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 0xa84330ef7e5c162f1b5892dc6da82420c4ee5b00fd16c73cd4acf1fcdc5983fb. 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/3ac9dcd9-ea68-4e07-86e2-479d0c98600c.json and https://artists.proofprofile.net/proofs/artist/3ac9dcd9-ea68-4e07-86e2-479d0c98600c.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 0xa70b569a7643d15bf6fd401d60023aaec38b6f179237fcf13b106fff0fb3ff16. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/TCAGF2237899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5792186de2bbe6d58ab4149975a420677e878a04c0e74e9327c605a1bc84465. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/TCAGF2237917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbbecb232eda5ea1be827c8c6a396e172678486b13cf467ef1f1d6bbce408f30. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/TCAGF2237919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be717793cf451f5c84b269f038a4c9ca0be178ddcc66fc4d3b362d9ef5f45b1. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:46:22Z), 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/TCAGK2255908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x154a900cec2404e734e8fdebfb9bcdb934fb057d38633b30f1e276a71723505c. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/TCAGK2255914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f192452a1072c4b77e99343361790e00c3da3a2a87410246632981d0521737. 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/TCAGK2255959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eca269329329d4e7d753650caa7e2ca4990ed1d42a8bf82b0b57c84d94329a0. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/TCAGS2396638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd08c4b88a242127659762e9f066a6f43b7157c387832d6fd80e9dbfec1f7744a. 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/TCAGS2396642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de23b51392c0254c0c2eaf788fda1ea1860fa415e529e02372c162d1e84c31c. 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/TCAGS2396644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3bf52da0cf80fb071605604fe8efa4519d59d30795a83ceb61cce395b8af31a. 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/TCAGS2396650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e44e6cd59c76c8258f7fea89c2407a909fdf536b5f9d092fd0929dde9ada11d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAGS2396657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0311da9ad231ef5b8932928b8685bfddccc71343602cdce5cae967644cb18741. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAGS2396662.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b644a394b892a8816a2efd8b55bc702770867a1f8008d051b04dab0237d61c9. 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/TCAHQ2320501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e5adae5cf97c55aca4142545a7cad5108adfadad22d797b863778a7cea1002. 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/TCAHQ2320532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7a2c35d2f8612e120257de27030883d0f5e0d783d34221ad67bf96e177a8d4. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/TCAHQ2320538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029050a158128e1bb7c8adf180c9bdeed94640cf47f9de2a7fbd35f7df44a6f8. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/TCAHQ2320591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x729e1d05354c340d747a640702517dd097e4aa501315899880f874b43c59f60c. 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/TCAHQ2320594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f62c7b67dabd84340f3d683a6f5300818a564aea11864984c27d4a22816b26. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:36:51Z), 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/TCAHQ2320601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a1388baa4c25316479efdece7fc65c0050cca2c0f16366d21120f4a0769a727. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/TCAHQ2320608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaffbb922fbe0ea133b6bfe44a20b644b4d29160ff475fadb14cf032daa108819. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCAIP2426737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x977a6714edb7f668fdbda6e41e76bc87828c770101aa3f22c969b4cb61468e17. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/TCAIO2426742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e42956f6b178a8cdbaa0c953ef9a6437ba01edd797065e19edbed876d043a26. 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/TCAIO2426754.
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