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 0x3e8c2e439d91ed89b7796433bdc30e09040b0c40a68c22609977d451b5b21af3. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bb91aefa-e35b-4078-9bbe-e6b645d04b3b.json and https://artists.proofprofile.net/proofs/artist/bb91aefa-e35b-4078-9bbe-e6b645d04b3b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
大好きな人が作ったカレーに大嫌いなピーマンが入っていた事件
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 0x264efaf06e7291a3b4485c785a02d3bb1f7417078d63cd4bb9a85e63acfa6780. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPI541100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c08cec3969477c2b7a2ec64e3b53f580c3f8e4db46026a54bcc648f70173f1. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPI541100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79728d9037a996f31b03a854184d39009e2be5d37b57efee95e4a3c31bf2b585. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPI541100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b1c478b09f84a147e3cee73bc98bbb33b1ad54a287eb158a40e158b74efeb4. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/JPI541100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca2787aeb2480b0395e16603dce230f4c2cff04e3d57ed370c71d3c92874996. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/JPI541100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa508be01209ada4a9a6003b1d35f508e5db455614697a623ddbcac7a36bf1e22. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T14:52:19Z), 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/JPI541100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e03d5c33a9afb7a17e7693b4d2f59e9ffccb8f5e99d488358c7856e2fe4cfb. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:01:59Z), 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/JPI541200092.