HALO, halo, halos or haloes may refer to: Most commonly Halo (optical phenomenon), with ice crystals Halo (religious iconography), a ring of light around the image of a head Halo (franchise), a sc
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 0x52d323773936f45e5c4ee51da14c62060ea689c6aac63218f44570a5276401f1. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a737627d-df3c-401f-88ff-d7c9095550cb.json and https://artists.proofprofile.net/proofs/artist/a737627d-df3c-401f-88ff-d7c9095550cb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).