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 0x792aa79555323e1239227a77a8e3c1b1892724e1d05302953dfb1217e7e4e154. 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/dbf10773-490f-45bf-b0b3-51012e521e97.json and https://artists.proofprofile.net/proofs/artist/dbf10773-490f-45bf-b0b3-51012e521e97.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 0x6ab88efc1f0f31cecf5f0484cc8f03348181fc435802f4f3ce656d8c8aac6c9f. 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/FRX762139485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49c46a52bd2b7f45d1044718a5b50e80a1cb95d6ad84f0e45206cdbbfd567671. 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/FRX282143629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8762a10c9f8c81c550c8d80ecf9af4a4b0d1ab502ea4f189a6618ea0dc4f3125. 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/FRX762139487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x737540ef2f16e57f2b180c274e61415bfda018dfb6f6f1556a2fe2286b1e6e0f. 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/FRX762139488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ecb0d5639272038d88e8318ab2e5c304b94f3e3f26b486d17c92225b91ad484. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:29:41Z), 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/FRX762139489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae2f917167ae51aa53b5be42a69fa19aa60671ec12d03b27b82616eca8e9340. 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/FRX762139490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a512fa0c76ce4f8aed3ecddcf2b0da214a0e45d9865ed2dba72c8f02535370. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/AUUR11800204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5ce4fb373a693471f1411ebf7a68b33050d2a4cccba4440395e678abff8a27f. 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/AUUR11400080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc1eb33a31b60b7046ec8c107ad5aa2b3e0c8fd72a9e1113b6c2495ee7725b65. 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/AUUR11400081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e083b1d57d481c122ac64bec753120814bf12e51f4eb9f69c63fa7521a7eb1f. 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/AUUR11400082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc10e4cbd1d1740b952d7a9ea6ec2f8c6514cccbe6affd805b5426878d5729af. 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/AUUR11400083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5216ce9d4855a539dba870ad16deebc72faba855ce62793c36cd4aa370aa5e. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/AUUR11400084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e8feaddaf0a43ae5d924758aef0eeb85eb0834f51602fc527811a177ab8eec. 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/AUUR11400085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x997c812aa98cad46716c629e3ce2f54ffa43bae8b4668693a1b644c221edf04f. 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/AUUR11400086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f9675ebfa0b2265d6e88f4d7f058ccabe44742714a95eba3d36d163006108f. 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/AUUR11400087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ed8c3053de5abf157d222c409b8144ffd3893c0801c11dcc282a3014655af52. 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/AUUR11400088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0dc241f65b79ed909daac747a6f6af90974d9e95592c33c314e2dd6ef0f9fe9. 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/AUUR11400089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4f1b7a78c93017fd5c8feed5876f25323c07cc2fc3cac710fd22e0b5a7d7a6. 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/AUUR11400090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5fd90764a6e6d46ced4692ecf99f16137fa54f4be691b557d38c166ebd2bf04. 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/AUUR11400091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa784dafe1ecf9b0ad512290ead28174efb75588a3ddd2a19634fd80ea833aa. 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/AUMEV2494497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacacab6eb38dc9e287af3d5b80fea6f35455155bcdc9c3cc50d50179437b5106. 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/FRX282292412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49c46a52bd2b7f45d1044718a5b50e80a1cb95d6ad84f0e45206cdbbfd567671. 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/FRX282143629.
Collaborations of Very Isolated Delinquents "19
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28bb856a68312d139fd8683796e8747d5853be2341681a7bca438f29123cef1b. 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/FRX282027930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfac42c1ae054ddad7142d3e3babffdab10c1f5272edea9fdaffe2878aac7bf3. 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/FRX202056075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9baa4f0cbcbeed492b20f1af676da9346ad48112fd40d3bbd257d6f930232f97. 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/FR96X2060255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3053710bc658a7e2299b2b6dffce3eec0f6e63c138c3657cc411dbda2e723de8. 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/FR2X42088129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4fd1053aad8045f6974d6570bd6807b66b56585305a03efd50d67149ab24cae. 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/AUMEV1910903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x456e40dc9933e4a3ba7fe0f5ecd9e7f588a9fcc542f3bd440ac52903e6e38b52. 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/GBKPL1955290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x961933e47f60dcfcd200d1a5b02188003dc96a76d4408bf2412933777f689d4b. 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/GBKPL1955291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x751b48033f791f0341c458974addf63a8807df3c625c5a87ac9411e91d00f7bf. 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/AUUR11800211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0419b184ed7360afaa272f0b3df6a767cf3a74cd30a4bcfc5ccacb70ca6d6d6d. 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/AUUR11800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b3f64258d81c5dfb2e26c8a5768cdd5a2aec6a279f68d1ece759def3fc4405. 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/AUUR11400074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f088eba062f18d17f8cebca00d3d932f023e2e5b7f0778f9d25f2ec1b403c22. 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/AUUR11300062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f271956d53e7514d3f701b18c38a48c68d769806b8eac7f8e7fb9cbabff6a7d. 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/AUUR11300060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5750c31ed6777b76380e5ce53cf69445a184a627bf15403cee4cdb4c12acd73b. 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/AUUR11300064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b15b88549e8da1b8d0d6d4bd9f8789c4526fc03d42ffb22138668f7587c86b. 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/AUUR11300065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c67171ab9dca6898b2c01d20376025399567be5964513cd72beee07df1a3d6. 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/AUUR11300066.