The Sandman is a mythical character originating in Germanic and Scandinavian folklore. He visits children in the evening, sprinkles sleep-inducing sand into their eyes and brings dreams. In the mornin
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 0x18d2507b8da96d03a76f81e4b9471e873331266a69ab9805298be623eed61eb8. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/37c0571a-b8ad-4cc3-82d3-75fb9c2475d2.json and https://artists.proofprofile.net/proofs/artist/37c0571a-b8ad-4cc3-82d3-75fb9c2475d2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).