc2e827203b70c3e08f27640d146ddeb69c3904181b5d13f2200cd16038- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM71209873
- Bitcoin block existence check
- https://blockstream.info/api/block/953513