ISRC USB760400357
Verified recording
USB760400357 is “Letters” by Stroke 9,
registered on the CopyrightChains blockchain with CopyrightID
0x5f53a4f811f7855a949a8fa6b3d3b256528f39d4a5db451e0005dd62506a210f and independently timestamped
in Bitcoin block 960138 on 2026-07-29.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USB760400357.
Recording identifiers
- ISRC
- USB760400357
- Title
- Letters
- Artist
- Stroke 9
- CopyrightID (CopyrightChains transaction hash)
0x5f53a4f811f7855a949a8fa6b3d3b256528f39d4a5db451e0005dd62506a210f
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-29T19:35:34+00:00
- Bitcoin block
- 960138
- Canonical record hash
sha256:d3ff93bdf78f36fcaf99bfb1d8eba187ea0a42e82fc69cd466eca584d2c6224d- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USB760400357
- Bitcoin block existence check
- https://blockstream.info/api/block/960138