ISRC DEF059205284
Verified recording
DEF059205284 is “5 Movements for String Quartet, Op. 5: 4. Sehr langsam” by Anton Webern,
registered on the CopyrightChains blockchain with CopyrightID
0x529d1c57a548a6fec8baadff27b1d8710a87e0070299b9582e93e042f81cdee5 and independently timestamped
in Bitcoin block 960418 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059205284.
Recording identifiers
- ISRC
- DEF059205284
- Title
- 5 Movements for String Quartet, Op. 5: 4. Sehr langsam
- Artist
- Anton Webern
- CopyrightID (CopyrightChains transaction hash)
0x529d1c57a548a6fec8baadff27b1d8710a87e0070299b9582e93e042f81cdee5
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T15:20:15+00:00
- Bitcoin block
- 960418
- Canonical record hash
sha256:d8fabe330d0e3fea0789661b4b0a040dc7db017567022b4976a03816726b1576- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059205284
- Bitcoin block existence check
- https://blockstream.info/api/block/960418
Full record
Track page: 5 Movements for String Quartet, Op. 5: 4. Sehr langsam · Machine-readable JSON-LD