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 0x8059a3d4dddc3dab9c450cbd18b4527e4538f1f436da4338cb29cac262aa437e. 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/15bd7b72-222f-4620-949e-74e2558de9d2.json and https://artists.proofprofile.net/proofs/artist/15bd7b72-222f-4620-949e-74e2558de9d2.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 0xda6c5577e45e7e6f4a67914710be0395af534ff85f493d3186c983017ca4499f. 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/QZFZ52143021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5c7cc36c8d4cca50ee08aa981f673b4887248cd1573c9a665c612969d95ddd. 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/QZK6L2172266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce08630550b47fbf8026c95679deb174f1089f87cb1e848bc473ca1fc93c8398. 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/QZK6L2172267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34690aeb088cb74c8571c5b80de854db4bdf7cd5aa5c042b3b4451c6ee2d683. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QZK6L2172269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9971eb722dc8c87770070e4d8071fe321bfed6a2714aa5b43804fb786963fae7. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:34:08Z), 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/QZNWW2188952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd74da331dbd8549bebed833ef39965790f6e72abec9812738999afdfab5bb846. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/QZNWW2188954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1830ebe5d03f5b1cd58f0f4ac69dc0412144609bcf0f825aebf89a6de8febf51. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZTAU2120156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c8d4b75934d166c0063e30c2f9f140bcaf2e29c059c9181236cb95ba63b255f. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZFZ42228022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95f1508a29fc365663112061a1e2b247067bb8270574db8342fa2081a508586f. 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/QZFZ42228026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabbd2ca1591f856d63aeaa7325d7a7133df0912acd352e6a859aec3fb1cc89d9. Chain 2 (Bitcoin): anchored in block 957681 (2026-07-12T09:09:02Z), 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/QZFZ42228028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ae800f5739aaec833b8fe681a629a05c458dd38460ec28246e96b45ae4d7d0. 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/QZFZ42228036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b3bfab87f2983a9d823f18a7d4a9f92b92a59b90c85b5c33b5faaa28315cd48. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QZFZ42228038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1830ebe5d03f5b1cd58f0f4ac69dc0412144609bcf0f825aebf89a6de8febf51. 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/QZTAU2120156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8429df5ad68a758d58df48b04fa0134bde7ce645d53b49ce171eab24ae97df3a. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZPLR2205844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d7dbad3a4731789073266446f798469e0924e9c5118696bba0d855103c6df7. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZPLR2205845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa02e9664feca930075d49ddda11b1cb67dd134fd8b6d8a8f5fded3e388faa1d5. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZPLR2205848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534b66ba2306b594b4cbddc0125465c51c45789faaf644ca31e098ff9446f06a. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:19:29Z), 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/QZPLR2205850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c8c47af910dda1098a92f7cd742d032f819fefcbbc1aff68becae20c34efe4. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZPLR2205851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bdf50d5b6740b3e9c5fb16a5dad0e50b8cd08c5b9d3fa86c00ce5f55069539b. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:27:06Z), 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/QZPLR2205852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e6e474afe566a9e4b8d6ae4608c81e46d99bb1abd91e75070bc587be7792d01. 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/QZPLR2205853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x018cd7ec0df43bb426c8a005aee178d80bf975dc21b3ba519193be50e0ab40bf. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/QZPLR2205857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x529e70228946d469791f271dfa8450f1ed268efc8a0f4ed6dd22aee0ba107aa2. 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/QZPLR2205858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66dc0607e197e8ed32fd7708c2247361210944793f9619dace950911813f9199. 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/QZES52445604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca76279659c6e5cff82907d1cb3d37a38daa5fb45c75c03d4e75a1f4afe3ea3. 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/QZDA82480384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc822265a68285c1f3d6ff0ba701fb865f3398b663c2288012e6ca4a68954c3. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:05:24Z), 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/QZDA82483069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b66e9a45ec975215fe1712ccbdaf413c27d638d42e12c745fb53cf411819ea5. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZWV32499039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b54823386702aa255e1bea362b14a5da1f29aac5c9de4ed1ecf1e686956084. 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/QZWV32499055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27761852eca7bdbd0728cef68fe3f975521ce2546ed0b9f477a0f1a4d59b653a. 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/QZWV32447964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60b51bdcf1c3c28a801e4a56d3c977192ba503e53f7da5201a913cb641758c5d. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/QZWV32499074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef5e2c3f864e6616c99a20d8793ee714c7a6afdd49a50c603eef5437ba607e7. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/QZWV32499081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b52d11f2342f603fb68003ab7bbfbfccd0c63ea5319c7cec314da7451df8476. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:47:19Z), 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/QZWV32499085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1f2966fcb7c397104cdb21a118d0423846e70bdca91bcf596fd4ff004a6ea3. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/QZWV32499106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2422a11b9d272abb58a8b5c832cd37ee1926baeee12bb83dee9c553e2b928cef. 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/QZWV32499090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c06ec3677bc79ce804dacca540ed5944f126e6100670fb6aa01f396735e47f. 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/QZWDE2530992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeadf0d4681c3faed75f834ac6e9ecb105cf835fa096b81b3c7c810ce2bb676e4. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZWDE2531045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3736f7695b2117bd6fe6f09ec521f849a5cfd752e368084e53a9a63452789b2. 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/QZWDE2531301.