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 0x71c64e32aa0c2f8d0fca8cc425c0b64259d332248aa44b6489e316bb28e8a486. 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/f793a56a-9c18-4fc4-8bd6-9ffb314bb96b.json and https://artists.proofprofile.net/proofs/artist/f793a56a-9c18-4fc4-8bd6-9ffb314bb96b.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 0xee3a6c9fe7545f52ac41420cf2a3db2f276f660b3cc77b4ab60964ae74d2cb96. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:03:20Z), 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/UYC120800176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f05955482ace3648a615ce3f6f64a4e213d130a4c05e3cebdb17b2ef940105. 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/UYC120800177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd066dd0eab18d468d8da9121d480e1ca4b875bfac62c57ebcecdc6229f55dcab. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/UYC120800180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x255e60cf1f701221ded5683be903098d2a8e849911ef3f390211124e2918f9fa. 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/UYC120800182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f0690d190a4589283ed51a4d3dde026d3ef0cd323e86a40c3420748e10fbf9. 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/UYC120800183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2417bec73d92246de686359d06742651bb4a9657f34bc3e91d0599752c6b72c1. 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/UYC120800184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f17ce437c5e3dd1354cd47837d234d3cf1ce17026be91e32f8011ca8b22f6a0. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/UYC120800185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1703a31fc9a9092cc6f5ff94127b329e736a758c25006ad3cefa55e57783781. 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/ARUM71800037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91e27838edcd0a69182a638c936ac471604df7f8729d3dff7d7556ff907347c. 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/ARUM71800039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf391268847df000519d5ef93b06cec71a77212add048b210ffb4db46f45a0a4e. 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/ARUM71800028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a8473d75efd07231a7c205121b26669918c711adb2ff1e525d85e7d9decf3e. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:32:21Z), 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/ARUM71800035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6d3bc9bf211d4a4d497611356fa451c0c674aab4800fa4536e9c246d1f7914. 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/ARUM71800029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d46318ec064febbf222d496f0ab55e11876c05191e792e390ed26c5938c85c. 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/ARUM71800030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70cf43832b17c615b93e7585ff74135c11105ad0421b586202545cbda92f0e03. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:32:58Z), 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/UYB142020502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20762ac1ed300ebc98ef45ade12bcfbd6603dc3849b87a3436dbe74b1958e950. 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/UYB142020504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35296fe52a256dd8e33b9dadc6bf3f8066ae4465554c94816f79bf65d86e3cc7. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/UYB142020505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd634e4aa88eeba8daa5d3097083858e843035a8165a149da8d5d3f0d93bba73a. 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/UYB142020506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc681a7afa7f83f69a86a563895661e905c4a3109cadcd1b6aa28cc31f7fce4f8. 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/UYB142020503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb1dde83f92afa0aca9962fab2a485280af754e8487e53bc099dbca2162e7a7. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:33:55Z), 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/UYB142020507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x258d750c3efbe849ede46e0638483eb4ba90bf95cedab15875fe9ba2cc04f0ca. 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/UYB142020508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x972064ff7f36de5f3f910b535ff4840adc0f02004a34daa51bb252898f3e3f8c. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:55:52Z), 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/UYB142020509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b76f7f47f4ef5bf6f0ec5367d02231775b034c2760c4e611965a86ea2097bb. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:22:14Z), 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/UYB142020510.