ISRC USCHR1376053
Verified recording
USCHR1376053 is “I Don't Know When” by Hal Harris,
registered on the CopyrightChains blockchain with CopyrightID
0x64d0291a3e96cff7fa4d4d546f61c4fe1d1cbe6d846c41dade100fe0ffaae432 and independently timestamped
in Bitcoin block 960273 on 2026-07-30.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCHR1376053.
Recording identifiers
- ISRC
- USCHR1376053
- Title
- I Don't Know When
- Artist
- Hal Harris
- CopyrightID (CopyrightChains transaction hash)
0x64d0291a3e96cff7fa4d4d546f61c4fe1d1cbe6d846c41dade100fe0ffaae432
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-30T15:42:38+00:00
- Bitcoin block
- 960273
- Canonical record hash
sha256:952aa71a3f3ce859149a7bbb28ca02f54fe72a3d6c30e1b4ed7f856d8021ce21- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCHR1376053
- Bitcoin block existence check
- https://blockstream.info/api/block/960273