William Howard Doane (February 3, 1832 – December 24, 1915) was a manufacturer, inventor, hymn writer, choral director, church leader and philanthropist. He composed over 2,000 church hymns. More th
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 0x83b39737e42470f6f5654055761e3e15fd1955a757c4d1a241cf27d5fa3563f5. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d148cc8c-7064-40bf-a7a5-b283c674ab5a.json and https://artists.proofprofile.net/proofs/artist/d148cc8c-7064-40bf-a7a5-b283c674ab5a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).