ISRC USPO19800170
Verified recording
USPO19800170 is “The Letter” by Mack 10,
registered on the CopyrightChains blockchain with CopyrightID
0xce4d6616b47d974042b7f2585faec7b5b2b886a39e0bd182b6e8a2ebe9b79f14 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/USPO19800170.
Recording identifiers
- ISRC
- USPO19800170
- Title
- The Letter
- Artist
- Mack 10
- CopyrightID (CopyrightChains transaction hash)
0xce4d6616b47d974042b7f2585faec7b5b2b886a39e0bd182b6e8a2ebe9b79f14
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-02T03:55:08+00:00
- Bitcoin block
- 956304
- Canonical record hash
sha256:7c0a1fa19e7b332fc2c054797d0254e4fb9adc8cbbd5ffc75f0edb71e477dd02- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USPO19800170
- Bitcoin block existence check
- https://blockstream.info/api/block/956304