DSP may refer to: Computing Digital signal processing, a mathematical manipulation of an information signal Digital signal processor, a microprocessor designed for digital signal processing Dynam
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf26f482bb29aafce2791edffa3ce331ab2bc1db8bb27c9209a7c1a8bda5eaa97. Chain 2 (Bitcoin): anchored in block 954615 (2026-06-20T22:44:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c55e8e7f-c3fb-4483-86ad-8c8f10057f56.json and https://artists.proofprofile.net/proofs/artist/c55e8e7f-c3fb-4483-86ad-8c8f10057f56.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).