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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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8d135fb5bb35dfcfe7d530638da497d620cfdea8c4472851adc19d3409dc4f4. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7429ace7-7bb5-406a-b345-017892f8f8fa.json and https://artists.proofprofile.net/proofs/artist/7429ace7-7bb5-406a-b345-017892f8f8fa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
右も左も支配する頭は今日も肉を食いヨダレを垂らす。
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d101cbd1ecd801f32726a30bb0f0c8562e5aabffdf6eedfcc6fe78fe805e35. Chain 2 (Bitcoin): anchored in block 957720 (2026-07-12T15:26:09Z), 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/JPB590515014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb251ed443f29fd13e255ae46413c2aa1ca87dc279b5b7cbfd8b8ba73283085. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPB590515016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca80a1e4dbca5a245f8b17a52d779166e29493914d6ae5bd1c0845ab25ab7089. Chain 2 (Bitcoin): anchored in block 957730 (2026-07-12T16:41:26Z), 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/JPB590515017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1bddb82300096ce4827c1740c647fede3da207bfb095b193fa9f13df15235b6. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/JPB590515018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a85bc29618fba1e9e38b84703430ec992eec6043ed547e19108620998892641. Chain 2 (Bitcoin): anchored in block 957726 (2026-07-12T16:04:28Z), 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/JPB590515019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4861402a07c657c786b765e56856137c75cec6c86e28e67fee831234b8d1ec. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/JPB590515020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x364187f2c2ab2a612a558a96e68b026e17348ac457b091fe0976c158612e7110. 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/JPB590515021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa465a24176749de307b5245f63a9f6cb6b9b59a72368e8ece96f3949fc83e62c. Chain 2 (Bitcoin): anchored in block 958676 (2026-07-19T05:43:13Z), 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/JPB590515022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfead43f93bb021f1abe3ccc4a7d15f87d6db0b2110b518e323c66bcba3caf95. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/JPB590515023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd03bcb2c97e343ea936f3c58fcc3c3f8e7d0e84375bc3ed7095f0b2e564d26d5. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/JPB590515024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c4f4712e1813021a3a4d9755f0bfef3a1e5954b71dfc5d1f56cb2c76c23ee3. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/JPB590515025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25967f3262fab9f88d02df2ea55cb7537718fcefabd86d814c679f9012506fdd. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/JPB590515027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de462162fcd7bf48a55828b153610996002478aba5f4e44c263fb7a3d42e946. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/JPB590815002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe160d312e273f827f70c142e0113acfc451b55da36f91e546ab644abcf1702e3. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JPB590815003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540002910954f5127e9a77c5cdd2a8810ee0289d13465327a6af669965df0fa9. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/JPB590815004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb80492bead31dec630d2c1455edbd9b4f3ea100dc54712c9ef0853e4e59f1776. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/JPB590815006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd96bb23dd457b7b7475566f644e06287325ab0906adc586c85f893271cece90. Chain 2 (Bitcoin): anchored in block 959063 (2026-07-21T21:45:32Z), 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/JPB590815008.