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 0xa7808f87dac256eb6907069cef67fe2d3da67a5fb83f8d366b47cb20217dfaf5. Chain 2 (Bitcoin): anchored in block 954553 (2026-06-20T11:51:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/abdfd7d3-f1ca-45e4-aa81-72f4dd1c0f7d.json and https://artists.proofprofile.net/proofs/artist/abdfd7d3-f1ca-45e4-aa81-72f4dd1c0f7d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
デリシャスパーティ♡プリキュア ボーカルアルバム ～Welcome to Delicious Party～
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 0x6ada08ee2c3e618420ed5fefa602c388ac1d89d1ebddf6520132ceda09d16df3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPD602200206.
『デリシャスパーティ♡プリキュア』 ボーカルベスト ～Delicious Ambitious！～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ada08ee2c3e618420ed5fefa602c388ac1d89d1ebddf6520132ceda09d16df3. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPD602200206.
Cheers！デリシャスパーティ♡プリキュア ～Precure Quartet Ver.～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b071bcbc82e9da1dc4d530419d9b0f5a01fe239c56651d560dd3a75dc0bacc4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPD602200597.