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 0x84590ce67c5947d02a66c49157acf0d7b75e0db962e95297de68650026409265. 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/7387eaee-ed43-4061-98b5-471d9d8439ab.json and https://artists.proofprofile.net/proofs/artist/7387eaee-ed43-4061-98b5-471d9d8439ab.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 0x3b15ab2be56623e211f7dcb3e7b7e398518b08a14fbd7613ae50ecb6b8c9ae77. 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/QZHN71998266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x660cc245996ab8e2fbcaf33c8cef3c795be9ebfd548a336c27c5da591919fb15. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:24:08Z), 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/QZHN91978538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73afcb8bc02cf72263d06a47e47ca1275b5ca5dab6584708bbcfc0aeb1b844e2. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZHN91978720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32fd46e18383fd8eeb1ace6824cb4253a75e4c9eff5abbb258d1e02bcefec9b3. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QZK6Q1943804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295312484aad01a73e77b6722456fcfd9584497a713c1eb882097a048e969c30. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZHN62090312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c9ed585b7fca92973981b39b5aad94f7974d939f09058367e3086596a796bd. 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/QZMEN2143789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c28b225de595de76a8bb5de7fb57119be358210df857d6b881172cc3e6e4e8. 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/QZNWV2168128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d849eaec12a5f2e9b2758ef7c522b80c4ad4559845518a6dae17751c50f8fd. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:30:34Z), 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/QZNWX2164789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x616f17ab2c75b54006705b3415c17adccb04308d6dcbbc32d29150d37a321bd0. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZFYY2224698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab3108d7529eb7aed2552a443baeee705ac885538c2d325f298449280cac7de. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:06:44Z), 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/QZDA52248653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82772948d4c61054daea68bd7d09cac3c3f0e90312fa3d8613a21a327fbabf6d. 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/QZNWS2265925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x785ed7267762ab7996a59774774a65bf5d6d05c182f6aacd540ba91a7ceb6ea3. 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/QZFZ32305393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd20c62111e0965d497881e494ddb42350673ea824e566d6d59fd97fc238ad9. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZHN62391048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e0a5ff0dad51f87fad6a7cdec379fb786a53e8ff2dfe296d77bcb0a76b7e04. 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/QZMER2352752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf829acf68c17089f065b8ab0f4a27df3e7617b2ec6994889d625b7ead0cda616. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:26:56Z), 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/QZMER2358952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2076299bb9a5793fc5b3c6ac107f26a733005fe01131c4f410ebc5a40691bd94. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:12:59Z), 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/QZNWQ2385505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e194103a87b76672a5941833f65ccc815fe51b80ce5cc996e359d620606b0e. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:36:18Z), 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/QZTAT2397841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18925c394c9d84df5d4c0ac2b549587d31b1ca0acbc70ba3399e8d1ccb893d43. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:42:10Z), 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/QZTB22303021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c51e93cae2bb86923d8400db8755a0b2d08b0295017d8d12532e416d9998209. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZTBE2371678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f79ff69d114dc90097de3a63e1201661ab9d372af2587df6f2d3b85060353c0. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/QZTBE2398336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29ccff64e24fae5d2074ffc733b506e47e7150a512cb631abe080096bf3fb7a4. 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/QZWFG2303788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd7319ddcf07a0fae7f5c7366c6da57a1b83abfa1e38cb0ffdab588a341b6ea7. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/QZK6L2445853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fff7f8ce6a52cf71a00c519a06102fe62e693df1d13ff3e2a6ab024b8b68b60. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/QZK6L2487254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf3e5b3792be8823a48fdeaef1c94d0ce56ad11a4471c098e726a5263ce57063. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:59:48Z), 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/QZNWS2497181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09bb3a80b9e9b5aef9ba9ddac33913e3eef67c6be71726d2f8bd054abd33b7d0. Chain 2 (Bitcoin): anchored in block 958656 (2026-07-19T04:04:08Z), 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/QZNWU2431510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a041a845d64fb00ce19049078e1961ee494190ef091ed022da7ad852ef08393. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZRP52428235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b29c0fbdf704f32b08d91d6d5fb49a9f22fd779ba949ad4376ce90a77a66614. 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/QZTAZ2493683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd62c56b293ecf027093fd1e2368ee02eab46de29411e2a25110497dfce530f14. 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/QZWFN2459368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8541b94b0e904b02ad3093fe4c44348741af4bd7099e1ea33b330fd807ea0898. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/QZZ772456863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d6e506f839b6630538e32c93cf41f924e3228bbd06b62a8e223bcccf73a4819. 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/QZZ772445600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf215ca367fea2c95a503c32337abd154771f93ad46c4d4373ac8c70783de7933. 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/QZDA62538556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8816cfc87fa9e5ee8335156d60c19c05498a3580b8969c1f53489ffbb0547b25. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:36:16Z), 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/QZES52566665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1764d8a3aff661712f1fe13d23cd26c43572663766a8165910ff7d3479fe375e. 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/QZK6M2530639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50de325ebd52e3d30559a4fb5626de49d445fbbcf6256d7b0e7ff35be8795b2c. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/QZK6G2508902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbadb5bc219087a3ce8413286ea66c7448aa0c3934d1c0eb57e5e80e7b3cd091f. 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/QZRP42584664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf36542cf37ce25871de26553481147cffb4740002678ec005bf001291ee04f9d. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZWFF2508717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a15a9c4cc674ff6162431954d5ba1a18da167f5ca98807151674624a234ba92. 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/QZWFQ2515844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4447575939653a5cb339d6372dac5bc3ea840f20d952c09ff5bb1b90b434efe9. 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/QT3FA2548427.