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 0x8be60bc409f916742cf3741727074dc48f9e5854679e72384645b118913ba0a7. 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/a3bb1f1a-4d8b-4087-a247-80cf96c893ae.json and https://artists.proofprofile.net/proofs/artist/a3bb1f1a-4d8b-4087-a247-80cf96c893ae.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 0xeee67e7355e4559b58623eadaf4dd509e2f5846eed75eedd220f17bd23216d28. Chain 2 (Bitcoin): anchored in block 956426 (2026-07-03T01:37:49Z), 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/TCACC1415396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4be84bc895e14c8db20017a0141b4e24a2bf1838c978767d0713684fb3dd17b. 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/TCACC1415399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda60d1408785d3f109d1f04b926aa186c5373368c93acc06eb866ccf4e551e66. 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/TCACM1688280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cdae885e3faa2a2dcc013ec0516062eb2ab3c617d09ab1f06175db41d822f1c. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/TCACM1688290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9386cdcd83e119928a9de72b0353ab7ef17a4cba2cf84bf416c34a421217f1f2. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TCACM1688291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9543b431854bd14eec128ea509729b878ed1c40500e4c75938481530c7cfbd6a. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/TCACS1646075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73703c0687473da0e4ca72f5968647ca738bb8d2c3c2e0b726a67385e49953d1. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:26:12Z), 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/TCACS1646080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa008015723443e99c684847ee7f4c10431460df0ea07bef6a9e4c558be787719. 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/TCACS1646086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ce026eb7ca3da6388054d94c7486a124f9465d15e2bec6eece365011f15158. 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/TCADI1714582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf350c2734f8711be3985eda510d2f56722b6e823ea6cae00ccc6c88e8299f428. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/TCADT1831712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd9a6f9a33125a9e2dcd5cc4fcad4d3cb33cc01cb689c2c9ed6e139ca3b3804. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCADT1831721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8055c1258e8b5a7649e284ea3af69242974e88d3880250f7a04bc1fc87c4598. 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/TCAEO1923736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x628ab9d833cc5011d19ba2e66b9b1ac80c6f84cab255e8adf21c638b58e90c2b. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:59:22Z), 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/QZ5FN2095264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e79c10d3166eb8ddf03aa52a53d2f3edab5998789be6b08588047c44b1ccb58. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/QZ5FN2095279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd15c2a5e460fcc84aa3c22eca5ed1fd16127cf335e60a75f007b1bf685e118. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:05:00Z), 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/QZ5FN2095310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975d6fe6d0ba2ac708a87d30088133f40ec5e085273bdad15a55154a3d97e65c. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCAFX2193654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be92814a4eefb3b524dc4014ce81cc21e793726f8a82ecd482b829200c74654. 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/TCAFX2193659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f5fbe008abb7b74612f92b185c52cff6b503db54da3e2a965cd9108c0712da. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCAFX2193699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e6973d861db2077d0777f3bb0c47e818ee6ec0ead234318eb0467219b3ceb2. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCAFX2193705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d61e9847f41a0c0d59512c2c57cdf179804274ee68680e22634fd5052c9f608. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:52:42Z), 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/TCAFX2193737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf029e691e880768437a20887fd3170af84cd195643041dd124222be31ad0a767. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QM8DG2044616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ade42c2ff8774790a6b684c3f98684c1b64877efc12a195f7635eb98a6cd74. 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/QZHPJ2286253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa1a8c1897a2a7f6daab987ae47f383c0bd36504b9886ae58e8afdbbb1a60b6a. 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/QZHPJ1977546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108193a315963dd75d492c32a8212da4b78fa96c0b1943a7a580f4ae0c2098e6. 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/TCAHA2342831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef9b71fe2259cb01eb1d984537a3fe0e5ea73ddad97c6bec536f8e0c77689c2. 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/TCAHN2323217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25535cae27bf73e3b587c5e17b52a5301f6c5f95242be53be15808fb88d409dc. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/TCAHE2378742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x221bc18c6a2ad44bce3b6622fcc757562ee8382c8bbff798df45d6394127065d. 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/TCAIJ2466584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc976570c2e0b7ba976bfde61f3a673e841457b2005c9e9413ace62e2fb0b66. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:06:16Z), 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/TCAII2466591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6178c63fe1f2d43263bf836db29b0eb328f60131ef5472e46542e24c1673e06b. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:43:41Z), 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/TCAIL2436527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0bc8eae537872b7e66bc87c5a5b224a055206a7f99be567f069ff43976c9be8. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAII2466581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd37a380dd7380e2f113a07d114971a57e7a12c873494254e2995cecba4a2da0. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/TCAII2466565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368dc2bbce269a9358deb070fd0f5453d5071b61ad382c0da69f131ec7ca1a82. 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/QT4K52564034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60fe40373ba226a32c7241da031dfeee074d094c450bf0de08a61fc8f176e9aa. 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/QT4K52564035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb573e37c4cbf7f4fe69ca6ee432a10db15b283c2b18d3c5047dd6dc294878cc8. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QT4K52564036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d25cabafaca92bee77def81fb258845127a2d44c4cd43122fdc02964684600. 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/QT4K52564037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6acd51aa7a86f47849aab59f8ebf18780cb89bac2ef585b11f322b2760e14ea7. 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/QT4K52564038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0db083f94a9c7cc29327c9514a0701b9c0b34dd0320bfe5e4f4e23f531723c8. 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/QT4K52564039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x332c651c4d654dee105c4c817df4006df8a4083a6acd451224c5d937117a97f2. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QT4K52564040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b5263536054c30f5e3cfee1e533795e7f6092937e9ca2570a42593d19e914ad. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QT4K52564041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x663e460e81272f69a389285cf0dd6690ea5693da8526d848a6787d92782e4134. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QT4K52564042.