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 0x2a71c1961382b12ec9566fe6ccfcdf41a7c28227e1f6ae64b26307e33cf2eeda. 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/18d8c269-72a0-495f-ab1d-c5d351b95208.json and https://artists.proofprofile.net/proofs/artist/18d8c269-72a0-495f-ab1d-c5d351b95208.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 0xb6f9dff678d59b8ea29e4bb0d85406fc29e38a99105dd23540bc02e05a9d6c8d. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZTB52533705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eb6a133c48bca464fe9c588460e289f573a46cf1d9c07efed2d5dd745a86ce1. 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/QZTB82561900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb40faf9757772f2ab0c1e40045a8c5e8aa8bbb6e1f28e27dfa7b58ce9717625. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZTB82561901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7dc4edbd1a2fbf9a90dc7c417fe072fbe1c034bfe706746426108b21847092. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:46:04Z), 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/QZTB82561902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x254810ddb51f823a95805bb9ec4868a19e91fb91b3ac0677a133457c154f5e11. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZTB82561904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b3aee4eb3582d787062fd952b55abaae7a52296dd1fe95f2f2de7348af0221. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZTB82561905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe686c1df84330e76d97a0a0db44b8ec815df894ad2996b695f9bae5017637b11. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZTB82561906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeead790be1c5e31b1cacf470e71612922adc629da0005103f66af1f63a3189f. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZTB82561907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd98790b0e4569327c2be54cfb574ad7491116b5b748f92f6ba0b6f54d8ff1e5. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:13:31Z), 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/QZTB82561908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc071d45623d4eeafb5fcdd07abc44fe0c509815d3c2c4ef73c3f309fc2301b68. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZTB82561909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31697b76e897443b23fa9f2dbd5aa4a42b170ada8de833353cc4509635d185fe. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZTB82561910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf55f13c5e79fa3a17037f6f9ac9ae6ea9c60a3552120cee9fd0e12dc580e66. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZTB82561911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d8d68732f3de1d4b2f01f264b5e735e7a92c96cd294bc4b5c8c1351ec6e7ac. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZTB82561912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e441d30317c0b7b3cfec26d64d5e817ec2fc46dbe81b0b390c17164d88d923. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZTB82561913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaeb3cbcfd52f72fbd44e04b122a567a8bed9c1c002c6490fe6cbbf447c26c0e. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:40:54Z), 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/QZTB82561914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f953deab0cc36e4322309e4b05d87e4ee0acc6f6c43ee8bfded173e66e9534. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZTB82561915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x625e3bb809eaf3cdf1019dc13d9b53cc77a05dcf90c8ff0f381a3f7707367b7d. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZTBA2502244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc1cd773114ce2c5e3738a247cb0ee9c6a9a195c4ea7b6c94ef58b47c67cb19e. 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/QZTBA2502245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0680b42b8b08e36735a857800e35e3bf7abc4ad8d4f917117fe0c026e6b3e308. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZTBA2502246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2617c93678951ff585654e91e6af03f62ad37de6e80e38614ee44923b2b3e031. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZTBA2502247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe754ff89f3bf129021e025b65978d9525e434d78135f26512c300202d7ce0e38. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZTBA2502248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5fef28aa04ce136ee4ddaa9fd9321890dc954b2f00704cf1a496305745733ae. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZTBA2502249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x344acba26fc9364144030130b104e726e04e55e7e528f68f78101af753c5e6c1. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZTBA2502250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309b06b377e3b80b79b7ed4909f3f33c7ff85d4d80e1b44d0f1d5de7aba06ae5. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZTBA2502251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x350e516dd3302f2992d9bd9852409a07e24f828157f36e80f6ab5c997e14fb7d. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/QZTBA2502252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a5e7917f377eace7eafb2739832f8df0c19476439086bd569598e12600b7c12. 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/QZTBA2502253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0625d90a7aafd12fd915ea9d90984c6b20dd6dfd55b8525061c32dcd6e33449e. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZTBA2502254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa6cbe5a328df4354d3c81e8a10656207412b110ffab7ebb07dd4257a3847ce3. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZTBA2502255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea81313e9e928181c235960c862ba6efbecf8939e8b9f393c986330ffcfb4b4. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZTBA2502256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1701159db6149d4eafba82703180e0d5f678e5976e9f6ee213b07cdd07fdc532. 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/QZTBA2502257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb1c6e36c964422b3a86dfc53aa1644d40950e3cdfe48d52fb47ca19e85d572. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZTBA2502258.