Quartetto Energie Nove is a string quartet founded in 2008 in Lugano, Switzerland. The group is composed of principal players of the Orchestra della Svizzera Italiana. They have performed at a number
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 0xa857a01d5650942d2c2c119b5f051cad93c9c14284aee1a6a8d55937e1e6749b. Chain 2 (Bitcoin): anchored in block 954134 (2026-06-17T19:41:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7fbf4758-4081-46df-9555-2bcde042ae23.json and https://artists.proofprofile.net/proofs/artist/7fbf4758-4081-46df-9555-2bcde042ae23.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).