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 0x56030ff7c6c32d453df68196d69cd0f2af897beea0f75019a79c7a9e8f15e145. 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/915ba5bf-ff8a-4996-b668-0a2481d3c009.json and https://artists.proofprofile.net/proofs/artist/915ba5bf-ff8a-4996-b668-0a2481d3c009.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 0x89518e27b468fd538209ba0ca5615089161d4c2985e35791ed363ccf603d977b. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/GXF972499306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e35ad701da96bfc5e2958a50bd0c370d92771da69c8f15bc29e96ed1be21ec. 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/QZA742423760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe84f942856fc60eb554fc25429aacfe0d35e76fd8a71725f6de74b8aaf5ad4d8. Chain 2 (Bitcoin): anchored in block 957830 (2026-07-13T09:15:55Z), 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/CA5KR2507064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b3df5737111dd52eed3a9cda2a4435027d27a34a2c18204c22bde0a7ec8869. 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/CA5KR2507065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85084cbaab52744dbb09ec860a9ddb309a0be43e952e2b093905cb3100de5ad0. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/CA5KR2507068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74428d15c47121d8cd9871eec24c0cf3ce511a7ba6ccefce37656128687cae9b. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/CA5KR2507070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841ef1d551c866384c5b45a2ff98a7cb9f3c2b05cdce75b376b943e605fc6619. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/CA5KR2507071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aab76c850c4bd72fddbea836acfa68b7e345a9ed9ee6b9d253fd62619f2c699. 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/CA5KR2507074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0283b606706c53eea1069da6286a8c647882112c1fb3ac1f398b7f1fcde7955b. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/CA5KR2507076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e42dbc0bb1b4c20d32b2193e8ed6c991513d80c7b37a73ac800a074d5360ad. 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/CA5KR2507077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a4584dd87b94b221f02aa2a37db6ea3229034d53056322915a27568033f714. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:05:09Z), 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/GXF972468220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x814afad95e5e82d17547c25adcc56d2a784c0c817efd165a8658ae20c7903b37. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:58:48Z), 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/GXF972477566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408a8f2a55f5bc546314726320b132670e4c0818a2e8f418c26023ec24a93f51. 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/ESA012516858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb08a0a3799d2da0c9aa33047bb58a8cd3c854c3d39b4a9eaf7532c073ef72446. 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/QMFMF2445920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda321a5f15171092f5edeb6631419d8fbd8e74645db421a04eafc04f45b3a915. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:32:53Z), 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/FR10S2504410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf4960339eec5593ac219016c5b97668822d28ac315f299d993582ad878121ba. 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/FR10S2504411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f63ed5b151d4865a48c5afa4b10d81aaa3b260e8ceb176a4e3533bf26f1519. 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/QM4TW2558781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381c53743e1336fc22d5e99f1c34fd361eb2c79eeff2a4055639005ea0b06e00. 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/QM4TW2558782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8effed2b9792715c6f4d31bcce6b029be9f62fe5aa248c8fd8993b7976f34031. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:02:41Z), 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/QM6MZ2510791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd5f14ead634e7d23cc19cfc38370cbb08339c2f4928b90c9a8bd20591c9fe8. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:43:33Z), 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/QM6MZ2510792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63da1a92be6da4245bfc67487095dc94430c8d31389e1d65ffcfba2883d90c2c. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T15:57:44Z), 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/QM6MZ2547036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156016147fd7553aa62db4c331460e7149bdfba71a530a4e5b52385cc1f84adb. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:08:52Z), 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/QM6MZ2547037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1ac0483bfb31d1f50857fe9ff21dc955d17f29ef72fdcba989ff9ba23fa134. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:13:02Z), 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/QM6MZ2551400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5024fcb161ea01d29ac8c6f6a903f81e3b4e73226f462aac6d2949acb0866323. 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/QM6MZ2551402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb1b22d2813ab46eb49e363fdae80ef4293412068feac8088e04193b7cd3bda0. 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/QM6MZ2551401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a19b4cc8938028db1da944b18e6f59bf104521ebf181535971c67a9fac0db6. 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/FR59R2577631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f16933055239b68d1711eaa7cbeb5307c56f61411b91c840c560b5464b6e75. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ESA012564522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f399fa50e8c25a67f5b6c1b95371f5338dca0a5541ab5d58eec747c9928c2f. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/FR96X2509738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8896b811fa1e4695f86c1ba505bd0218651d79a8dc4315a94199c86cd13c34e8. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:35:27Z), 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/FRX202571850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x089e52739bc2c60cc7a0a96b815923a06ab35b96556c08f63e568f54c77e1b68. 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/RUA1D2576407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d05c3b2a1c8b31346251f1bc8fafac2947c6cee6c795940d0f4ee4a3ab79fea. 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/DE1ET2383552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed3332316b58e7b19457dd7eecfcc7834b64d2e0bb48d194e2bf02b709dc0c6c. 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/DE1ET2383553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e158bcf623c120cdc19dd867f6a7e8dbb45c13d4886c00d60a8fdc9c28b674b. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:43:03Z), 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/DE1ET2383554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd3630768a37fc603b52a27265bff7747440e6d39f540ac1d44eff0ea434b32e. 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/FRX452577878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c937a351d6861f3f4677bc3ae88e2561f7881152acfdf773bbebaf314ecdcc. 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/QMDA62517403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x041f5cbc71b1400af8b6b127a14adab6ee69ff9f1468c9bc826d2928b727ba59. 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/QMDA62517404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a35f072046624127e1aa9f937cac4caff55aebc170f2d9ddf407447958de9f7. 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/RUAGT2550317.