The Southeastern Pennsylvania Transportation Authority, abbreviated as SEPTA, is a regional public transportation authority that operates bus, electric trolleybus, streetcar, light rail, light metro,
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 0x37e8613ad2877c13da7de68ee6d41227f21249c789a840018ec89b0658739bd7. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fc0053f1-4811-43fa-9d66-4b642e887204.json and https://artists.proofprofile.net/proofs/artist/fc0053f1-4811-43fa-9d66-4b642e887204.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).