ISRC DEF058802721
Verified recording
DEF058802721 is “6 Songs Op. 13: 1. Die drei Schwestern” by Alexander von Zemlinsky,
registered on the CopyrightChains blockchain with CopyrightID
0x9a09d71e70f3d34305937b1896a2fdfc9c7ef00f0ff5723f4b76d58d520232d9 and independently timestamped
in Bitcoin block 960448 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF058802721.
Recording identifiers
- ISRC
- DEF058802721
- Title
- 6 Songs Op. 13: 1. Die drei Schwestern
- Artist
- Alexander von Zemlinsky
- CopyrightID (CopyrightChains transaction hash)
0x9a09d71e70f3d34305937b1896a2fdfc9c7ef00f0ff5723f4b76d58d520232d9
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T18:48:12+00:00
- Bitcoin block
- 960448
- Canonical record hash
sha256:dc092f88aa83f4d96cc8281ff4b63a85caf717ff0c7edaad5b8ffa5d2328aab4- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF058802721
- Bitcoin block existence check
- https://blockstream.info/api/block/960448
Full record
Track page: 6 Songs Op. 13: 1. Die drei Schwestern · Machine-readable JSON-LD