ISRC DEF057003561
Verified recording
DEF057003561 is “4 Lieder, Op. 2: No. 1, Schlafen, schlafen” by Alban Berg,
registered on the CopyrightChains blockchain with CopyrightID
0x2c06d68453a1a69e2b6efc975edb6774c9ffd5499679464fe0ddf079b02b559b and independently timestamped
in Bitcoin block 960455 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057003561.
Recording identifiers
- ISRC
- DEF057003561
- Title
- 4 Lieder, Op. 2: No. 1, Schlafen, schlafen
- Artist
- Alban Berg
- CopyrightID (CopyrightChains transaction hash)
0x2c06d68453a1a69e2b6efc975edb6774c9ffd5499679464fe0ddf079b02b559b
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T19:53:13+00:00
- Bitcoin block
- 960455
- Canonical record hash
sha256:89727d9d35d22bcaaa59f72f1861cc5a13677a6cb3d023edc9d204f8db5fbb4a- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057003561
- Bitcoin block existence check
- https://blockstream.info/api/block/960455
Full record
Track page: 4 Lieder, Op. 2: No. 1, Schlafen, schlafen · Machine-readable JSON-LD