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 0x86adc33b4e0819b46a3a15fd672d997883611edb1d8c92138daa7f92a7d883de. 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/2786aacb-a923-4d38-abeb-b36a410f170a.json and https://artists.proofprofile.net/proofs/artist/2786aacb-a923-4d38-abeb-b36a410f170a.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 0xc84e1b4835f71e73d4b89c97e6a26efadc9f1cbbec4b0490aa0b590f47d86bd0. 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/GX8LE2540295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e3ab66c7b7fd38305348cb89410d5a638e8ff18d2186d92dedd5f262595d8d. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/GX8LE2537630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae88decf0cdc946865f2f36c258b8ff4810fc9c50392f633ae35493d4d03c500. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GX38U2577238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae7e27b8224205f4b4ced64edb6093e8bd15a08e017236a12c3419495ba42ece. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/GX38U2549688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x550c81697b95bbfaa3425a211c8f6961a896f6bf369397663f574dc49d1615da. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:45:58Z), 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/GX38U2591207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x138624203eec31525f4d61ebb46a58412d3859641a66d94db3f15f0804dbdd22. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/GX38U2563342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfc7bceb2a05f30cfd58092df3d737d319929a0b859eecc7126a6120f3ea83cc. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:15:41Z), 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/GX38U2579561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9afba22d2046e54a84622ddd9d8f5126749647dc3657ce768aa0478a24befd3e. 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/GX38U2561489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ea72a8c1efe779bafa152037d87d209a3d8ebd4b7bf1b71f014f062db934a4. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:51:44Z), 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/GX38U2579556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9787b1fd0b88d3a997bbda68827b9b3cddda70456df7fdc81507f4d00a063882. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:25:53Z), 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/GX38U2569765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a921f91eaa07bcd82fb2893a271afa5d405d2deaf0ffa6da6c1245ea7df132. 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/GX4R52599859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c5ad40b623d360fa2cfefd8e51a26890e7b032ca91e362cb7ff5db605c2751. 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/GX4R52599407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13164a40cb34dafe564a07e5b5a0dc7da58942969ba654701d5a99967bc84edf. 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/GX4R52555006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f259a3befb138310d72e4926f93d31469a09a29b907d44ca3bca5fd5cc12700. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:56:45Z), 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/GX4R52548515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d3a4f308e79435dc7c8314ff2feb81c692dfb1726e83d31085158f5f8615b7c. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/GX4R52553603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe02e5c7c6d374a8ed74165b7b5c66a51ef4d4038ff21206cd31a64236cccdb52. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/GX4R52519961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d9f92fc7f16c980bf0da020f572c1c37df0eff888ca327bdb6729ca948dba5. 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/GX4R52517422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5e915e65ffaf40f465f8d0afc05693a25118d6cda374261fde2a03df243622. 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/GX4R52540618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef1cdde70f3f359f6d26f7a09bb8d5a8d0825b6c61d4c628948f75eaf5bc604. 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/GX4R52545114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x430570045acd235810422767aee2adad22a7f22c4abe4994e4a443c2ef62ac35. 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/GX5MX2536768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x872bfef9b2229288c8b6f4bb3789ede3ae1e022e00881188866010df75b1d1a9. 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/GX4R52513085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f796ed29a8990991e9229cf755a1a260dbb5fc3a3935a6565f7fc1f2ae4a498. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GX4R52595863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7379d8ccb3975942f42d919afe59967e659cc2ec15971821eebda138890850b3. 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/GX4R52562683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f0b91c2cd0b09913599de43d197c18941539812179c1642c687f00471f1d71f. 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/GX5MX2566093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f51c9c36d0969ffee95a96cdc74f5f33215f7ff9116513a4b9c1706ec064a5d. 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/GX5MX2533958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb66716ae2158439e25a3f9fe9e925a2b0c7a99dbef5cfdd9085760c4ee7767b4. 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/GX5MX2528011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d2aac580ac9e1eb97e69380fc1fd0f309003269132722d4cef2726200d28984. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/GX5MX2554903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x061b9426219c951afdbdc563e141af3d23546ca34cbc11db454747af28ad659e. 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/GXBDS2544885.