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 0x9d429030aa835c423eaed1b5f8cf482a9589a66942329ca9ff1ca917ed9c8d64. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/df26ab91-3b0e-482b-b009-f634b3dde87c.json and https://artists.proofprofile.net/proofs/artist/df26ab91-3b0e-482b-b009-f634b3dde87c.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 0x7919e00ee31a16b000fa810c765dfd3a65be39ed1c85069e3179ccd338f02253. 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/GXBNP2472909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79733343b9ae504ca215c1ab9bb274018fba41cc972a6b9ee899f81b4dbce6d9. 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/DGA0P2472012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8552f27b10689cf71f22b75804d2554f0f4dd1e9de2dcbf1cd23e017e597830f. 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/DGA0T2435332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f21db984c74a7eaa01bf6571ced38d322f61dff40ab07aa6edb13d48e24b459. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR2X42517147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f9f3f676a710a34804fd13ccf075bc765e4286321212e334cabece126c90fb. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/FR2X42517149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75399dab3b4584bc5549902512c3c8dbf6286893a185064015ab25c2e80892ff. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/FR59R2528814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27493105b90c2b8819237166aa033c630eda3d4ef36a9bdecec739036ace6810. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QM6MZ2539467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24970563c669ca4216fe938b6b4b09cf2603ea0b43f898ea6bb2fae8c5a5ebee. 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/QM6MZ2560645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf09e41d17538bad51a029d73ea020b7337d82878bc8c174215599dbdec4f1eec. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/FR96X2545022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab5e489d72054ad200ce467c170f41279685266266d5665c4906e917eb8c376. 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/FR96X2545025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c8907ee28234b4e09b32273a66b7a5694e6c55a678830325ee714734d99615. 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/FRX202521532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7bc55ed5219867286c7357f4503768e2dc84b1d00abf87b8b984a15839470a0. 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/FRX202521533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e0ecd9af329cb4960621ef65ec1a7ba7ac95f164e7bf01723ff043ae315670a. 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/FRX202555014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f2d19f6473f37eed6cf188b6bae42c211df9a683a15b1f389391a366194886. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/FRX202555015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6743d2cf75bdd1ac3244ef9601df25631972f471203a54fd1700df1da1d854a. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/FRX202555016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb679324832602e6efbadd8295e5c7fb7d0bbf7f3a6ce6c949124e9d2ee885486. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/FRX452534665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a49444a59bf7c0adf1e126e8fcf558d0d35d66e4ab00e0c6da907c845cd78cb. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:38:33Z), 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/FRX452534666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e5b43c8c6fc675faa04d53f78e570e33be912cdbc374d9d84069a52eee0d49. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/FRX452518269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f60804e0e10d0294b0b7fe546aa0f699953900a3269d5ac4a1758ef4726932c. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:13:39Z), 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/FRX762516835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0ee422703e06e987809d1661703a86bc4a07be5953c804e0a220779bda1e39. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/QT5M22541832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa67094f7eafa4727dfda2b88d0687c1ba584289ebb9f065bcb5dcf11bb700fc7. 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/QT5M32507823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa804601b18d1d0d37871d65a22a95d71f9927e6b95b86355abb20af2903132. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:46:05Z), 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/QT5M32500634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c4a5d94e3af7a87b3e59a446ca12f2ab7a304ba97950241a8e95022adbd977c. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:25:53Z), 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/QT5M32595673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607b454835c14f67490f353eff0c8b971f119e8f59e79b9d18a7d0961dc4aff0. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QT5M32513710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb5c990d85f022fc04789f564544b26f25921bfcfc7410cff899dd63fbf0dfd2. 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/QT5M32521091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3aeb63dea92c17165bcf22ed5abfdda821d25d8cb7d0251dc59d1333382d5b0. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:26:07Z), 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/RUAGT2579225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x318bd6e33959ef795a89c9da61d20fd7da3e8014a46db3c79942d7333666d0a2. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:26:38Z), 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/RUAGT2579226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0441d86b6a950af3b1fdac75eec3d3e95cf9142a785793e94b1ad9f400637d3. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/DGA052589322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee4332875387586fb1f1f68e751fae484fc81a7f15a194db00d7416be4d4a03. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DGA052589323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b014bbbbc3612aca97e0d98f87077916da401782c5f8dbe8de8d83c894da5e. 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/DGA052589324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a56a88d6881b079e68a5973250183934da1404a0e3e8fddafc91a6cdc368298. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:31:37Z), 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/DGA052589325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc429805342f8768a492efd96962a0cf1ffbc7ab94d9f7e0b70c40aeb64daf5d9. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:51:53Z), 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/DGA062544680.