ISRC USSM19701945
Verified recording
USSM19701945 is “Concerto No. 4 for Guitar and Orchestra - Dedicated to John Williams "Concerto de Toronto": Variation IV” by Leo Brouwer,
registered on the CopyrightChains blockchain with CopyrightID
0xd974fb54976dabcd9f4e9f83b48f94b0a0eb17b012f2054071ba26de3bbfb632 and independently timestamped
in Bitcoin block 960478 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19701945.
Recording identifiers
- ISRC
- USSM19701945
- Title
- Concerto No. 4 for Guitar and Orchestra - Dedicated to John Williams "Concerto de Toronto": Variation IV
- Artist
- Leo Brouwer
- CopyrightID (CopyrightChains transaction hash)
0xd974fb54976dabcd9f4e9f83b48f94b0a0eb17b012f2054071ba26de3bbfb632
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T23:30:38+00:00
- Bitcoin block
- 960478
- Canonical record hash
sha256:8e0713654a44c1faa645eeda0c898b3906d981c0d026403c1c6b4df4f9d58148- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19701945
- Bitcoin block existence check
- https://blockstream.info/api/block/960478
Full record
Track page: Concerto No. 4 for Guitar and Orchestra - Dedicated to John Williams "Concerto de Toronto": Variation IV · Machine-readable JSON-LD