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 0x3be52c8a589df570f5252783ab1304409195cc6d3c96b02b17d403a55fc9a04a. 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/1f1b96f4-30a9-4187-954e-b340fa149704.json and https://artists.proofprofile.net/proofs/artist/1f1b96f4-30a9-4187-954e-b340fa149704.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 0xdefd7d2ea1fdc6d7427a49510fb5138dabae0ff196817e7cad5d955f9069fa46. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/US3DF2476891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6edf60a9efdbe6d7d1adb63198b8b542f35bf0077c519bc721bd421fc6686f0. 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/US3DF2476892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22364af01b8c9ddd7c176a948a417eea639c6b7720a83c4abba0205755b31224. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:08:03Z), 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/US3DF2476893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e79b4837bc53827f4773a732b7702768eef5054ee5aa706651bd6c79e399c02. 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/US3DF2476894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93edd77f9590072d9b5e720ce94948367a9616b7be667a7659efd6d42a6766b9. 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/US3DF2476896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c81eedbe75ebf1071b6f8cfd10b42f095b2337e85f4c039a5dbae54d9cbbb76. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/US3DF2476898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac80fac41de0a485c6654256f4ff7b216d96f607e3c2f1da6b0979c2642e27e. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T02:41:21Z), 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/US3DF2476899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39be0a75a3bebf083a628a568d0ea44af502d63f3a721b3660cd641ab326514b. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/US3DF2476900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd97ec4a0a635dd0a0fa2f7f58a4666e4099a810edaf85fdf76c702efd4a15539. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/US3DF2476904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36713fe0c8ebeeefebe0bd5c4569c644235a2c02a1b22109a3b55dc4fd3f8dfc. 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/US3DF2476905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59bcac297b59027c2e9a14c420ffec7c1de217f812965aaa1ab6cd12d6e256bc. 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/US3DF2476907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5559675d8f0cb02a7c79a61e3eeff89384e95ead82148027e2feb687aad1fa7. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/US3DF2476908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93634f78d23afdffb392ce69b78ad9090d2b46dc4c5b7d77ffb7c2f4b09cfde3. 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/US3DF2476909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a7cc163b8775614ce5522cfa845e5388a855d9e66447385f497b9e0d560c29. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/US3DF2476911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d59b0c1d939db7018e38746ecfba0b87990c12d30d7afacfb2e5faacefe06e. 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/US3DF2476912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f9d17b933944f8b009fe63fb9dcb7ca89e90ed557adba18e11e682212753ca. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:19:50Z), 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/US3DF2485606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa300f2c5f154b24477f1af307bac891be58ef5eeda977c852ccd959907f2276f. 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/US3DF2485607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283cd9c6b6a66a72f42b52c5c6506c7ff372f0213d0f2dced6128734d36fc7bd. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:39:09Z), 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/US3DF2485608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a45ae8d6ee5b2e9ca91a1779e0549067b013b794714c0842d5291c1ba609bb6. 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/US3DF2485609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac9da1f18822bb79429257d68f6e3a3f6107bdd5050182f66183f71f6a081fb1. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/US3DF2485610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a8c191bdd36032ed423382d6e081340e849c61211ea6f35957b31be68f3dbf7. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:18:46Z), 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/US3DF2485611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e00e84065eb4210f02f0d800f53fa9210801b9ba1e0175cb8adab23457ca28. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/US3DF2485612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb93f44db733ed6ed6f12b911c2ed77388c8caaf4aad6bbf24ffebdfd0d075c34. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/US3DF2485613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91fb4e668407371572febcfefcd1c71e0b344b84af2fd0fa3bace979fff7b74. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/US3DF2485614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5385a1ab0294faa568773ff3ba342526e47b784dba84286b19eaf0b7f69f7c87. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:57:37Z), 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/US3DF2485615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x536340ef38f0501c54416c694e8e62fa005c8fb83ae1f3944917a0b97c0d72dc. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/USANG2431608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f36ea41078a439cee3dd49943688ad012485acfe7b3c04a4deb59047783819f. 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/USANG2431611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39d992b5dcc9a3ea459a2ba4134f57bfca49c5618044454ca41b298d7df8c39. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/USANG2431613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468adf8c4ac473904a8cc64c716809831f86dc3361ca505a28f1352bff32277a. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USANG2431614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a180737368e0f28dbff7367c964467aaf964191adf856ec45d6b37fdaa11432. 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/USANG2431616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1ace0702dcf6f212409875aab6b1b96486f730ea8d418b6e4b9854686583b1. 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/USANG2431617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfdf9f13ca66bc7fb88ee48f30e000f2efc3f8333edd35ae93f6c59260de8aa3. 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/USANG2455468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac8e8fc53b6f74f19f689688a8f2ec95260d22a21d40cc346bc8297cebc32fd. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USANG2455469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e16ed2a5e0d3fd3bd4df5a83f169129ae7a06568a6f1ee6074de574e790a66. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:08:58Z), 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/USANG2455470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf114c595dc3bf00245d66332b4618147527662d314fe95446ffd09bbc78705. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:56:55Z), 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/USANG2455472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8664ff1d639b48c085fbb711b215f76c9aca2c3d1ba87a6cc242dd6f2a1df6d2. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/USANG2455473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b2b166d7c807f6931f491a9185a9c375279fe4c4ff8d61aba05f8d42a364222. 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/USANG2455474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a50a0bf33c67e0350f8021b9dfe842234466a51302d7c2b6d781dc6bda402d. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:55:58Z), 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/USANG2455475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd2ea758b0fd4c79f4b542a09a4645317cdb8ca9f30847d8bdae83cc53a2e2d1. 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/USANG2455477.