Porta can refer to: People Porta (rapper) (born 1988), stagename of Christian Jiménez Bundo, a Spanish rap singer Porta (surname), surname Places La Porta, a commune in the Haute-Corse department
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 0x6e435ee49c60dd94a5691193b194a23bd846eb594377c79b1218d4c2813ec1e9. Chain 2 (Bitcoin): anchored in block 953999 (2026-06-16T20:20:58Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/31669403-dff4-4aa2-bb9b-546a3a024d11.json and https://artists.proofprofile.net/proofs/artist/31669403-dff4-4aa2-bb9b-546a3a024d11.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).