The Raindrops were an American pop group from New York, United States, associated with the Brill Building style of 1960s pop. The group existed from 1963 to 1965 and consisted of Ellie Greenwich and
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 0x66f2e79c614cec342083b208225cef56c663c0f53b4a437ea7b082ff2d3b6dd7. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/92cf0597-e8c3-4e7d-8a9e-a9b12d59568b.json and https://artists.proofprofile.net/proofs/artist/92cf0597-e8c3-4e7d-8a9e-a9b12d59568b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).