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 0x1b2ea28e44e5e8aa91eeb2dfa8f7a85983f012d627d04b7c39f55ae48cc6a298. 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/c16d4283-25f7-4348-b350-ca298e19b654.json and https://artists.proofprofile.net/proofs/artist/c16d4283-25f7-4348-b350-ca298e19b654.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x795d42de3506c0267b7d1041dc98ebd4a1cffebd058c8ec1e3e07679d8fc230c. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-20T12:09:43Z), 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/JPT551900108.
TVアニメ「ケムリクサ」エンディングテーマ「INDETERMINATE UNIVERSE」
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x795d42de3506c0267b7d1041dc98ebd4a1cffebd058c8ec1e3e07679d8fc230c. 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/JPT551900108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f56884dcaedc9c9c99abb950936dd28f385a9bf176ac52431fa5a5674d485e. 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/JPT551900236.
Sayonararetronewworld (feat. HATSUNE MIKU)
UltraHardAttacks of OddMusiK (feat. HATSUNE MIKU)
Gokurakuchou -bird of paradise- (feat. KAGAMINE RIN)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69daf3fc8b38810eaf2a386ab0417e512c904ca9ff015d066bdb65d26769a5d5. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/TCJPT2256299.
Shinkaisyouzyo -deep sea girl- (feat. HATSUNE MIKU)
Anoryuuwoutsutoiunonara (feat. KAGAMINE RIN)
Tengaku -Soukyoku- (feat. KAGAMINE RIN & KAGAMINE LEN)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b962275cf35a7f005df9f3a515a1ac75db9f3a9537e5316006c52b4212e6033. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPZ922400563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d5c887f7c78eefe0ccb01d8343c8a247556d2eb331ed4bd0d2a70bc4e8d8fd. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPZ922400565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d5a61b1f203f17896ed516295ea1fc3f367cc29d8b8710381f6f9cf264e3ae. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPZ922400566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd538d0ec3e25ef13ace9f4551577dd1dc867d312966cb0a63298df37fe6fd004. 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/JPZ922400567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d321467748bc1bb98d0663428418e55f3ac93993d9ce9491023fcee0c5a2aa. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPZ922400568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda706a9b901f038aa7b4d004e4a8193da589eebe895c864c0f646e989e6d14f4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPZ922400569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00c372c77527d69103c9132ad2ec78fe7cfcef77af8e34d1aad95048a2bb941. 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/JPZ922400572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1213bc08ea6fc85b08e4418054b6824609927a013b87a491c9255f57b3b3ce2. 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/JPZ922400573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6ff1748f4f238de97c366784f16a3d117a73e8cbb3cb9caf92229a4849909e. 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/JPZ922400574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2e59904993e800b34c52b15185e2402564ed701eceda1c9ccf92367140fb29. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPZ922400576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de71c989fcb1c964a4ea377169467436cdea7dd2cb14fa737e3a0ecce14a9b6. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/JPZ922400564.
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 0x9b36b586d7d8fe390533a3694f4bc008cd233813ff5221a25e9f4eb3814c814b. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/JPZ922400570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08481dff790291972fd3ba11893a4c3796544155755eee3553bd51e7954ca56. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/JPZ922400571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c3387c3de5b93d324043a6d9eae46150f1d194826daf9fd1ca5c0a7a296a28. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/TCJPC2409522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c5a6e4c952e30eb210d2bc26568674453c4dcbd45827bb908e659a86a833d88. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCJPE2538778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449f0354ed696e4a6e2bf6a09702cd1a036298a47c1c2fdc6821314e6e320cc3. 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/JPW561812069.
Kagaminext feat. 鏡音リン、鏡音レン ―10th ANNIVERSARY BEST―
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468b0a893a9e7700600e431908e6e4328db66a5b4bda414408db6972c21ca7cf. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPC231700379.
クローバークラブ -MIKUNOPOLIS in LOS ANGELES Live-
MIKUNOPOLIS in LOS ANGELES “はじめまして、初音ミクです”
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12cf4a4bd6814509cbd5b505be23aeeba4c7a224eb34f999b4b1c15085f15896. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPE561301072.