Mario Rossy is a jazz bassist, composer, and educator. Biography In 1988, Rossy was a bassist for Tete Montoliu's And Orquestra Taller De Musics recording. In 1993, Rossy played on the albums New Yor
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 0x77ad935a83a6778da84b93ed030b29cabf0efbb8a4c38f7f9f3d3211a0dfe63c. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2ba24719-e547-4402-94f9-a8b7811b9690.json and https://artists.proofprofile.net/proofs/artist/2ba24719-e547-4402-94f9-a8b7811b9690.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).