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 0xd45c4a8c10f3511a72b5234b1201c77dd3a0aab1c87393fdd3f86f73ecc7862e. 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/9cfae112-2d2e-4916-bd57-06a780dbc876.json and https://artists.proofprofile.net/proofs/artist/9cfae112-2d2e-4916-bd57-06a780dbc876.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 0x4ee300750352d2e32927362c148c81ff04b70789584f287cf1cc1a817ad15629. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USCGH2172318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31416553a55d226ec4598b95191a8e02b77ef4131576655f977b1dfc867faf7f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USCGH2172320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf3654b13c26304328aa850755eaa256b92de79d77f4c1fee76a5e92f2a1cf9a. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:43:12Z), 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/USCGJ2119372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff08d897f3e78f46550b136573a644755ceb2314a489e73a49fb1cb5e610a05. 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/USL4R2128084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6badf73a91ea041f699c8c9e3a83bfbb593f07924ed192a5e9b695e0310ad6d5. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:43:59Z), 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/USL4R2128085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5792dc629481afef4bdf2863332665a60a5b1d5890642db2b45db0e4f9b8b550. 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/USL4R2128086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5027c11ebda10867923682e34ba20c9c12f42f081c31207c46be31a73b1a7f9d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USCGH2255645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda2cbaa60459f11e5f03901be118180771649649c4ed83ff7c040da626420f03. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:14:07Z), 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/USCGH2255646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04cb5d59ccb46c09ab8d9a3c2fb1866c595b1a05df9010b8eb0e962596645dfe. 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/USCGH2255647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf19d469d575dfeb53ff9e5f2b97463ad7e852d11615e93026c21d068ea9b3f48. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/USCGH2255648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b43ac26b3311d164e881badaffbe4d447b3158018760696f54215893c92e47. 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/USCGH2255649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4806d37b5b5fd4b56e682cb23489a3591400f6d7a70c10d76f3e55ffd2c2eb41. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/USCGH2255650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5c239f64ebeb338f071d4de5d0bc611d540a24c8f6989006c04698b6638153. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/USCGH2255651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf1821ef93c5c8e3e009a0f6137fb8b2520941ed7af5aca6f62a792d4875d1f. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:25:20Z), 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/USCGH2255652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51cb42406897a9930ce98d008efdc85c0247c8bf96fd299ddacf1cd6e1e5cbfc. 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/USCGH2255653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70145d1dbd52361916f657853c6c35c273fd014be4798e7a63bc779b83a2f269. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/USCGH2255654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0cd48cefad5338c608878903e54da9e2a82a9fe99714ecd6617338dd2e22ff5. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USHM92247235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557e401409832ecd3e933c392f67ea4fd3ad29d8f748b2ea1cee844c0c80947d. 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/USDY42345789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15df1fea1cf23742275a6c8e4ed14a8eefe510838b27a7dd198037267eb89549. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/USDY42345790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaae43b1090ea5bc852bf1523b0dd693c4360f9c1585d929fb1c72c3d77193687. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T11:19:23Z), 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/USDY42345791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73eb81888ec94b2be12524e184850f540bd66f2b06e01cadabe63db2bb55600b. 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/USDY42345792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac2703db6aa54718667bebdb7f6876d11f4363791da5a257af1715b5f4025d1b. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/USDY42345793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15bc6337c994889eb1676869babc2894f73b44a965aac09c90a54d92b33632e6. 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/USL4Q2338471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x808aeaf7bbd2bce951d5cbd4e5b6ab5c373910c8a7c806b703632887eecbb875. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/USL4Q2338473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4f9d1b296234dc7299d4006b5199ca69c8f26fb4945e3f8a0a630d1309fa50. 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/USL4Q2338476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5610752e9b51ce3adee3a2eea920b07d9cd2a4694ae7cd95715ffe5828737429. 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/USCGH2429786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bad06c4fee1bf506f28234573297d30c0e75ade165322a1121b92608363fe8c. 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/USCGH2429787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2af0e0aaa278ec0e3463b9ed445db36e8396945cc80919c69e9af1bc2d6a86. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T15:40:42Z), 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/USCGH2429788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ec47431467a61112bdd182beb60676f25eaf93d432072c96a8d6b3415e04b0. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:28:56Z), 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/USCGH2429789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b30377486df36ef9309815fcc4f6f1e0fdc5e976f9a7330b6be97d073c53d4. 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/USCGH2429791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac6479a49619e7bcae69468726d1d44003efd6df958c91b74400ceb433d5725. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:46:50Z), 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/USX9P2426984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cfc7faeeb724ade96ab80d03aa6e55ebf8d810af389aac42651355317b7aa95. Chain 2 (Bitcoin): anchored in block 959011 (2026-07-21T16:20:20Z), 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/USX9P2426986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b010d0100cc177b35d9df87a9a206421db8b5d0e07d9f4b4081e5558635c39b. 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/USCGH2513206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f1f0475dc538a955eb803373ce3ec917fbbce0b95e27e04f653463887db2fc. 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/USHM22514109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab31b061a725e35080e22dc50ba4fa053e04e1b31acd9cf092f760b769631ca4. 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/USHM22514110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3524c725685f4dca8f60ecf45284655767ac560a1e0739c750e7f4cc3e9180be. 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/USHM22514111.