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 0x82c372a4a3b160ed24735f9075f00e80e6b61e41f7488fcb08b9415662532fa8. 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/5e1afbd6-a266-4fe0-b898-38258fd8fc70.json and https://artists.proofprofile.net/proofs/artist/5e1afbd6-a266-4fe0-b898-38258fd8fc70.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 0xdba98c60acdc3b31b4fa1b11c069ef1d48b8e83b4f3a4f711add5c6525b0ec33. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:03:46Z), 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/USHM22246235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6530c0fbad1237d20954be3a59553509f273ac10167c1410bbb0b2e56ff36f48. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/USHM22246236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f3d8b8571f7d36d03129a50795018badaf4c4451e78bc569f3fffc7ef353371. 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/USHM22246237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9d34cdac2d42b11993e18ef594f255f285de2138ac888e515112f47b482effe. 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/USHM22246238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b7f337e94070a2eda4094333c37da01e239948b590c1184ade8ac919c99c6f. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/USHM22246239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x714ab6e2a72fff5fea26355733d6aa1c47991bc0a3c1e09e318c96335c145e53. 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/USHM22246240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9abcf68a330b90fa7500188bf8144a7dd0ea112747ff9cdf2244417af389d178. 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/USHM22246241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a08e188b02423c68e998aaa93e997b382b45e247c35dad000bfc1be8bbdbe17. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USHM22246242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a7009883fbdba0aa1375a24063dc31bc013affe03a34d7011253f7e490e352. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:56:35Z), 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/USHM22246243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97819536786f233c47c7ae6f27ad716acb31eb1c7df64b7c16a8fbf03768ea88. 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/USHM22246244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9715a68e4c7d3b912fbbb8ddb91a7389e5e6800ff5a2cd9d1f572987c600164b. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/USHM22246245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45349ebd16ef42bde1eff210ff192336afaa2a780849817ff3f47fcd14622b9e. 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/USHM22246246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c941edce149cddae69b73882e17b04f34e0649944338a3152484366c989614f. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USHM22246247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5da0d1fb119b0fa4bc2106b544e491fddec89ed681737954c72f98e11e1e269. 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/USHM22246248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff4528032c5da5a698d93c34b51ac3a0847750a7c7153027c7236bee4b73738. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:50:38Z), 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/USHM22246249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f8d862ea3445431d357163e96d07f8a41796db34fa8150453dda0c95b13d33. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/USHM22246250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a579df854bc859b9eddece72c012417fccb26ed75e457ec449d4c3456db029. 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/USHM22246251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x186223cb100317eac815f42c9f38829da8b7611504e3f4772a73c840925d77b0. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/USHM22246252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78732b63bbbfd4b5996dab2007fb06855f3afad08007d418a5310c45a276ecae. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/USHM22246253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dfdfe58a682a0d9498b5f7d24e959cfa4322404843c524cc7bab4ebc998ee49. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/USHM22246254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a4521bd965dabdb87fcbf728727cba0513f8c6eb48f0a93139cd9aa1cea12d. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USDY42357993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46190ae87442ca66b40415e8a6c26517c870758b19a18ecec968ca9054abd286. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/USDY42357996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc365993ce6453bc550867a69b2b234059dcd488d5307ae0d8759a6524c624852. 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/USDY42357998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2dd5aa6dc782272f3fee62bec80dc1719d3dc59bd555c1afbf31b9c2436e68f. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/USDY42357999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e8131a62be61269bc23a3c56092e0033c31ce0c272a71e259addae8dc227da5. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/USDY42358002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c8499611d7a6e47e2e3317ad6c70dc4ffe04a48a2bbe4039bc50d86bdb3681e. 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/USDY42358007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf3d5d07f17bbe9267fd448c4e4c7d1dfe495d3141dbab6605f98b5817a50cd. 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/USDY42358009.