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 0x15b1410317bb70bd30c0611793ff69dcda916af32fb96915e517515260f4c8a3. 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/2ba16714-876b-45a0-89f8-dac90089e690.json and https://artists.proofprofile.net/proofs/artist/2ba16714-876b-45a0-89f8-dac90089e690.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 0xfba9d815b0eb69a971049df89567f5b68c8cd3f826bdbb61b23819af42608afe. 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/QM6MZ1837558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa343b473d3c2229c45a1945eae225896e50b71e518c6e11a183223b37bbf852c. 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/QMFME1571702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8687a04643212b8802fc30d2e1b930fe27adf76cd649dfa7c4223271c591693. 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/QMFME1571704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7087c0536b314bafa7629c668e2e6d6d4ff32da0866a02454a575bdc9e6e5a7. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/QMFME1571705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a593958de8d911e2ae845e9f3da33b41057e523f548c0f0ff9be70a73745d4. 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/QMFME1571706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a177be74dd2e6e966d8d462381cba577f0e77acc764e2d83f7a584a6e093a21. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:45:20Z), 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/QMFME1571707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd53c60b745826028ffc28b296a0257765f1ea64080b2b770131b75d8eac950. 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/QMFME1571708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2267e1f5a66e3d862db28d5098aca58ff83e10204c23a0f3cc88840407587c89. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:20:24Z), 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/QMFME1571711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64fa9800f7e3ed23fc77e61c0691ac7e2fa4c0a08dff93865f93b57f35502680. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QMFME1571712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3554aafaea7944f16faee95c921edcc217708966d7cfd7de7dad4700f6f35326. 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/QZANL1772355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f541aef6b3a7bcdb484910c4fac5f5a76366d8d6f3b056c0ef77208a699715. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/CLA1K2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab62c7c9c8de83b7242554b04f561e97e6fc71c5131c7d1928558dd6166ce807. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/CLA1K2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85498e90bfcae34904fe642238fdb3b54596e87bd8d1e5605eb90df0d13f711e. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/CLA1K2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d76dddfce65a9fe236abd6006f0ae96449410ade5b1157a2665659358b412d. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/CLA1K2200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcffa8bb116ed8ee5de77a67b2852ee0264ad83ef4f9bac84c44e6d135d67ff35. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZGLS1969809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x655de880388d67ed6cd5f54d7998c8a58372c7f6f70c1be68988cf90b8924444. 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/CLUM71903446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca85752fa467238dd395cf18c3c7721e4d8f57a26c1cacaac4de98b18106d16. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:07:33Z), 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/CLUM72100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c9116512b9a01dec9645d7f54cd359c93e42af445b904ce08eeba2276ec427f. 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/CLUM72100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4189f8e9e23445eae92b47dcacee52c03e2e8a8b72f4b3b142fca8bd1bc8b3d8. 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/QZMZ92402674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d2ebb13356a7631621ce5b7e57e31f9f4c4fb1eb559473f71b305b3e8a7df89. 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/QZNJV2444784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d7058879453c0dcb59dd1e2449b3e4a0e83f7da23cd5f732e14713cc50ef02e. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZNJV2444839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef3e4e6ef4c9c5dd0fb3a6806e35734c152b03bac479b5dec2421ee8384c04cd. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZNJZ2416881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd65176b4fe52b0f25da45d06f69e0200c0f39d92fe13ec8f22dd7d9c77befa. 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/QZNJZ2416877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335d564da2c2a1e19b556fc581ece156d292ae45e31feba3add0654384118bc8. 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/QZNJW2403926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2758329641fa631d8519e5d55229311ea7ec31fd9249ecca2901753954ca20ea. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZGLM2477302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335d564da2c2a1e19b556fc581ece156d292ae45e31feba3add0654384118bc8. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZNJW2403926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5675f2cdf7866d952367232d545df0836207dabc8df300bb5abb450480650585. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZW9K2466156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2994860652f6a3e932b9f920cec8238f4499c71e32f2a9d05499fc621c8c2404. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZGLS2499521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78701dc8b608522a09acb624708752824fcd6ec715fc13f71477955ce8ce65e7. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZNJW2403928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4189f8e9e23445eae92b47dcacee52c03e2e8a8b72f4b3b142fca8bd1bc8b3d8. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZMZ92402674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed44c73897646d2cbbfdf2079de8d70636568b696b3b3754c4102fff9dca467. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZW9K2466157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d2ebb13356a7631621ce5b7e57e31f9f4c4fb1eb559473f71b305b3e8a7df89. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZNJV2444784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7cffdc601220195d7850f982d1bc3bf4c370290ae9db116c228510c634d990. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZNJV2445201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e8855614743fc4d4846fde5e5b571683e7e13901f8c1fae7b79e66c1880d99. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZTVM2444931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62945bdefb45ad50325ff076c3fad1cac0d6493623b5cc55fe228cd5a128fd91. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZW9K2466161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04198c3e14b859e792a99c560259bd60280a0011bbdfd6f2703d48370f7ec070. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/US7VG2537022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c788924efca16af15e6c4e4e799620bb78ecf9b988598923e7fa91da146cb0d. 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/US7VG2569783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b88d84540591989fee13fea8429a18c906ddb583765bfa8137460cdff62557e. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZMZ92576222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb126aa75a877ee4498d56f0078e21bc8282df1d4d63ff5ea695fa2362f65ea15. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES71G2023624.