ISRC USDY41983719
Verified recording
USDY41983719 is “Practical Vocal Method: Lesson II Intervals of the Fourth in A-Flat Major” by Nicola Vaccai,
registered on the CopyrightChains blockchain with CopyrightID
0x3870d912323d38e22f73b9b085766c1f38251d44cd23f163e34adf3f811b2362 and independently timestamped
in Bitcoin block 960397 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDY41983719.
Recording identifiers
- ISRC
- USDY41983719
- Title
- Practical Vocal Method: Lesson II Intervals of the Fourth in A-Flat Major
- Artist
- Nicola Vaccai
- CopyrightID (CopyrightChains transaction hash)
0x3870d912323d38e22f73b9b085766c1f38251d44cd23f163e34adf3f811b2362
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T12:24:41+00:00
- Bitcoin block
- 960397
- Canonical record hash
sha256:7c75c3b59b5a925623437a14681de0647af39516c66a4fb7ea69d53fb59e06d0- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDY41983719
- Bitcoin block existence check
- https://blockstream.info/api/block/960397
Full record
Track page: Practical Vocal Method: Lesson II Intervals of the Fourth in A-Flat Major · Machine-readable JSON-LD