The Cree are a North American Indigenous people, numbering more than 350,000 in Canada, where they form one of the country's largest First Nations macro-communities. There are numerous Cree peoples an
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 0x82f84006ff27faf4f34914efc6bb151f0109bbe500ff04c33411380f6161eaae. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3aeff8ca-0c07-423f-8ea2-6ac1e5733f08.json and https://artists.proofprofile.net/proofs/artist/3aeff8ca-0c07-423f-8ea2-6ac1e5733f08.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).