right|thumb|220px|Wild angelica (Angelica sylvestris) from Thomé, 1885 Angelica is a genus of about 90 species of tall biennial and perennial herbs in the family Apiaceae, native to temperate and sub
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 0x00aeeb75064ff6348321b5ae4a290fda0389152f97443e80f6f695538c397279. 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/4bd6808f-b627-483f-bcee-ec7cee51f211.json and https://artists.proofprofile.net/proofs/artist/4bd6808f-b627-483f-bcee-ec7cee51f211.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
戦場のメリークリスマス/Merry Christmas, Mr. Lawrence
めぐる季節（ジブリ映画「魔女の宅急便」）
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f258288c567ba3dfdf1345ad1573a187b2996734b8f7c77d0823f2d46d03a06. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:56:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPE562116811.