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 0xc6a57d17dce0a513e00ab1009e354df277e74cb96cc6e2399dab9e801445fc16. 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/4a1b95a3-065d-4b64-8e7a-3afd9b2dc30c.json and https://artists.proofprofile.net/proofs/artist/4a1b95a3-065d-4b64-8e7a-3afd9b2dc30c.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 0x7cc3d0b154e2849748108e90030b0523a5a3f728f85f4263a2e7e10c37ef94b5. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/JPU901501072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7132d146fb65d2b43a245a01e2b04e9dc512a084afd54a0dcb81faedd5238c09. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/JPU901501085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49475c3dd974d036ad3d9d1c6635ecfab3e043f3c54329d0a25fcd662e63d392. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/JPU901501086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf61100462a08688e26016e6171f113671ba285079fb3a08422174fb95a0b7950. 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/JPU901501090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d33f4b3dd474085b5010d5928f33b9dddd5b653291fbde742b545e9fdc07796. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:07:35Z), 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/JPU901501091.
山猿LIVE（バイノーラルレコーディング）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f1fb36c6c86d03a37cebd2a59a0a29f719c7a4f3c3d20b188f85fab8ea8e03e. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/JPU901503189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ceab9666dec9d88e2414a91fc935ac143d3fc772e2caf0d3d668849ce245d6b. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/JPU901503495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ada1c3c6fe7ff0ec5a8749b2bc1c212b92f936c67df9b00491d514d156b3eef. 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/JPU901602509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7455bdedaa658a6a112d9475f3331a059aff2d0a934c526d26619acd856e7c7a. 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/JPES01201601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c628cb6a9cb470216f127dfcf3bba6232b4acb060a9d32c3068272044b0242. 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/JPES01102261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a22aba114eb989fbbcb16f9e7be2fe7eb665ddf93bb744653a5862964fe8b1. 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/JPU901501093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43573d339d6d24313dd1bb18eeed70c38fae283850cc8817c6b8ab3ff1496efe. 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/JPES01201942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa876c779c2be6a9cea3dafb4c3868bb9c0ce128c14c7c4e27c78abe896f8fb4a. 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/JPU901602813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65fb38b8aabd4e5762717fad183c17d065c1f483b5e3362eccd268109466cedb. 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/JPU901502872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb912c69dafa128dd944ad0483441356861d5c513f9c3f84a8d8a2b5bbc78a09. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/JPU901501771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc629ad4b4efeedf137df5d8a8457baedad58fc92ea1b2e228ed419381a36529b. 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/JPU901700729.
山猿 プレミアム・スタジオ・セッション
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x469a88f43a7a1f9ee8d444ac517f7031b46b461b55d16c010077b8facc569341. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:31:25Z), 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/JPU901703051.
山猿 プレミアム・スタジオ・セッション2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff71d57541345af2dc75fe4bc3a2e38526fed3b604420b97d9a356cd0c60d615. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/JPU901703368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabd983b570c0e1ce618ac430cabbbac3e9ad2b5e4f580a0a9c9228e117e26950. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:47:02Z), 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/JPU901801009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1696b1759e75f4a79f474797883602f5934cbc4e5de5f4cb58ea3d4a0234bf. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/JPU901801011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cedb35006868dc06c02b463f4804158ba417f3ac21b54637792199707fdbde0. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:11:21Z), 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/JPU901901111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a51e771f11d7acfa46911ef9d56afe70a378789a2fb4f858672f0f162f3f56c. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/JPU901901116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c20519113247291cdc67669372b054ab69a5d8e7511d6b69df0ac1520204b1. Chain 2 (Bitcoin): anchored in block 959147 (2026-07-22T15:43:44Z), 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/JPU901901120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d90991e00b526eace60c43badf365347819e4de60b8a251751067c922d52f3. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/TCJPO2153729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae23970003ddeeb23601f77c66af36565a321ef2f85ee2b5b96e6606ea9e7e24. 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/TCJPO2153741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2666bd2277caed5cc3ddda84faf8dd0e746fd0aa1e8f2584cd33496d33d48807. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/TCJPO2153770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec634b4be1ff3a98cd51501aa57a0374dce417baf2e4270f097616583e51afd. 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/TCJPL2061822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0410dce405865d42293a032696d58fa7bfe55212fc276ae6a0e735285090717. 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/TCJPT2277467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04630fc33450af8ce81cc1306802127151de11bd7ce0bf2b754e492c2b85ecea. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/TCJPT2277473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59073fac9be81d28275f8f17fbf2871ba2909b6980dc7ff4b0be0b462563e07e. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/TCJPT2277474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa44f21412a7f9132235d88b32d6cb30ea64b3bd5d1c00c86805587bbb1488351. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/TCJPX2369610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c67126bfc890ecfa50b81d612fe306fb8d3db1d4714709ccf34bb42bfbde7f. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/TCJPB2416299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7888ff749da01a75efce31dedce09151cc50b5b8a18b5150a93b03022cd815f6. 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/TCJPB2416300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcee3d2670ddaeb87722de325f19408298061b1ca1b8d4b550baaa5365f2934e. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/TCJPB2416304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c1a1b61c3422f7ecab35ce0fe9a1d066dc7186095eb73204e467841fa3e70c6. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCJPB2416309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5214f270b83c7a53b8d06e2ebed0de40ba5160e2e37be839b2b0bf49edd4bb37. 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/TCJPB2416310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7205683f9cb7ecaa1c57f9c320dc5a19e9e5d5428c9887f65acf389f7212ce. 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/TCJPB2416312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f8d45140f78d6b27831512c1147802e105693c6d6bc4fa9f03685ae20639045. 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/TCJPJ2503529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d7a8e9f2d701d009a882c43ffe69f790a7d714beb678a70a782f90489dd1db8. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/JPY200701311.