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 0xa9fccf2e626ab411bad5ec311759e015db5e428ba0e50e5b160391d794cc2463. 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/940adc44-2b8b-48a6-8fb2-ecde8113151e.json and https://artists.proofprofile.net/proofs/artist/940adc44-2b8b-48a6-8fb2-ecde8113151e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
華月怪改絵巻 ～かげつあやかしあらためえまき～
雨月怪改遊戯 ～うづきあやかしあらためゆうぎ～
発散解放ダイバージェンス／裏切りの残光
発散解放ダイバージェンス (feat. 鏡音リン)
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 0x99b415d9086564324e59ca4b74c06f64b14212c539f19ff20a68853de1e596dd. 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/JP92Q2401484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3daedf8e8e880e71d9e523bcb8753511ef00924a69523972ed929a41fc049146. 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/JP92Q2401485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf8730b55066de4ce8c473b6727470e7bfc6f4885ab6972933b09c13a92e195. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:03:48Z), 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/JP92Q2501979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x739844485c299ac030276dcfa67722831253487d4546a42a1c73395c50cde747. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:03:52Z), 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/JP92Q2502320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e5df43d5e727e3ab0a72871ec4f92d99167ae70d35f026ef289e88616b5fe9. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JP92Q2502322.