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 0xf730d23f88c2273c7b05e6a2e6ba65b0ad6c69223a678e6e2810d5c865eb8001. 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/0c9f7695-2df7-40ad-8dcf-47611507c5b5.json and https://artists.proofprofile.net/proofs/artist/0c9f7695-2df7-40ad-8dcf-47611507c5b5.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 0x5add7e2bc437bd9ebf19e0f6ca1a4b41c4207185b54f1b119b878e0c9a080a89. 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/USCGH1784550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d79bd4581b79dd47c645858de77136e079f20edf3fc51a746675da49b4be8c. 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/USHM81876888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c313be0c87ff79cbef3a5ba0848d43eaecd44e027ee17e40152ec1836210b36. 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/USCGH1979898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61a33b19630ebfd63669a63f3120277ffe469d1d28a24991584b03c708ee69c. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T10:27:01Z), 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/US3DF2136479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x358875e363ac8961fa391eb2a642a8e6b938e9c3c2b42489186a212bb5302598. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/US3DF2167445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2f3a4abc3d138b722c9bb151744dc350bf04eded1afc0eb9dc83ad04b553fd. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/US3DF2167452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7686b2ed97e6fd8ebe3b302c79e255a085071d1372ea9b9f6dddf8d7b727d85b. 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/QM3DF2126587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dbe5bc02fd8a7ced69fb7916ee249d24781a6cf33fb4c366dad27d4615d83c7. 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/US3DF2167463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a443638a8d22e4b02ca6775b4b531914b50a61705471074b471fb19ed5f5bb5. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/US3DF2167467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5be58676efa3fb58f66df3af444a4735bb53e70ee8f94a385cf20e6459c7e380. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/QM3DF2127878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c65c1df15de4fa312a95fcd1236b41ae39d3aa6ea3637178e1d95c315c04df2. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/QM3DF2197309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x688e7fee0037961a8a86282ac0682d1085eca37e68b452350c3378c489ecb0e2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USANG2207491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55f7d2070c1c4400d4c1054ea417836dddba31903cfe6236407d7405453b0be2. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USANG2226924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe106f9381a52d553b060447a1dd512f76f297f7d8ff11e453159884790358d. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/USANG2259752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd95e6095713b26339e5550f2cafb3fecfb8e174e823440ad9ecb75f97cab2c97. 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/USANG2218006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bcb7cdc3cec08f3f89748266ddcc0ca36da81936a551998a8fe5ba4411fbfab. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:47:45Z), 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/USANG2226928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d2f21ae4fd33ac1bf645fd7cd2670ab14b246a2c52a526a51a4aea5b66b35d. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/USANG2226927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x148d61329dedf31b85fc5eaf129b5c4cb99397407a1209f4615cecc268f403a0. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:01:10Z), 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/USANG2259757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76ac4191721f57e33ffbba5914d8d2280b9466e0fb0aec5c85da6e2dad96ddad. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/USANG2278622.