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 0x64eb561b69dfcd6fb402c78d96a400c75aa7bc45ee9ef9d43b74d2ad285a71b8. 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/08cf5613-eeb7-4c12-81c4-b91f5b75f6c5.json and https://artists.proofprofile.net/proofs/artist/08cf5613-eeb7-4c12-81c4-b91f5b75f6c5.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 0x86d719387dd0c3f8bcf48a619560499b8a97b0635557c7659792d3767273915a. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JPC231300096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ccdb74fec05396b380c7c4ecf7520cb0ab8c78891927e23ae6c85b91c1fcbd. 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/JPC231300098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb329d4ff12ae38db665fce60da4973ffad861601772dbc823163f4883652f5. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:04:07Z), 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/JPC231300099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a36b1925055f9f6803d5b8e876367a81bdb8dc691692767500347a831de3c2. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/JPC231300100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449913f60797e1c2e08f439f21a40eb0bb1b1f71288539af706842086e3969b1. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/JPC231300103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1210cc85526a7374bc035b36e514b08b0fbedc60c534210f89653b545cf2f06a. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:31:20Z), 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/JPC231300104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26fd789b24823dbe37cd9fe1e8a81a577b6a7cae7461b5147757ebcd847478a6. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:37:56Z), 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/JPPI01501010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5682533ccdb20e8e8542af5391ed55770bc94540ac499e8435e8b545b47ea4c2. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPPI01501020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1167751d6a7ae67cd34fba966db6e4c52ca0de95e9e3ecbd64631b11e85fa629. 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/JPPI01500930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x718ecb66af6b5367fd70fd1ae209b734e0655bb4e0a76a3a91ef3b3efd87042d. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/JPPI01500980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26fd789b24823dbe37cd9fe1e8a81a577b6a7cae7461b5147757ebcd847478a6. Chain 2 (Bitcoin): anchored in block 958573 (2026-07-18T15:49:54Z), 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/JPPI01501010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1167751d6a7ae67cd34fba966db6e4c52ca0de95e9e3ecbd64631b11e85fa629. 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/JPPI01500930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa437c8ce9409deaeedb4242e2a269b7bef984b4ea7c2307b6e5f8f3ab5854907. 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/JPPI01500940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f413656ee8d785616ed5dafd8eb2333eb49d78572a9cfa352bac14ac16fb17. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/JPPI01500960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x718ecb66af6b5367fd70fd1ae209b734e0655bb4e0a76a3a91ef3b3efd87042d. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:38:27Z), 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/JPPI01500980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c4edd26954dfaf778f2df423ec21a16eda7428a7afec036574a4f2c4f18a4f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:05:38Z), 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/JPPI01500990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5682533ccdb20e8e8542af5391ed55770bc94540ac499e8435e8b545b47ea4c2. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/JPPI01501020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe25d0ed2ba1e8ceb044f7d279e7260f62a7b32ca984942cb4cf3482ca0dec497. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/JPPI01501030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x082f5c9def08b707d63403680ffd278ff3bc07c079de78d1f026cdc073d856e0. 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/JPPI01800420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d9357f853649574c903e039acd188bd584b26180a1cfdd0ebb77eec85f665e5. 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/JPPI01800440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaedbc5a336c36079f9e2c02fbb4744bacd808ccfc5e7557a9da61e1741715d68. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:47:05Z), 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/JPPI01800480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b40ac027367dd0d42d96e2773874df222e8a9a04a5ffeec09493b5ddb2d74c5. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JPPI01800490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d9357f853649574c903e039acd188bd584b26180a1cfdd0ebb77eec85f665e5. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPPI01800440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe811a1596b59eadef632d864865c1d70d2edc09c613f04e80a34136fb5724d. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T21:01:18Z), 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/JPPI01800470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaedbc5a336c36079f9e2c02fbb4744bacd808ccfc5e7557a9da61e1741715d68. 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/JPPI01800480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b40ac027367dd0d42d96e2773874df222e8a9a04a5ffeec09493b5ddb2d74c5. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JPPI01800490.
Beautiful Nightmare (feat. RetroSpecter)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59648756a3e9c7081c9642b75c19cf20798fc69f8da9fac1e3fdaff8ee1fca4e. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:18:02Z), 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/TCJPF2548437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e90c36a466946a583784072afb80d1c5ba64ea6e1233a0a735365e77bbf3e9b. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCJPG2510905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e207217dcb6219e3d6a53485a6e2dbbfc06711cbc54590388e5016c88d4c5c. 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/JPC231200290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a0c0d53354c6d315c27f35588484c9920133710b8051de35aac0fe340ab272. 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/JPZ922110621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14101513523c73d68b9df4e6629ae8a2ae93d08217956df9401d573b81efedfb. 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/JPQ941200005.
Kagaminext feat. 鏡音リン、鏡音レン ―10th ANNIVERSARY BEST―
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc88205b796c97e6c00ef2c0d2277189b0e4e5e4061eaf9bf9b22af5821b1c600. 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/JPC231700361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d80b267f3c5530c47fce2ed1409cc74a2ff7287a09879bb9ecbd0fa1a5f341. 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/JPC231700369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd00c64fcd44dfda3e404c18caf40f2323c2216721cb5d4fc9f647791fafaca0. 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/JPC231700382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda227c1d0ecc90df17bc0f4ca53a6ce9761c0d3b0123e732f66f92f3a952cb1. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:20:15Z), 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/JPPI02302430.
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 0xab4a067ded833d91d0a0d247db1cc938d66c556540f1ab7f6059370759f17479. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/JPC231300461.