Black Moon may refer to: Black moon, one of four astronomical events involving new or dark moons Black Moon (person) (c. 1821–1893), Lakota (American Indian) headman Black Moon or Lilith (fictitio
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 0xf212d5ee79447d6962d00ab31bae6307b2265e379108ba0df4e01a2f2528e4b8. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/89fa73e7-749d-4910-8298-e8ab286bdeb4.json and https://artists.proofprofile.net/proofs/artist/89fa73e7-749d-4910-8298-e8ab286bdeb4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).