ISRC HKI199925507
Verified recording
HKI199925507 is “Fidelio, Op. 72, Act II: Duet. O namenlose Freude! (Leonore, Florestan)” by Ludwig van Beethoven,
registered on the CopyrightChains blockchain with CopyrightID
0x255ecc7fb6b128390d3cf7f33e5612e6a6b4fb0d49cc6f659bb99779f5f831d1 and independently timestamped
in Bitcoin block 960185 on 2026-07-30.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199925507.
Recording identifiers
- ISRC
- HKI199925507
- Title
- Fidelio, Op. 72, Act II: Duet. O namenlose Freude! (Leonore, Florestan)
- Artist
- Ludwig van Beethoven
- CopyrightID (CopyrightChains transaction hash)
0x255ecc7fb6b128390d3cf7f33e5612e6a6b4fb0d49cc6f659bb99779f5f831d1
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-30T01:32:48+00:00
- Bitcoin block
- 960185
- Canonical record hash
sha256:f5ff0e36be4f569f55bf2f1e4153a9dd47ae9d92ba9f3565b0b77462ebbc7a89- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199925507
- Bitcoin block existence check
- https://blockstream.info/api/block/960185
Full record
Track page: Fidelio, Op. 72, Act II: Duet. O namenlose Freude! (Leonore, Florestan) · Machine-readable JSON-LD