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 0xd428224ff8b28bfee5284d4be52a5abb2e8199837b07d7f15ab6f6f75f9a534b. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9157b5b8-b8c7-4845-a5a2-31c462fc9cab.json and https://artists.proofprofile.net/proofs/artist/9157b5b8-b8c7-4845-a5a2-31c462fc9cab.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
ソードアート・オンライン -インフィニティ・モーメント- Original Soundtrack
ソードアート・オンライン アリシゼーション リコリス Original Soundtrack
ソードアート・オンライン ラスト リコレクション Original Soundtrack
ソードアート・オンライン -ホロウ・フラグメント- Original Soundtrack
ソードアート・オンライン -ホロウ・リアリゼーション- Original Soundtrack
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 0xab641f4f30fe6b8569966c768aa4def066ae1b33e7e32edb1213a29735eec65f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPX832005153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe97c5c9cfa827f642400662c2d72b4c249425660d72fd97e93239b9aab4628e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPX832005183.