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 0x5a78e3a12eb12fad497e0a418bd39f53c6c58d244ff8c208a079d24d7db415cc. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fe351fba-fe21-4bb4-96ac-4ca077bb03e6.json and https://artists.proofprofile.net/proofs/artist/fe351fba-fe21-4bb4-96ac-4ca077bb03e6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
コンビニエンスボーイ / インソムニアガール
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 0xa5f514b1e9c4f37e45a9fc29ea6af9c6ee0ccbface4cb121dddcbf7a86c7238c. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/JPS801855893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe71ba9f7850c195872de2bbc1f4ac3ea0d64a2dd408dd85d20079d8d7e5d89a0. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T11:02:34Z), 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/JPS801942881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1edc8e829b9c5dcf961bfd5e4e88841e4ed0582b63cb0059e4cd5c5ac44c2ed. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPS801943280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda1e7a374203219e5813759fcfd505eba8b7344a7159d9a655999a6843b55326. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:57:45Z), 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/JPS801943651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4177680f431879156d1f890262fddbed8cb0c25fa8132336d14a63bfa3093e98. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPS801960631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f9a83c21d06a21d2dc126721b4c50ba39ab0f81acbbb62307175d5a84a7957e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPS802355642.