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 0x1f5f56832dd08d300512c0ae61fc4c7d6e29c6ac3eb7a7a1d9e50acb5251dbbb. 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/20731329-82e6-485c-959c-93f84fa9507d.json and https://artists.proofprofile.net/proofs/artist/20731329-82e6-485c-959c-93f84fa9507d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xdcf91352db97512a95490b4a21081730912fa52176c9eeae62c98cb9a114ea98. 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/JPVI02402447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966bbf72a0a87fefdf0878a891229f65854782192a62686a0035986bc631325c. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/JPVI02402448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f58218f882232984357ef28fcdb0c6eb4f86fb77c6cd8210b2d3dc53a54a51. 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/JPVI02402450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f99241d81e8f0f424dd5130260341f1144de0952853ac448661420dd2757b5. 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/JPVI02402451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24fa7949b64024249ca00b51e745d881a6432c8ee6b2b323f569f98741180a70. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/JPG532002140.
Wah Wah World (feat. Hatsune Miku & Kagamine Rin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a5fbe09a944c0992257e62be8205ff09d0f727885629a096be02ca2b5f735cf. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/JPG532002142.
Ready Steady (feat. Hatsune Miku, Kagamine Rin, Kagamine Len)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a8f1e5ed0076dae54ec8675b2cf090eb7661a33e0f0b6c4ff6b166bcaf0852. 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/JPG532002151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a8f1e5ed0076dae54ec8675b2cf090eb7661a33e0f0b6c4ff6b166bcaf0852. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPG532002151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0347740b0df3eb6aa80e5509113b73217d37c21f093fd700ede82a99ce478681. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/JPG532102928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x617d5ec7aa996829b04a49f92241be90d0c04e469827b1e25c118344666230d0. 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/JPG532102931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a15e33cb425255c4c440ab7449bd8b74c017ae60baaa123be3940dc6b7760a9. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/JPG532203426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a15e33cb425255c4c440ab7449bd8b74c017ae60baaa123be3940dc6b7760a9. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T07:27:32Z), 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/JPG532203426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c7d1eff459d0f05f0f709bc646d495ad8c76dd0aa25efe4131a114b7d70a75. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/TCJPB2400715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c7d1eff459d0f05f0f709bc646d495ad8c76dd0aa25efe4131a114b7d70a75. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/TCJPB2400715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0af9abaa8d34f1aa9598350bc5d4c285a4c9c63e4626f2351602115061f9079. 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/JPU902404724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8aefc42cdbbc39ee3219333c875fa6a77091d5cb5493873533269f3416194c0. 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/JPY392200339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6a5bbe5ed95a84c207154d97c8cc84f3861d80ccaab9748748fdaa2ab1fdbe. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPU902401260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ca2d02268561109837ace1fbaec08540c24a8b2b234ad754d47de664765445. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPU902401954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc86d1e4110867ab81415ae91ed87b161155511c79f754dba54a1ade9845718. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPU902401960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf078e8621210d638a4bacb34ba6dc2423e36b068250b3b21946bc4b879c09b24. 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/JPU902401961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce1cfcce08e3a048ebc73e02532b830c7a938f614657c6ae12b4f7ddf4752397. 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/JPU902401261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b5a27979c208b581833b6185530aa70c7bd10f1b556104e7fd41cdadf35132. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPKI01819663.
おこちゃま戦争-初音ミク「マジカルミライ」10th Anniversary Live- (feat. 鏡音リン&鏡音レン)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba3ccacc916edb83b8de5cc3525114f7922060676a96d915b54a6f836c45f0c7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JP92Q2400661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a3fe35202367a509808fab8cf1afe9b4546ab85eba3bc249ef925542e9e2b2. 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/JPPO02203757.