ISRC GBF077440530
Verified recording
GBF077440530 is “Madama Butterfly, Act II: Coro a bocca chiusa "Humming Chorus"” by Giacomo Puccini,
registered on the CopyrightChains blockchain with CopyrightID
0x50eee09eadf65cba6ac0fd857f6da6340fe79e64700f3ca9b637525540c22bd6 and independently timestamped
in Bitcoin block 953513 on 2026-06-13.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF077440530.
Recording identifiers
- ISRC
- GBF077440530
- Title
- Madama Butterfly, Act II: Coro a bocca chiusa "Humming Chorus"
- Artist
- Giacomo Puccini
- CopyrightID (CopyrightChains transaction hash)
0x50eee09eadf65cba6ac0fd857f6da6340fe79e64700f3ca9b637525540c22bd6
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-06-13T12:47:07+00:00
- Bitcoin block
- 953513
- Canonical record hash
sha256:751d5dca452768be5e03802bf52f0b095f5a4d3ed80ff10801c21fb81a78c5b0- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF077440530
- Bitcoin block existence check
- https://blockstream.info/api/block/953513
Full record
Track page: Madama Butterfly, Act II: Coro a bocca chiusa "Humming Chorus" · Machine-readable JSON-LD