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 0x924a4dc12276d176fe7917a951a83a9179657bc5113a04a1189331b44911dd1b. 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/93c427de-6a46-4762-853a-0b950a5eccae.json and https://artists.proofprofile.net/proofs/artist/93c427de-6a46-4762-853a-0b950a5eccae.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 0x8e44cc2505b733ac205e458f775008d9cea6205820b8c951c4f34565b86709d6. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GBKQU1359284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf9654552be54feaa5ce1af260e23faa25dbb2772dbf5b65685a62a6c9eeb2a3. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/US83Z1324313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0c9b62cdd9bbd455df926dd37eef7e06d3bd1eade000f65d366f34d20ec661. 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/DEH741305213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef5660e06a8bcb37ef6238030d647cd26c652d3f0e4313c16bfdbae166eea4ca. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBKQU1416882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73bfad9ba84edffe78df8271e700dc52011d7441d5f2f2f5d435cee9b7a6229c. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:01:13Z), 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/DEH741407859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3b95cb7b682b5b275a22a0af66980c81bff53f0555d451e993a00f87a64d9e. 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/DEH741504768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc52ce2b7c20ddf01193cc16e4b948438f20f2cedb3ba0aa54294c82d86d92210. 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/DEAZ31650158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc69833b2604bcc1986911a73398d247462b4bc531c9fd635861cd3639a0607f3. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:01:21Z), 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/DEAZ31650159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5dc292195db52890339bfd8c15a974e752b06e7e6737092cd28acf0bef24f37. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/DEAZ31650160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e3c9d097f5f0c8dc8816fb6a2b36fe31a2d39be8f9f400718af31c9dd3f4c3c. 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/US83Z1649368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3389e0cb39cbc792ee5909f75ef1f75c8e9071f0ea59b49781e8958af3da5a0. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:33:11Z), 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/DEAZ31640043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee380cf79e88a2ff87a53b2a200f88da3d6cb19a8c96b703e18a8b4dd1f9ab0a. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/DEAZ31640046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f51c35e786a97cebe4f297bf7083c3c70dda8b091908a935344f4d10087d742. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:08:24Z), 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/DEAZ31640047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x962a50c93e3f8b7d275fba4dc804bbf22b7803979d9bdf0f0d95de105a076b01. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:12:02Z), 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/DEAZ31640051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd3093ae11036a3355c2cb920029fbc43d10c388ee53aaad961fdc699a59ecd7. 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/DEAZ31710745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbceae8afd103e2f4e0167c4aae4043a1cf1b3ec4c3cf51375049357a02d7643a. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/DEAZ31710749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03559a587cd712743b0bfd173c25ba1a2e363f69fad69fe06b0e42aa9fe598a. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:09:20Z), 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/FR96X1771041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e987ff650d8d5a0d266142edb4b29d51a970365f84b5077659c20927859f59. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/DEH741646936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d213c1d7170016b57c837ab31081fb3e971f254ffb45d24e898f7507a150de. 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/DEH741703294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x612cac28c4e277d7efa9396da3c2ba4687dc4339b927eb2f2722667c567092eb. 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/DEH741646937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a563b58a9cb2c3c1f8bfe00d2f77b35b1bc85723ad2a593d8e013a0ee7e14f. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T03:25:51Z), 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/DEH741500999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d633d41acc6ad190185a6d7cb0e14a09381403ce0a9d0677d2f605a9b465486. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:04:33Z), 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/DEH742316563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71accf87beff0361540a4a51c0834abb5ac5f9804132929d3be6ff1349f6ae6f. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T14:59:31Z), 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/DEH742404133.