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 0x88cfb59cae717e426dc4cf762e596f7a4a53e4893f348ee47b59ba3cd9b3c3ea. 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/0409a8bd-a2c4-45a9-b4a5-796e602cd1cc.json and https://artists.proofprofile.net/proofs/artist/0409a8bd-a2c4-45a9-b4a5-796e602cd1cc.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 0xc9206960df9247a8c3e74be5d4348217a64286448d2cece4b2f4f3acebe37c0b. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:48:18Z), 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/QZTAS2465785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a6256db862f4db9fe0b4eeb08d10269ecab8f5bde25950175a563f96a70801. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:56:10Z), 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/QZTAS2465786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a888fddf65e8b692fa51a67340c2e06df090c596d225da8b9c77c1567c6f960. 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/QZTAS2465788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde5fdad59fb217d4dbdb68a70d10f3c26d17f9c2b6fc0067f2a7caa549e93c7e. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZTAS2465789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e8c66c5777e47540a3169f18880fa2e61f78ac21e9b7765bb9d66bf2ac6355. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:35:12Z), 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/QZTAS2465790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5769e31f093e4d44021e65ab31bc50b3598a990b78c09ac9a031302c91c1b254. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:36:02Z), 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/QZTAS2465791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65dd01866827ed3af2f30076b52dadf1512876af59c3e6f775ed63dd9c2d2a08. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:30:07Z), 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/QZTAS2465792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd3d88fee2e0629ed45fa8b4c6250da9c721d133d441799c48da18ab755a173. 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/QZTAS2465793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7def23d11a634fa35cf9fdc75775d0b341a47573b7b7ccd50717eedde8a85ef3. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZTAS2465795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e857eec1f609e9d309bfc0f455685e06829b5ed7ab6ef5afad9e6f9bf33380. 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/QZTAS2465796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6376332f197d2387c0bce274212b7713ed4e05ae1d7fec4990509d80aa454170. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:45:49Z), 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/QZTAS2465797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa56a2fb357451004946fc8c69ce9b6d8878c2700650fc2045871ea8a4dc761e4. 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/QZTAS2465798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a3b34515d8149f28bfe72ffcfd879d872749eedac2b780e37346f249e78ce4a. 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/QZTAS2465799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd08f4f8954b97b5845783bb072596e6963be245dfa54572d250cc87c10afb13c. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZTAS2465800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d706c5355f98de6572b7b5939747b9a43e4de9ad4b3a9044dc149107171b1b3. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZTAS2465801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf69f403dd4d4be3029beb6a6f40771d14e3b65d6109809dd88144781c15253b. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:40:15Z), 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/QZTAS2465802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c9253cc83ce2f22a8f13005d1be06380388fb53801c6568ff997b772428b92b. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:45:46Z), 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/QZTAS2465803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f3ad0f1c968c79c34181316b6b4f71e5685505931964b1a5ffb2f8229050b34. 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/QZTAS2465804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2007f0d34b587cecba27a54424b931e0ed5c0da26649baa62ec8cfa78c9963. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:07:25Z), 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/QZTAS2465805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x816e13abec69fd905540c2375c204b2f74cdd5dae89068d4b2db2ae97c61b838. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QZTAS2465806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23bdb4480a83027bb3d4609f584cccf3c49765aa0bbf0ffb7fe2c92d9c56154f. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:07:56Z), 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/QZTAS2465807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc450c63062b038b716fe28b113a9b1f0bc8d29ab02a33640d88eed48386cc925. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:15:10Z), 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/QZTAS2465808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd2fc95ce863a971a854cb946e01eecb7394b2c91a4e4a840f9eca0ed547416b. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:34:57Z), 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/QZTAS2465809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da6eb0a31a78361a54d0915a082fabb98aa7017156a24b99b828a7ee7d081d8. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZTAS2465810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf03adde67fe48ac35b0019b73ebb53d7ca4219ebf13be1dce29123f95fdb048. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:25:59Z), 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/QZTAS2465811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe968f7a1b896522849a0be84dd5c745a55886eb0ba6aed55f893567dcf288a71. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:05:05Z), 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/QZTAS2465813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce77940a55ed7de54dcaae6924ed61c8f2741e227aff39d1367d896e728d7101. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:33:50Z), 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/QZTAS2465814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4690147aac5878294603fa185d3468f8634cc29d7ec6c7e0983f5564f322cb67. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZTAS2465815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2552231b9ba505286cb6103ab2b98620ce68ac33d67770555e9219e0c8f86f5. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZTAS2465816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb1b92057e1b2cf4ee68b33ef8f8cd4c3add405d45e07645562e8d2d687a610. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:05:02Z), 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/QZTAS2465817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a90e4b097787b69293a1b01172da5f11498b69c30df18dca45283bb9307b1ec. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:39:52Z), 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/QZTAS2465818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb550f2fe419dae22fc131c5bac558758cd56fb1291b0fee2581391c7b08b78b. 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/QZTAT2434623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5947cef8c8031a88f3714ee77427401138b5ab1a2518a7241a3e0b38ce0ecad2. 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/QZTAT2434624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31812ac9e3f52e1d589c272e40bf612bfa32632b0554e6a9eb4b3676f3ebf8df. 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/QZTAT2434650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e7afbfcb6cf703437df7c88dad92068e7cb599189ca17a1e6c93da33d9d74a. 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/QZTAT2434651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f123c74f26dddd763bf347e47b9519512987219aabaf0c3b7494cada1d54e98. 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/QZTAT2434656.