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 0xfc149ef7e0c9f2d1fe04660170c4039cbed18485b7fbcd29d225f386fd50e87e. Chain 2 (Bitcoin): anchored in block 953638 (2026-06-14T13:10:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/381c47c7-375e-44e8-a683-675bf1434813.json and https://artists.proofprofile.net/proofs/artist/381c47c7-375e-44e8-a683-675bf1434813.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 0xc649737d6eb9d814396aae48086046a8e8373c1547ed66c85fca4ffad7cdeb64. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:43:46Z), 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/GBLFP2518713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x566c48c3900d4593832c2eae271136a310efc88a1d8c499f69721b8bebae0c8f. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:44:59Z), 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/GBLFP2518714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e0594dfdc7308cd40d1a7d76ecf96504873e61ac110ffb6b0cfe16f670dda4. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:00:03Z), 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/GBLFP2518715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x238f6cf19bc3d17037255a1e398b61198829fb27cd35268977daea65368cac3b. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:17:08Z), 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/GBLFP2518716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa307f2a26ef8981dbc14544d27ba3d173cb50ff01e878ecff3253d063cff747d. 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/GBLFP2518717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2750b874f2f2f286638ef5b41fe9e2c440293a4f89f092c3b5cf22b628d5bc94. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/GBLFP2518718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc1f3f43a84f2a7d85515fb26ccd2a2f0813e561dafb3f5ffa2e8eb79e27bb4. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:24:58Z), 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/GBLFP2518720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05390a686b883eb54e4c134cd677eb20d149f99339e5dd73dfd832895d70d9ad. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/GBLFP2518721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf40a1d86cde7dd026bf1d429351bc85429731b70345bc2456411ea41371a3902. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-20T00:28:15Z), 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/GBLFP2518722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed7d88c9290c6323b06a5d97e353871ccbdf22f05b15195a6e459b726b39b34. 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/GBLFP2518724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec1b031d74979e7d315b4cd770ae13c1e1bc3f9566538df37532998a2a57d09. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:50:17Z), 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/GBLFP2518725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb29471bae9b91e24fe67f151326087881f4801efade3ba2138ce6743125a97f. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:24:55Z), 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/GBLFP2518726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x505fde04dace0481c180cc3972690354208bb8877acd9c89b9f6fc865a7ebd9a. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:11:15Z), 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/GBLFP2518727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276a8fea03067a59032bfc58daea7dc2ba028a70e3b56dab1512bdb5a348a42f. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:43:16Z), 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/GBLFP2518728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9218585c2f0f9907e4bd62963cceba3d3ddadb4469e1a3dd1c923973eec349f7. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/GBLFP2518729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60db594ae845c3146a6049bfbb8ba130dd1cb9f34b8b80f9106985fcdd60ac77. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/GBLFP2518730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b64b3e8525c555677e4c887b5d70515c9655de57ae3b6febfbbcbe5cd53157. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:48:09Z), 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/GBLFP2518731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ad98b9f99deef331069752d004d9d6f7388b5912b7ffa77b0ae9980a4bc2bb. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GBLFP2518732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d8ccad9694e621cdc468edae556bf773e03cd6d5dc2518e5af5740eee2b3bb2. 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/GBLFP2518734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7048695a4b841574862ee4c58280276e55516b41362de590c0a6b10ccde541d0. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:12:06Z), 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/GBLFP2518735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b758fea2b1345212919e4faf58c09eebf96a6f9d4b6ac21ba12a2c08f2ab38. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/GBLFP2518736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b0ce98c5e7945c3fc0f1dc34d40f19ba84a77ebcdcc54f5d1bb133879b16c94. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:08:08Z), 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/GBLFP2518737.