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 0x61ba3148a0ea8dea90f4b1a08161e3cd67ca119788df129711d75baec5d656c8. 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/bac0bf31-2050-4eae-9583-d0bca7c0fa94.json and https://artists.proofprofile.net/proofs/artist/bac0bf31-2050-4eae-9583-d0bca7c0fa94.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 0x665589d2c91d3384c6c4fe722f68f8103004141ded13f2205315b349d850d8eb. 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/FR6V81579667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13507652a19bd1f3080692b09ec9fdd3fbab762a848e785e819ccc2f87c9f539. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:32:33Z), 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/GXD7G2588894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x406739f3f270852abc5897444a856b6166e9894fc24bdac35109df66e9723822. 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/GXD7G2530678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e38e0c67c19101d040b89c33c143c1676efe2a21714beb03ea31c2e130d321. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GXD7G2520115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f6804823d2169fb15f0faa9c76764557ef4b168a75a747df9ee246228be381d. 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/GXD7G2574488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ae88472db4c264f97e5206871c392b1945a7fd26d47e6413db5438905b254a0. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/GXD7G2527898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39d81bf90b3f484c7f9e8441f4485da16357ee9797609563b426d52744109b4. 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/GXD7G2537325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10bfd2599ed141fe85b7800bbf736df2e589593427eaf76862b93ea599544c5b. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/GXD7G2509126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe5fd9d36575111e0bdc4a7e3ec6eb459f83289d726d3663978ffd57b9ef9837. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:28:07Z), 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/GXD7G2549511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943b1daa6915f46ca23744451fbf4dee0aa89481d4e26f3be81dd2fd5d194eb3. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GXD7G2569405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e668dbf1a39e4bd249112dd11d76f82b12384e087287db9ccb64981995d2fb. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/GXD7G2578725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x513709e17780403908a75ba7302085f3585306adc3fe5c04c22cd076877906a3. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/GXD7G2547651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2deb45d168322000e40eb838ed0d54fb44b346452b1d9de754075b21eb11ecc9. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/GXD7G2526011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55fe582a3e0f563b2a193e647af47fbc71827fdd810d48c2ef131406ef1c688. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GXD7G2500631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62888ed54997448df0e845d87d734bddae9f6f90ee1b03d0ae25cd5b153cc4ea. 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/GXD7G2557731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b95d7a34124e0c2af3fd67a4b2e9f6f591b562e5a980b1ce8ed087a14012c1. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GXD7G2503079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3321ebbc0eb574bdd7ea697f63f9f38ecab677510375b5bf0dbf046884adb3b1. 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/GXD7G2574899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8804e763ffa4fa142f75fc2a6d55609ea0b7a9c9c11bf1866c25cca841e6a4c. 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/GXD7G2516130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e7a8e595a044217e20a7e27fa3b49c7274a9e4f912d91c1abb840957d25142. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/SGW502598871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb1e0c770570eb4e3aca3358be7ff5329e2b0a604220edde9a98b08d14321ea. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/SGW502523346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14bf62406b0860b1a5de99ae69b521132eab6178ecb6c71924708454766bd1dd. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/SGW502568755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b3038379227d0a9006977b8b14a827717f2843412b098e48c909a9954f4b041. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:36:56Z), 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/AEA3A2142178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52541461088bee471dac919715712a1b24cd4d2998089cb95fd8e2e3af2c6381. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/AEA3A2158153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf4879d81e172061f3021d1aaa7e4173878dba71c153ae83b8bcae5f587f468e. 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/AEA3A2115779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0296ba62f888f46d376f7a5545127c901e4585632ad1a9edf316e4e222b1f986. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/AEA3A2129201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ef0c6588af14a37dec8d8d9db3feb2e7cacd58eb24a56c1a3b242f26a9a6fb. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/AEA3A2158742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab3c4f4fca124f7e879d6aa6dae17f1a13964bf46ced4b335b1153d1c354f95d. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/AEA3A2106547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2988a520d04904e9c3ec26a3a141e0898c82a30efd4a1a629fb4b577ca8037. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:39:37Z), 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/AEA3A2193679.