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 0xa6bbd52224cb87775f1d98a095c468c4fe218de921e6844d9e9cbe97847ef1ec. 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/f724984e-75c9-4b8f-b3d6-135f6d1f2cd3.json and https://artists.proofprofile.net/proofs/artist/f724984e-75c9-4b8f-b3d6-135f6d1f2cd3.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 0x8fafd8df1a3186c7723fb8bb6d8a40e7863136db8e7814b4f4780a0fd32b8dd9. 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/GB8KE2306907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f92719d04a39b7084792f8ba829038d527f78406857108446762bcc266f94a. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GB8KE2323306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf0dd6c9ce79e90acc9d5cdfef0762ced01da64e498dbb0a50ad32595eb359b. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QM4TW2408648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed04f5b7e20de4110aadc444d9ae2588fe8f0d3557673e12c8f01830409baa2e. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/US3DF2458616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e6bcc36eaef5f663d550300d8388bfed5269821b6ecedd444998d8e42b943a4. 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/US3DF2488008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22408197d5d83cbb326ba3dcda44a2c7068028e55eaae10df27587a1243ac135. 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/US3DF2488010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc31c5d1380f69be31ea5fba8dc92d6c38d0a4ff11ec87df097de1e2e5c2fbc49. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/USANG2416056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f729285f36fdef40bca04d78667905fa40918c1acc6f10804960c09d29f7e2. 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/USANG2416057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39d93859f6711dcfe60a077340afb2640a68d4ec39b3b0ffeab153421685cfa2. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:39:00Z), 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/USANG2442888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd95e11cb34f846c9f846dea959679e820d8fcc0e8631ce4dd0f3ec11012c245c. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:10:36Z), 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/CA5KR2496801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05280fcbc747204af465321490ac42457f78a3e93c11af5915955be9d03f771c. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:55:08Z), 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/QZZ8A2485985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d87ff81b61b3a70bf3519dd17210468b0ad0331f8e6ad2af60e1db0bf62084. 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/QZZ8A2485987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb210e67c8078897918753ad92cc7cfa74ce124262e89a971ff5a3ee5f4dbac76. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZZ8B2439286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2127acdd8f11a9918b3f13d415974f177ab770279e2f3cd03f08456507b0af0b. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZ5FN2593597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b3981cd1312e1635ec4ab8f190e15c38671f0b464c910af2574dbc7c544dd6d. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:30:30Z), 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/QZ5FN2593599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c44930905e770c0480bfc5d85bf776ed6ecf0e773b19d5a9febbf8c9369b873. 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/GBRKQ2501746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d8f86d285da9d2338cb70f8611ad16cc424eab02eff0bb7516f52318df81cf. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:11:35Z), 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/GBRKQ2501748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c0dc22f1dd869a63ec8adbd65182f0857ae71b9734f10c4aa4d15e1f27c24b. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QM6MZ2581857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1369e42abd292e797c3a3c46a359abcc3ebafe770a90e41fc42db3045004381. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QM6MZ2581858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6335603269acf9b20973905c2d7353ba2197b8c292c048463448d0300d9f09a. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:59:30Z), 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/GBWUL2512873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40361b94412155cd7adebf410c2f2ffec8c085d13407240b6f1fd9f270fe2157. 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/GBWUL2512879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac5cc64ddbcd5c52eca6f8b1a103500b57c568f171c70c0484e4f4aeddf8382. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/QZTV32510451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x626ed0de4e2893c3a64eccf44ded7395e8b9b34c1f2075f04b5dda51612aabb2. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QZTV32510507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78dbbb8ee2de1113f7993a0fc6057d149771b07f9d80b69798ebfd5693b76dec. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/QZTV32510529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb938ab90d0ed2194bfe3a5f7acf00e733e41a92c5f5dab957ae2a02742ad05. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/DE1ET2383278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7666ce69fbacc81d1008dedabeff94139a0d0901290253a65e4921ae5a5731bd. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/AEA3A2156560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf417db53ddd4c407197e4d9adb8a47bc46fa12e6cd2a1906149a88d59fbe01e. 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/AEA3A2116838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62635c26b2162186438474ed9e7e1070cfee91651727ac62671dcd80624a6267. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/CA5KR2537390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5470a217d5f1b5fdb1c3791532b2e3b0d8cfd0ddbc65fbe78d2357a9e52a0002. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:12:12Z), 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/CA5KR2537391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee2a64a325e064dc244360b64390535387560802d1c81d96c5ba2c760c52ae7. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/GXHT42500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e013700e21497a091a45596936ad9160a968bfe69bafbac0b336be49cce723. 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/GXHT42500021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702af4e42eace27095b8dff4feea0d4b2ad29d14e59775385c5c13d71188f013. 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/GXHT42500022.