Lulu or Lu Lu may refer to: Companies LuLu, an early automobile manufacturer Lulu.com, an online e-books and print self-publishing platform, distributor, and retailer Lulu Hypermarket, a retail ch
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 0x628304982d3ca253fda4db58a234aefff7ae2f241bad572c73ff68fa771f5ec1. 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/a8a80a6f-e17b-47da-ab56-508f1d5d873f.json and https://artists.proofprofile.net/proofs/artist/a8a80a6f-e17b-47da-ab56-508f1d5d873f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).