Dafne (, Italian for "Daphne") is the earliest known work that, by modern standards, could be considered an opera. The libretto by Ottavio Rinuccini, based on an earlier intermedio created in 1589, "
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf54497952daadff8df31ed94136b197e0b7678b3729d862f6b5f8a0f97026013. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4a625a69-b25a-457a-956b-e02efc3708a7.json and https://artists.proofprofile.net/proofs/artist/4a625a69-b25a-457a-956b-e02efc3708a7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Elevator (Ground Floor) [Club Domani Remix]
Elevator (Top Floor) [BPTSM & BIL3N3RA Remix]