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 0xce27855124843139a3a3d46a1b9433cf964799a2fad5b24c9bbb54dcad3a33a8. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d97ef36e-8680-4ca0-9368-45f8d97f4e70.json and https://artists.proofprofile.net/proofs/artist/d97ef36e-8680-4ca0-9368-45f8d97f4e70.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
SDガンダム外伝 騎士ガンダム物語 オリジナル・サウンドトラック
フェイゼズ・オブ・ザ・ムーン ～ ウクレニカ・ミーツ・ムーンライダーズ
オーロラ見るまで眠れない／マスカット・ココナッツ・バナナ・メロン
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 0x69684369b1fa5e91a10e863cad81388a945b2b90f04ce37b51ed71f96989a710. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/TCAFK2100207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d1430d5e5a168e79305982ff967217b6465a2557804bdcce98fcd27ee10c504. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TCAFK2100208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44dbb29195ec15d886b21d6baa75e3c6eab2d7542e5f0c773d43bb130a15ffcb. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/TCAFK2100218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf50747670d3baf8c23648768f4b1032b964f92df20adf2a2c548d61319f4ceb0. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:47:41Z), 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/TCAFK2100220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf65e1e6f2190a8d9e9432103b31d45e34e367e78bc46acd74636751b9fb0a17a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCAFK2100223.