1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x82b946f624640e146b4ed977aff9af0576bb6628c56aaedd9bca9e616d10a854. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/32199aaf-6d56-44f6-9d89-9e64978b4d46.json and https://artists.proofprofile.net/proofs/artist/32199aaf-6d56-44f6-9d89-9e64978b4d46.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 → block OTSBitcoinBlock must exist at that height 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 0x671d775de0b9f093249f9d78e921a7dd88cb14d05e0c394a8efc9027268de0d1. 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/QZTAW2232986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6f8fcc8294e7514791a4a48b0f07322603f75fd3fcbc6ef2274ff6d142b7c52. 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/QZES52314272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9539d694c60e2e480a9ea56292b96eb602add93ecac417299a0b8fcca588c4b6. 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/QZHNA2366641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f0e55a8d5560b16b233734bb7f4f0b661bbf08ffdd09845a6c878db61436535. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:16:35Z), 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/QZK6Q2391044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54587df9b9682f1676eeda15dc69aa9fd67f3dec43496358c8996a2697e70a2e. 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/QZK6L2378324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c03295f2c8208e9f1e5571f381cf6770a917f1e0c8fa06ce0f6d38ac6c7903. 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/QZK6J2376669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x437a3ab16a3a6280451a1dba0a129e724bdb6494949f83a5887156c383c966f9. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZK6J2376670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90779f02965d592514fbed07edbbdb05ff8f30eed6ee847c1f3759e1a92f3584. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZK6J2376671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f91d5b8ccd93379d413202dc680b872e4590c00ae7f6af95bd30894c466b501. 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/QZK6J2376672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x127f76e983ca98b0beab06a0e00b2c39a90ee3e8351fd656a43959cc5393e9c3. 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/QZK6J2376674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3775c7e5c87a1209ffa0e235a6acde2d1c35e8a008c6b172ad23e469a8864222. 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/QZK6H2351936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x954e4107f491d19f4c95f2ef1ab45704e9827e64bb1ac279770c4a0a439fcc94. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZMEP2381913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289a4f1aced07fd9d8b2c843e1b6b2373b87219cfedf35a78db7e75dfff9654b. 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/QZNWT2364576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b23e98ebebf9756f38441ca0fe5315014f33be91c86e0ec3f813cc4261575f. 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/QZNWU2303966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce14874f086371f41f181ad0eae30eb85a9321dbfac1e508f0bc8710ab3a7c3b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZNWW2360497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d10f75e004b09582031605fdbe270e150f18dec672afe0c8c390740260a3443. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:42:22Z), 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/QZNWX2304118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81254e5ca7236b9cc4557ad2cd0c3b8e6cc0bc20b203b6c6685ce99219d7d3bd. Chain 2 (Bitcoin): anchored in block 957723 (2026-07-12T15:34:17Z), 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/QZNWZ2314009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8fc9c90fa5f2a310dd5b81b76b636e41d82c70decc60ca1bf594f61153b2f53. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:27:57Z), 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/QZTAS2310582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7334ad4597623ea52de531718124437e0775bdebc219a33055aa6f7b89ed753. 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/QZTAU2309760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa0cf2c2f5a62179eed1a3591cde6d84c57645baf747bc57a1b51eed449e6a1. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/QZTB52378039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e12345698900cb079d2f3391041e04d98aab6a10d7a383a612eccfde31e06dc. 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/QZTBB2361425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff12ce73c6b89fbadbc27beeb5af198e4127e3e9d3b47b64ee8a8a3a9fb356d. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZTBB2361426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f9a43c059a789cf7c7b3b3115bc5681b4dea6ef1eb8854b2c2b78f104da6007. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZTBB2361428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1fe22cc6918cf72bce2beb26cc0fe9c56f64fa6b336580d774a9bfec6c3d962. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZTBB2361429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf04fe582c59cb30047e1d5d4c1ebfad2163539dfd4b4c1b511fbb825c46260b. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZTBB2361430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5b0fbc99dc76f641ea7a75e6af2c790739bcfad5f486f2c42a40e103dd9ba7. 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/QZFYZ2446899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4b03fed78d2d5381ce56a7b2a1eb553cf54b1520baa5582e0776f468021e1b. 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/QZFYZ2446905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x493c9cf9d2896f3a4e50827025c437e5480935530e3c17b1ad970c3cf910a263. 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/QZFYZ2446906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5822c3bcc237ced5006e5f3dbb37c47119dee956704d0f8759d577838af19287. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZFYZ2446907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1acd10090d5501811d5f2fc0bc590cca01e8812f0d73ab6c0814c5465d1460dc. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:32:56Z), 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/QZFYZ2446908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed1a34e0631641fcc7f61c6eb91f36cd9269cecdb90c84e6e25e17a2d1e6d6a. Chain 2 (Bitcoin): anchored in block 957834 (2026-07-13T09:42:16Z), 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/QZFYZ2446909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92736a730c523947e0061dcacf609d8e3245a03e32422b15e578894a85167341. 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/QZFYZ2446911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x666b1566292da80e61cb1021cbf984f14266f55cca024735d966232b765c7a18. 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/QZFYZ2446912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e4682bfe5e82e01c877c5fa34dcbc763f9bf3e3a923aea5e525817f9e51f34. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/QZFZ62438140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81244464f929b1374258dc97316d437fc00e2827bdd607d5886aca589f78718e. 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/QZDA52485171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef4c0f566f2b7faaa414515162c13c054315841357adc81474363bce8d0dd2f. Chain 2 (Bitcoin): anchored in block 957717 (2026-07-12T14:54:03Z), 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/QZHN52405610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa490f01074270b65aa8ceb2c9fbc90aac42d20f9ae44dadb750edb690760b4df. 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/QZHN72412087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa490f01074270b65aa8ceb2c9fbc90aac42d20f9ae44dadb750edb690760b4df. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/QZHN72412087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe287b3fb9c1103a1b58f7f5a28f74bcd5ab3bc8025b2e87c59c49c0d0a5737db. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/QZK6L2418996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83c16bd0dfc9f3656b5b3347ac0313d382e6716030234a565a865a015708448. 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/QZTB52462193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd93e3855181eac72b63fdbb9c30b23e89bc741620f5d1568a02e4a2762f95125. 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/QZDA52576856.