ISRC USSM11400280
Verified recording
USSM11400280 is “Once Upon a Summertime (La valse des Lilas)” by Michel Legrand,
registered on the CopyrightChains blockchain with CopyrightID
0x3953a08d4f42d1bef494d11866fe067fc2bf93beb6631b7e7c083c3c23fabba4 and independently timestamped
in Bitcoin block 960294 on 2026-07-30.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11400280.
Recording identifiers
- ISRC
- USSM11400280
- Title
- Once Upon a Summertime (La valse des Lilas)
- Artist
- Michel Legrand
- CopyrightID (CopyrightChains transaction hash)
0x3953a08d4f42d1bef494d11866fe067fc2bf93beb6631b7e7c083c3c23fabba4
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-30T18:46:00+00:00
- Bitcoin block
- 960294
- Canonical record hash
sha256:4d0f18e8bd97409612bc5153a3d3a4b5f80a6381fdd52a59091622cd2488d049- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11400280
- Bitcoin block existence check
- https://blockstream.info/api/block/960294
Full record
Track page: Once Upon a Summertime (La valse des Lilas) · Machine-readable JSON-LD