ISRC USSM19701943
Verified recording
USSM19701943 is “Concerto No. 4 for Guitar and Orchestra - Dedicated to John Williams "Concerto de Toronto": Variation II” by Leo Brouwer,
registered on the CopyrightChains blockchain with CopyrightID
0xc4356997a168b9d649fabdd9b4570ec08bcdcbb0beb6a90f3e72ccede4be7681 and independently timestamped
in Bitcoin block 960314 on 2026-07-30.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19701943.
Recording identifiers
- ISRC
- USSM19701943
- Title
- Concerto No. 4 for Guitar and Orchestra - Dedicated to John Williams "Concerto de Toronto": Variation II
- Artist
- Leo Brouwer
- CopyrightID (CopyrightChains transaction hash)
0xc4356997a168b9d649fabdd9b4570ec08bcdcbb0beb6a90f3e72ccede4be7681
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-30T21:00:46+00:00
- Bitcoin block
- 960314
- Canonical record hash
sha256:bb9dc55ede97800ad69ba6df357416e2725778f3148bb19e21756cbb57cdcf5f- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19701943
- Bitcoin block existence check
- https://blockstream.info/api/block/960314
Full record
Track page: Concerto No. 4 for Guitar and Orchestra - Dedicated to John Williams "Concerto de Toronto": Variation II · Machine-readable JSON-LD