ISRC USI4R0902721
Verified recording
USI4R0902721 is “Intro” by Marco Polo,
registered on the CopyrightChains blockchain with CopyrightID
0x3e47a937b9dcf8699da307baa24154f606939dd151365b4688e8c375341e0687 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/USI4R0902721.
Recording identifiers
- ISRC
- USI4R0902721
- Title
- Intro
- Artist
- Marco Polo
- CopyrightID (CopyrightChains transaction hash)
0x3e47a937b9dcf8699da307baa24154f606939dd151365b4688e8c375341e0687
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-08T03:20:19+00:00
- Bitcoin block
- 957118
- Canonical record hash
sha256:3e5e022be94fe2eae81ca00adacff16a1bf33cf4d1ba0d980f01dee35ef0ff6a- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USI4R0902721
- Bitcoin block existence check
- https://blockstream.info/api/block/957118