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 0x51e834cffa44123fa79ccac4e8028d0edaf1967265a4af66e464e2b5f7186547. 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/dbe6825e-41bc-4d1c-a7bf-0d71523ae6ae.json and https://artists.proofprofile.net/proofs/artist/dbe6825e-41bc-4d1c-a7bf-0d71523ae6ae.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 0x68a3315b1b7968d409ed5c3eee0056c0a553b0f20233294047ccf492d5065267. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:34:50Z), 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/USX9P1418150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89775f6046c33308e40dbde940da84a7eeaa91b14fa0f7be09a5f90521eb5f14. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/USX9P1418152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ec62986707c2215b3b5f130c89c20c2b529fc3be368716cf2242dd75442610. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/USX9P1418153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c13687d87c3a9c5daa87253a385f908d4511bd6b42b52e126595af961d01e90. 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/USX9P1418155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13910b5338a17c03969aca5d84745b421d79e830aac2ad036ae16067d7c0a60b. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:03:50Z), 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/USX9P1418156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c287f746e11b09e10cdd19e1239f21e888e5e8338503515488037428cdade33. 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/USX9P1418160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6415c0827c6e267b29bf4c9177173af41f181a5a57435a7a9d097bfacbd730a. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/USX9P1418161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc376e3b4be03e6918c1427673f636a1bb2aae8480e28d2ae1db1d19e092f9377. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:35:36Z), 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/USX9P1418162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb54f1538e3baa85d1a6c726a82d7a087239a631796176976933c4ed5f498408e. 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/USDY42277672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x787ff76d762f07612b362a236e4ed3a814e1de57bf793407d93cc80683f25f99. 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/USDY42277674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x699a04b6552190b9b74693b6b9facf95aac4153ee1b6430edf34b0ea694d18e1. 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/USDY42277675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9065984edb82438bdd3d4ae013b21c7154363b8fdbf83f5f25174d10c0d5bf48. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:31:23Z), 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/USDY42277677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245154d66b1a39f6f4c02bf2426f56dba8a1ad05fcc2cfec123ac47ca4b4cfa4. 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/USDY42277678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c9eafc41e5487eed144d84b52e5a6189301eaa7d8abfc9f53229e88c4cad2a. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/USDY42277679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8866805b59e045feeaa18c258f4955912ac76924153f42732ce474795ac276e0. 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/USDY42277680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x773c1408016297269d1d0000328b5a728ddf0e13b0999686b7dd93b50cca4221. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/USDY42277682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf723eedd80caf4916757cfd3acc9708a489b627d3bd58db4a9cddc47ccc82d1c. 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/USDY42277683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa368e271511098442d0445dbd27e13252b36ecefa1d8b4c2b830db345fd1551c. 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/USDY42277684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2fdb44c159ea533e2d48c9ce115bd1f537a2eb7199bd925fc3e2fdb9b68b09e. 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/USDY42277685.