Lynda Sayce is a British lutenist and theorbo player, known also as a scholar of musical history and a writer on the history of the lute and theorbo. Brought up in Sandwell where she trained in the y
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 0xbd29f215ab117ef79afcdd76b9fbca88a033452af19b6863890de9b0ef0601a3. Chain 2 (Bitcoin): anchored in block 953721 (2026-06-15T01:12:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8a8ea98f-27f1-4fe0-9142-286bdc7c332c.json and https://artists.proofprofile.net/proofs/artist/8a8ea98f-27f1-4fe0-9142-286bdc7c332c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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