ISRC USQX92401594
Verified recording
USQX92401594 is “The Two Widows, JB 1:108: Polka” by Bedřich Smetana,
registered on the CopyrightChains blockchain with CopyrightID
0x66aa2fc106aebf490d4772c208ef724edd3fef06e270421f91e6660e30b9de49 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/USQX92401594.
Recording identifiers
- ISRC
- USQX92401594
- Title
- The Two Widows, JB 1:108: Polka
- Artist
- Bedřich Smetana
- CopyrightID (CopyrightChains transaction hash)
0x66aa2fc106aebf490d4772c208ef724edd3fef06e270421f91e6660e30b9de49
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-29T19:35:34+00:00
- Bitcoin block
- 960138
- Canonical record hash
sha256:30723ef53603b27eb274bd01c7b8b4bef1a4209e1c28ef4e683b5ceda4183217- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USQX92401594
- Bitcoin block existence check
- https://blockstream.info/api/block/960138
Full record
Track page: The Two Widows, JB 1:108: Polka · Machine-readable JSON-LD