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 0x28b40259f1daa382119ebe306bd483ad8dc5f301cd45e2d1980a4e854a26f154. 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/a0322196-e767-42cb-8b38-80568938047b.json and https://artists.proofprofile.net/proofs/artist/a0322196-e767-42cb-8b38-80568938047b.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 0xeac89c0138779c0fcb89758781531b4a33a8f874e423e443bcd85f72adccedb0. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/CAENV1976194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x412445773973ef3ad24e478267db83b89ea522aaeb5561a1c4602756ee2f7b65. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/CAENV1976197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa8d65988439dbc339259e03573ed2c0a44ed3f11078e7abafd0264d95291b2. 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/CAENV1976196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea3514359883d45e31fe731e52dda0c227fb712e467e7d9fb7de7f593173e895. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/CAENV1976188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8833b05503d1d9911e2e53091761390d85047ca4d783a760709052250b78e2e5. 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/DGA082298333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe25f3174b7ef31f287a89e39f93c0a2d936c70e1c0ffb8668dd8f782120f2d85. 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/DGA082298335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e901cf494e83ac645b2f0dea5db1a7016734cccd51ddcd50933d90e1eb90619. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:10:13Z), 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/DGA082298337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b9f310e32833d5aa68aa5f2232c262041b3ba65e1fe15276ff683d24017cf6. Chain 2 (Bitcoin): anchored in block 957810 (2026-07-13T05:55:46Z), 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/DGA082298340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f39c1ee429b19bead607b9915319be7193b19a71696bfb9284122ae4d93e098. 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/DGA082298343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62bb59a4cd2d6fef71f78cc4dacabff3c37a0a040626ada72e848700d180dbe2. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/DGA082298344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a932f76f0e6069cde52279afd56555bc4eba94a12fb21c39326b02eac61990. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DGA082298346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48017e0512b9ad164fc42888e39097a41e7bc927786b4c0eea67e0ffd2e20152. 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/FRX282328692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b35a094d50abd67af77a005a4e9165e98eda76ed2bf9a5c742e74bf89ad098. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/DGA092307755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x963226219ad9e05eb875c9247c23201968213734d8e8d265507cd40ac8c92192. 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/FR59R2492913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d4ff0cb528e1b0e7a0de354c9963ca446e2b17dc9cf07330812f47da02136a. 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/FR59R2492916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dfc5c5a0e64100c49db9ae117281b686fe65d40c41628d77e3ecc975b7cf5f0. 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/FR59R2492917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1188176fa4b197c502d1bf23fb5c96f290c11f8fdc7722e2ee0921f69e52aa1d. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:44:09Z), 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/FR59R2492918.