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 0xf95c2ec1626461a2b2e18456a8e37576772843229463986a7a9a1572be3b43e8. 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/f52c4707-7a9d-40f2-9c1c-de3d4c4a0392.json and https://artists.proofprofile.net/proofs/artist/f52c4707-7a9d-40f2-9c1c-de3d4c4a0392.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 0xeea544ce7ee4afd4c920e2688077687b8ed1aabbf6db2156c18a440001351d4f. 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/TCAEU2073156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc792eed3dc1970b6fa4db40c41dfd3674dc9681d92da610c8e259fea1cc2ae. 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/TCAEU2073157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e962643210c3514e6e59ad4253184ff0eceb8cb6699a99bb6440603157d3a70. 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/TCAEU2073168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x848a857a4a796ca785babcc162d2541928185524c3051b91e14e0937a63f6c97. 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/TCAEU2073172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4430c76abb02ad4219dc0f500c4fcf55a880ec46fc204f2e6557475be8ae1f2. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/TCAEU2073176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00ace6b12552ebaf026aa5d126a7a5bf46b3775873145150b10475d77e823ba. 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/TCAEU2073179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc93bbea914d7058fa7fdb8b2b6ee69205d31e67bb9478fe0095a91df304ce7. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TCAEU2073189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5287de0bfd83782409f89dd7474f08452d73f5039ac6cb58d1fee9bbc66bdda. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/TCAEU2073200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ecea33f69b2676948f70e74d4a50f619e2479be726a63c68e357c2f96239f8a. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/TCAEU2073206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059d3a8b48379e2f5fc2217a77ca921406216d9e34d317f873152410656882c3. 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/TCAEU2073209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd263d5b2beb384e64c61160116da6a7f135f192d4528a2279d0d9e3f6ff0e7cf. 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/TCAEU2073214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x473446214fe5de155d6b1c09cc47cb7545937bfc9306eca812e802fa6e74903c. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCAEU2073219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36cb7bf0ede506f8c453a431357377dead9a25de4e1f5ec5008d4d59e48a2a8b. 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/TCAEU2073221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68dc8e3eaae0411a233288cb9f59f7099bf2ca077e1acb2276e681309caf7c7e. 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/TCAEU2073225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb54bdb71828905875365646a61dcf09ff594e1976804c8cd7c6f27e051fedeb. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/CACWV2246292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bdec1776665c2fd5a5fadc677e0574243d4b87ba516b612f731faa9e1d4cde4. 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/CACWV2246305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b641e536fea537984fce5c0f87555b961bfb9d907d114a68ceb0ebb7879001. 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/CACWV2246316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90caca6b5f3e7bc3c495e09ce75e25293921ab38b029825b36093acb3f4046c9. 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/CACWV2246298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e8aa2061fa171ad87289fdf0a107474fa6930a0b5ac9ccb66832a82b60d1c5. 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/CACWV2246306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d48d6e27cd0e34ea4de2174165730e5be5d29540246d0dc1b58f29847202752. 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/CACWV2246317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf89d388fc0255874d8bc5bec25951d9e4648cdeae888df6590753e154e1883f4. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/CACWV2246309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72c004d91f551b6819aaa896d8e085c5afe4ca287d2186a24b4b96e8ee3ea6d0. 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/CACWV2246300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x732bf6893eb67316deddc425ee3ae6049ac0e312fc573e8f0d845736f62b6dde. 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/CACWV2246310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45844a07192c868235b19d20051db14f130fbe67b32165dbabeb7cc30b7a17c1. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/CACWV2246302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed4ce547f8a21b1786ee093102c23240b25967f8b280a1e98bbc4a1149a98a68. 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/CACWV2246325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34088f5feb5d19cd20e3f49b285e52e0233276c6ac697af81f24ba08138a17bc. 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/CACWV2246315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c331281422a42733f79263be184a76100dce6c09dee7321b6a7bea431cfbf68. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/CACWV2246311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc52897c96a4e3753540d1ab70c8e24c158056b4ac9ba8effdcb27c69e4985542. 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/CACWV2246323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce350302528cdbfe28a7a11ad174f1d7d87936237e5421af8cf6b3f1352b4482. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/CACWV2246324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc303458f5b4a5bd99e3716427b0677b9d82a10641be599c8808c17ff74c80965. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T23:01:19Z), 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/QZNWX2251490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf404ef975459ad19135337dba367ca07981db3495bec344858b92dd708838c6d. 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/QZNWX2251491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a1e54e5de1fe0bd246e4e0ba010adbad00309bf227643f922a39b40012b36e. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:55:53Z), 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/QZNWX2251493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea9d07c77991f9bd49fd7fe400b20b32ba14dec9a3a2c810f41a958f1fe1396. 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/QZNWX2251494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb26e5051289419f119fef0cd5b511a2b813eeda14b1bf796f0444d439ecd2533. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZNWX2251496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a8db65bfb22f4f878d578ae1593243a17b85ef911858640279bffcdda5201a. 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/QZNWX2251498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e98eb89cfd5a057b90cf8d9f6b0a42efa5067b5fa5bbf8b5ae3662b292e2420. 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/QZNWX2251500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf80c6e3621a1f9123b071265e8bad6ea6a31683865ad689b4e5f0da49b857854. 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/QZNWX2251501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a22092a1b4da3f309f9a049f49e2622080b50dbb6feced229f54a4da449188. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZNWX2251503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x472a6972385a039992b8613cf56ef44b5ece66702fcffde9acc5964540750733. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:41:54Z), 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/QZNWX2251504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2df2cea809fc069d4583057995c52607706fac92cff4c6e83c77db35babac69. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:04:24Z), 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/QZNWX2251506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc6f25716cad10d60686368109bf774767cf40aacee29c8cb95c6ff00a1f5f4. 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/QZNWX2251507.