ISRC USUR19700519
Verified recording
USUR19700519 is “Harmonica Musing” by John Popper,
registered on the CopyrightChains blockchain with CopyrightID
0x22311880ae77a3daa835f6f38c36f8ee0a80121f822fe83bad0f3eeb553c78d4 and independently timestamped
in Bitcoin block 953520 on 2026-06-13.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUR19700519.
Recording identifiers
- ISRC
- USUR19700519
- Title
- Harmonica Musing
- Artist
- John Popper
- CopyrightID (CopyrightChains transaction hash)
0x22311880ae77a3daa835f6f38c36f8ee0a80121f822fe83bad0f3eeb553c78d4
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-06-13T13:32:09+00:00
- Bitcoin block
- 953520
- Canonical record hash
sha256:ca15b79a5ecd5a54b8d3fe639c85ca1400057efef899b1f3a82b1ce9eeddc251- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUR19700519
- Bitcoin block existence check
- https://blockstream.info/api/block/953520