ISRC USB960442107
Verified recording
USB960442107 is “The Ballad of Czolgosz” by Stephen Sondheim,
registered on the CopyrightChains blockchain with CopyrightID
0x5cd39e2a725297b733627ea10a1e66781ee05644a7d5f3a5cb7769d3f0e6fb5b and independently timestamped
in Bitcoin block 953515 on 2026-06-13.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USB960442107.
Recording identifiers
- ISRC
- USB960442107
- Title
- The Ballad of Czolgosz
- Artist
- Stephen Sondheim
- CopyrightID (CopyrightChains transaction hash)
0x5cd39e2a725297b733627ea10a1e66781ee05644a7d5f3a5cb7769d3f0e6fb5b
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-06-13T12:53:06+00:00
- Bitcoin block
- 953515
- Canonical record hash
sha256:2f78d665d8e4bb82d942985f8805d55fb43f842b4fc733effcf12291d0f9cfda- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USB960442107
- Bitcoin block existence check
- https://blockstream.info/api/block/953515
Full record
Track page: The Ballad of Czolgosz · Machine-readable JSON-LD