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 0xc5580d5a14072bfcbc04792f9530618f6136af42842f6557201f70bb1b18dbfb. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b0d7e88d-dcad-41b3-8468-e30f8f5feda6.json and https://artists.proofprofile.net/proofs/artist/b0d7e88d-dcad-41b3-8468-e30f8f5feda6.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 0xb78bc0b52f5c10c186d20860d55703a182d073bac54cd2dd4c8e7dde7ac27757. 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/FR2X42263657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab6817f80ffbf059352a025883c5da6b87b0bacec338a32dfc47c04b118152ae. 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/DGA082383803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf61b6102c5f678f845e46a64c050115cf28c14332f832d45abf270ae7fc3e54e. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:19:52Z), 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/FR2X42273758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d11cc96b9a4e1db97196e28da9f4f532e90f077ab4fdcbcb5bf92da78a840e. 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/FR2X42273756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6daf5a916b4d01671ed66870ca77f1888caf736bcee6e8cb4b09a6b56f4f6f89. 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/FR96X2247252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a9037aa3da3f7fcdba0eab3e0b912a41671e8d8945537095af0178473dfab4. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FRX282288720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed86044cc066af6f11b4823882b10d0fe6eea1ea336c0e42f42aceebe32f0ad. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:07:47Z), 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/FRX282288718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0bfed756bc8b393c8a231c7d2f8ad6cec9eefab7e1b774b308f49fbb647ebfc. 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/FRX762236104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfcca416721f45d80e07d38735246334774c42a61f66160ea44018917aaed636. 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/FRX762236037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0844872e1d38ff95814ebd9679c1fa8957513593f3c593bc7fea99637f82617e. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:38:45Z), 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/DGA0L2380620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c8d0c7f8983dd33278c6dc20d69f7bc04264d11a78073074d61bcb6c548677. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:27:56Z), 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/FRX872240263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x383d8e3b7a5b2aa5bc443df19c0355c943fbd3cf80cf8c11fed17f045b61b021. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DGA082225896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d440d389bcd67904ac68e3815396db223bacaf685fa26cca2cc07adad3617b. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:11:28Z), 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/DGA082209783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f24f207447ca22283fe112874426f1f65f79074042196457a6a6d05a1a8e53. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/FR96X2348924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672406f4b837a44224b35d34e060041f712db65d235054d08105b99005e9b61a. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DGA072365352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf36f20ac390decf73812e7d52a21f5356bff3abea34a8b190322a5c4fa1b87ac. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/DGA0Q2373826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42b09be7293d05038b2fca003e388405dbcedd84df9fda0fa75696a24a30017d. 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/DGA0Q2374597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c3cdeb87f0ea804c8648d68914f868d926fbf31b2c1524c8a7b060e625d61e. 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/DGA0Q2373813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6df0d6f2b5b88aaa9997ce435b792d66cedd20fc4089063e3319e0b85af9ac50. 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/DGA0Q2374593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19439a5dc67e15d50f417e62abdc879ad5bbcc2b8ee9659cf5729ea65be6c1d5. 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/DGA0Q2374596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7060a9e38f5ba535f9ee336a4374db74ce66cf4d879aa3d7c1d615832a805e97. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:19:36Z), 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/FR10S2473941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7962fb3f39ea05d5ae96189eac53bf2024697185d75ff8a985029d3e52230b. Chain 2 (Bitcoin): anchored in block 957526 (2026-07-11T06:03:28Z), 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/FR96X2480654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc207806f8b52725bac816dc0ba60794662b0675435f1e1baf9ad7a4ed3f79469. 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/FRX282482560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e22c18aa82a0f453a1b40bcf91e3f66c41f95d730d0ddf6fbc3b42db754926b. 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/FRX762400809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb69188fb5cface85d42974a81a48be85d1ffe03394f1894af5370f0c350182. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:10:17Z), 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/FRX872426803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc74c4a96d5c21f49c8347ad1e1cfeabe4f946b950d2829e2d371023764b3fc5. 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/FRX872426252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32605e372e6a071251120ce927e0c3dde4c8a04180333661e41ab34f075db98f. 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/FRX872426236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8881c7be23fecd18aa73b76464d5b24985520d120d67f5bbe629aa4411b914f. 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/DGA062495663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca76285aeaad09d119d11089bb4d01e3615802da4f47424badbe549b462dc215. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/DGA062495662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a0baea5055b5198f3e48ba3546e5d3c4223f8874fee74b3c6b90af276b9c19. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DGA0M2429198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b11350904b7077ad5efbe8015eb44c05e15e3df56b7f90fea571b76428c209. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:48:02Z), 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/DGA0P2456071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e6173edef56ed328057ff46cd11f3daacae1942467b0d20ac83c296a2640a82. Chain 2 (Bitcoin): anchored in block 958143 (2026-07-15T10:15:04Z), 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/DGA0Q2416347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4834f3b40f6fb60649fa04237d0b2c53da007a201c36217bbf3d9981e131b692. 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/DGA0S2421900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec1dbaed607d2a7385c51c4fc3dc31b459a4525f391c7a8a40c041e7a72299c. 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/DGA0T2452637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b16112c18d7c7132769241661ba0e7de970ca597fbdbf4c0087d189cbfbb54. 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/FR59R2515292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbecfd81f63377d395f582f1683431505679805773eac568136159c1f139889a2. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:01:20Z), 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/INA7Z2512238.