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 0xe969f8a9ac9fb8a638a0fad024849c4e1fb73f557544883efa4b0590fce68172. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9044306a-9ffd-4cb1-975b-dcf7c6d7617e.json and https://artists.proofprofile.net/proofs/artist/9044306a-9ffd-4cb1-975b-dcf7c6d7617e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Shi o Tsukasadoru Kami no Na o Motsu Mono
Tokei no Hari wa Seiya o Kizamu youni Mawaru (2014Ver.)
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 0xe8cde81421c23bd11567c1fb454b22491eaf3d0a5e9f0c3f5be8d715a95dde04. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCJPN2054926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58dc07a7468bcffbd9c84a38ad077a56a8d618eb6bb0a2109693cc4c94c93bbb. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCJPO2160293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82decc08b81f1bc73a24e0dd43043edd2fa871a1bf73ffb0d6df8fc85695276c. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T12:43:06Z), 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/TCJPR2272813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x790974995e5f1a0251b8f07c0914d87cac970965a3bb0a875d0cbb50191d5892. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPPC01902444.