ISRC USVZX1111309
Verified recording
USVZX1111309 is “Lullaby” by William Hofeldt,
registered on the CopyrightChains blockchain with CopyrightID
0xf64490fa559e04a2163de8e5a726e519fa4abe3543b75942e70866665e2ce4ef and independently timestamped
in Bitcoin block 956304 on 2026-07-02.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USVZX1111309.
Recording identifiers
- ISRC
- USVZX1111309
- Title
- Lullaby
- Artist
- William Hofeldt
- CopyrightID (CopyrightChains transaction hash)
0xf64490fa559e04a2163de8e5a726e519fa4abe3543b75942e70866665e2ce4ef
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-02T03:55:08+00:00
- Bitcoin block
- 956304
- Canonical record hash
sha256:8d7d031559ec6cb62b1b5484f9f39c3cb23de66d70300ea55727506a4950ed67- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USVZX1111309
- Bitcoin block existence check
- https://blockstream.info/api/block/956304