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 0x61eb24c8f3413c8d12d4181f4ff32305fd08c0b5d8ea240fe6db067b3da994ce. 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/8e81d291-089b-4aed-9a1b-fac396c5dd49.json and https://artists.proofprofile.net/proofs/artist/8e81d291-089b-4aed-9a1b-fac396c5dd49.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 0x5a14720a46217f51572e31132f9ca3b9962f20b2659f7caac80923093f870e71. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZMEM2101456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x960cb62c5bc2b01a25796e9ebbcde2930053f97bb4f1d5d047bf106e54a7164b. Chain 2 (Bitcoin): anchored in block 958579 (2026-07-18T16:26:17Z), 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/ZZOPM2223575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b5d800898451e8fd81b12516ec8e98042d27056cf2f2bddba3b6969aa7de7d. 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/ZZOPM2231588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x762e280d7f0f66d605e9b93b1536653ccfce85d93c6aed9292193fee06099492. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:44:50Z), 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/ZZOPM2237217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d060bcde9507f22b8b27a33e75297e8471292fdef478f5e1ec02483e44cd79a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BK4DA2302162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195b5820e94f34f1d78f0cc33bd2b6bd705e8b8db42bc2de53eb11b082fac379. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BK4DA2307099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x515f69f9e23c830666c60a836799e58d6b07a6f66e77b2766648a3a4ee8e2de4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BK4DA2307110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a060907fa2136c7e6cc81ad01ad6498d2a131a26ae3a86aa28e15239f71067. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BK4DA2215102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6296d780a9a1895b5511ebc6ab1a2d157b2d50ed6cfd9ea41f0fb2a90d041d0e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BK4DA2301031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x429572f757ee95b6b3231fc9502d706124df17cb6701801773fcc7a598eeff59. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BK4DA2202748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d060bcde9507f22b8b27a33e75297e8471292fdef478f5e1ec02483e44cd79a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BK4DA2302162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e2a47876bb1b77d6b7f8d941180214db20ef441a6e9079fcf9dd7aec29e024. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/BK4DA2402856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c7c4da43025442ac60e5ecdd3ac41cad4ccfcbebaa92c2ad125bc6d4ed4c6e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BK4DA2411548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x597525aa2ce0dfa6d1078eff68e17e17e055b41b597646d3293bb6088c24d364. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BK4DA2413848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacacb2e1b66c8137fd1c1765f18681808e5ab204814e55bb2b53c2ecd99b314a. 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/BK4DA2413845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c7c4da43025442ac60e5ecdd3ac41cad4ccfcbebaa92c2ad125bc6d4ed4c6e. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/BK4DA2411548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c54e5a167c7ebddfeb247e64d5f9660ce801bbd7c4bb753a8c2fcb7f556a5b4. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-21T08:44:52Z), 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/BK4DA2413844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01dded1239989ead7295534446e65a86895a526f86ca64502e27959f60f44e22. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BK4DA2413847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d938b6ae140c098316b465d67573ac730b9f47b31442f4d24347bf459e1c935. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BK4DA2413846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59baa9d7e81f43185dfabad87f373d9e71c60a9a651b8c1f75c86d5b84b70cc5. 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/BK4DA2461236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde35bf686a69a483b7007ecab328718976d3147ddff45faa014b0cb557a3ef43. 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/QZTAT2569144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e5b5b487ffc1ce352effebb5e915ccb6ddda4a1999e111e2785560aa64c3d9. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QZTAT2569145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd12981f1074337b93663cbfbb579a9bd2765160555437c7dfdd8cd3ec641c4a. 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/QZTAT2569146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedac1b3bb03ecb62c907b22058b8846078bb72b680bd244a30e26ed72bcf5368. 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/QZTAT2569147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e10612278c7a961cde845a01a039e352960fbe7e4ddc6f9825ac48a0b743d8. 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/QZTAT2569148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435cbacd73398ccbaaf79096928eff31a6f40de1b848ca99d74294bbe3124c9c. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/QZTAT2569149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59ec535e026b50f05536e25bb48c4f0bc494e38c84f003cb7e6980b7ad07ee28. 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/QZTAT2569150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5218572ec67c14aac6218a85af5f1a990a84d5a0ddf34b056cd2a926411d3cd. 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/QZTAT2569151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc0948c4eb520d95d0e2040ce75ce953f0b517f3c73aacb63e165ca64b7e1f2. 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/QT3EX2571893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x508e785928c10b837e5cf66a53b57fbebbb0ba79d3870fce04df58ddba5dfa5d. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZNJX2368421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc56ca646cb2f4d56676e3877f044a8f313f90941231ff085046a494069cebf3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR10S2281681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x508e785928c10b837e5cf66a53b57fbebbb0ba79d3870fce04df58ddba5dfa5d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZNJX2368421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc56ca646cb2f4d56676e3877f044a8f313f90941231ff085046a494069cebf3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR10S2281681.