ISRC DEF057931021
Verified recording
DEF057931021 is “Werther / Act 2: "Si Käthchen reviendra"” by Jules Massenet,
registered on the CopyrightChains blockchain with CopyrightID
0x1d556e1c3ed33bfb2c4a22aad51d3589228df7ad67075c32c57008041636bbdb and independently timestamped
in Bitcoin block 960468 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057931021.
Recording identifiers
- ISRC
- DEF057931021
- Title
- Werther / Act 2: "Si Käthchen reviendra"
- Artist
- Jules Massenet
- CopyrightID (CopyrightChains transaction hash)
0x1d556e1c3ed33bfb2c4a22aad51d3589228df7ad67075c32c57008041636bbdb
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T21:25:57+00:00
- Bitcoin block
- 960468
- Canonical record hash
sha256:44efc5162e3a87a7338b418d1927ad79ec71e5ff26ff69023452e9c94f64aea6- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057931021
- Bitcoin block existence check
- https://blockstream.info/api/block/960468
Full record
Track page: Werther / Act 2: "Si Käthchen reviendra" · Machine-readable JSON-LD