PJM may refer to: Pacific Journal of Mathematics PixelJunk Monsters, a PlayStation Network game for the PlayStation 3 Punjab Janata Morcha (Punjab Popular Front), a Sikh political party in the state
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 0x61af74f0bc82b05882a5607c911ea28bd5682aea7173a8fa546da6ad7ea8b883. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/73aaa5e7-e19b-445b-a3fd-e7c182dc7678.json and https://artists.proofprofile.net/proofs/artist/73aaa5e7-e19b-445b-a3fd-e7c182dc7678.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).