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 0x5e474e6212253a03891197040170fb0bae1afc9f1197663e8f27a2c66a79e222. 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/15800b34-7255-46b8-9b14-afadf032b8ca.json and https://artists.proofprofile.net/proofs/artist/15800b34-7255-46b8-9b14-afadf032b8ca.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 0xd9a5a68b0ad02cdcc0c7a8d207fe15a39e994ddc89249c28c05092a28663fa0f. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:31:45Z), 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/BRRRD1000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc214029386c49414973f5242708c90d83b15b47fdbb8660a440eb4e8e15e7e. 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/BRRRD1000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2397c9a7d5303221d4ce392a37847e34972243dccd78cd0a474ad7ab1beaea5. 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/BRRRD1000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f6a3355a38ea30dd439958cff429d3e0a8cdc82d6d7b11f6501620006922d0c. 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/BRRRD1000007.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d9e7a9b6894767343974a7030543e1b5a4cb4c8194f09a6cc7ff2574bab6f5. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/BRRRD1000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eef7bc371afaa7b345cb4d541fa005db1d1a9621590151f9e474ee355ece8e5. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:27:20Z), 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/BRRRD1000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa32d1ac47242950a65c06ea24a401c8690f4f6c2751e59f0ff05a0e1f52e734a. 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/BRRRD1000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e8f393fd82875dd68a6368487ad2f5afd5fa786d8d9f954c72bed030f464a62. 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/BRRRD1000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4c7ab4818f4f64045debef62f2965ea05e4672c28416ea1d3588018823e6fd. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/BRRRD1000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdee2fa178466f60e36af4f67355f2d5b55bbb0675383d9548a4a759b93f8177e. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/BRIHF1200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee8da22c56c584821c0b200ff33331a1ca6df2ba159d46fe9dca729de2a02f8. 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/BRIHF1200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc28c4c2040cf14d895c0132f621b6a3b613648f72c480a4fd0fa9e48951b3c. 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/BRIHF1200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x613e3467f4f39ec78426c1a261e3928225ed89c6a5522d19455ace7aff1893d5. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/BRIHF1200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd8d8315ae82dfed92b9c0b303318eb5abb0a977d16767088ed3524b0ab37d02. 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/BRIHF1200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a5d1dafa4ea0499074bdb6b1829c2fe4ca3db65be8b18a541a792c91a668bc. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:25:24Z), 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/BRIHF1200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f271265941bbf7f01b33807d559647cba56c2641dc5b6ab655e05ee1a4e22fe. 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/BRIHF1200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbce40f3c017a693182d938c2ef0f187a56efc7b63d9814f3557a3da23c2e8e2. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/BRIHF1500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd7bf625ea6cc3bca983579f2ef5948fed26a5cc94cc896a1fbe321dca86622. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T04:45:22Z), 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/BRIHF1500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff02cc3db98c5f51d902b9f5af811cd1a7bf4f2a57a44d51000f7715c2f2202. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:30:52Z), 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/BRIHF1500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4315aea68171a9c1ceca9bbd5bbfc86b6d801990005f9871e1e707a2a38d25e2. 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/BRIHF1500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x753322fdb134e5109962ef1ceaa91ab69a807f2ba1503a68df4b1baf4694380a. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/BRIHF1500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b63b979e0997c23ef7b3d2eece28e5ffb955738216161d3d62776822fb7a513. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/BRIHF1500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aae89618ac2283b2977a482cb0a339bd306a16a92da14658619a6d31e45b64a. 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/BRIHF1500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b3f1921114231f05d3c50725e57cc0b70778d34511788c07c243a3d76e9ee0. Chain 2 (Bitcoin): anchored in block 958678 (2026-07-19T05:59:57Z), 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/BRIHF1500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fe5cbab99bfaba9037968e56566cd896bd6d15a94844d8e6a58e241f08750c4. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/BRIHF1500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e43ec038dd0e7de2e7897d2aac7be0a103e7b3a4e44e15d8e673f4409f2238. 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/BRIHF1500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f8bfa42d1c89301a8dfa810d8e045037c8c71bd2169bf0e06d2d2f4cc9c2958. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:08:11Z), 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/BRIHF1900001.