ISRC US4BP1426703
Verified recording
US4BP1426703 is “String Quartet No. 3 "Grido"” by Helmut Lachenmann,
registered on the CopyrightChains blockchain with CopyrightID
0x0337707f1b33ff5259575dedcae7f94c9d71c68eea6662cc0fe2505d43068e2a and independently timestamped
in Bitcoin block 957118 on 2026-07-08.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4BP1426703.
Recording identifiers
- ISRC
- US4BP1426703
- Title
- String Quartet No. 3 "Grido"
- Artist
- Helmut Lachenmann
- CopyrightID (CopyrightChains transaction hash)
0x0337707f1b33ff5259575dedcae7f94c9d71c68eea6662cc0fe2505d43068e2a
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-08T03:20:19+00:00
- Bitcoin block
- 957118
- Canonical record hash
sha256:1df27788d6032b2fc407295189ec3179f18daf2f7ea1cca99a728abc5d23723f- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4BP1426703
- Bitcoin block existence check
- https://blockstream.info/api/block/957118
Full record
Track page: String Quartet No. 3 "Grido" · Machine-readable JSON-LD