ISRC USB770400064
Verified recording
USB770400064 is “Yellow Cup” by Marcus Johnson,
registered on the CopyrightChains blockchain with CopyrightID
0xf487ac0fa38e50d82a011fe7e96c259aaa6877ac95f5baed963428b9068ce20c and independently timestamped
in Bitcoin block 956304 on 2026-07-02.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USB770400064.
Recording identifiers
- ISRC
- USB770400064
- Title
- Yellow Cup
- Artist
- Marcus Johnson
- CopyrightID (CopyrightChains transaction hash)
0xf487ac0fa38e50d82a011fe7e96c259aaa6877ac95f5baed963428b9068ce20c
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-02T03:55:08+00:00
- Bitcoin block
- 956304
- Canonical record hash
sha256:7761b1427e24b0878c8da0e75a3782661c596d17f22853c54a17687983481e50- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USB770400064
- Bitcoin block existence check
- https://blockstream.info/api/block/956304