thumb|Divine Liturgy as celebrated (along with the Eucharist) under the Byzantine Rite in the Ukrainian Greek Catholic Church Liturgy is the customary public ritual of worship performed by a religious
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x486424a5d1079bc4ee2db0ac1078a02c2eaac3aeffb4501a860b8d6d0688e383. 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/02427d56-6108-49b4-b3f6-04d15b547991.json and https://artists.proofprofile.net/proofs/artist/02427d56-6108-49b4-b3f6-04d15b547991.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37068faf3a20aee2e06042364ab76c773ad108ec131dc1eb896f7f57190cbc11. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/USWEX2000143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a9148325ed32f3a5c49c985ee9c3f1808d97a782fe1373ba828e5c05b966791. 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/USTJ22358101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab64bc6bd8f4d587334d3b06fc541c2ea9d7bb53f09c72c4f781cdbf0e47bef3. 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/USTJ22358109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7492093fc437608cde03f2086fb35e9f141e92f8de292295848841c9cf418a78. 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/USTJ22358102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a821579f03f0568c80fbbafe1bbb18c26f2a48fc13424c329a462e52acf6d5. 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/USTJ22358110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x997d6645119a69bd881302bb99176dc383ce6501c1591a6b83be1fa290bf8868. 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/USTJ22358103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7599987a9ac793e4b610c2768da006fa805bec863a9a089d9c22253290182a1. 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/USTJ22358111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x543c783525627b2167af349e45201b092f4459ab3ac101dbfe083aca78921fad. 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/USTJ22358104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c33fdac7dce2cd34047b4ba5ea484bb53b2b545ce81eccfc01bbcdb8e2408bc. 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/USTJ22358112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe217ca31327dff5ea9180655d3346afb46b9335eeafaca78a19e074e2bf4fa44. 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/USTJ22358105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe432ae5aec71e54add22cbfc6171d1cc9fa1d8327ee445803b579a63ee664c9. 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/USTJ22358113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4edb2a8e06cc979047f58d59e7848995c9e0c21fd92f11fc13b8fc0226a20297. 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/USTJ22358114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6717e45a8c39d248098c76be5286cf0003a27bd49e9358a5fc50922feb1e58c7. 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/USTJ22358107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72df9779d330a1bf0070cb243074c42390f13b37fd73dd5179b413aaa6b93636. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/USTJ22358115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6faa07913e267a1584a0b412a0691062dfdbe52595d947f4981bfb0c75473cc9. 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/USTJ22358108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a637c4659a1d98c592dcf2f3a6f3539c29284f77dce615d67ea3e3f0ff6865. 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/US2392000678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a048174ab95c7c71ae29c48ba1e006607396b211804a9d4c285f85930f8b9a. 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/US2391900467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0fd7249369b128bf946dd9f56c653725a1081e3bf49dc87360eb3504ae69046. 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/US2391900468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa25df9bfd997f44f93fa58f6f32ab2fa2b4af88ed3d4a91b31a4f85a05bb508d. 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/US2391900469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b2b10606841c793591c36f3b26d39c2ed31a620c0cee10727b638ae17c323a. 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/US2391900470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f577f468581f21aa7ad5e9099cb5c12732c81d04bb79c422a645f333b21733. 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/US2391900471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477c7f4dede23318b0a78481c87568a28c0b708e07e61b91e8e84e7d062c0882. 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/US2391900472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49bb00333f14dd06d79e769c172cba98f7e16db6fd752a933bfa5ff42d3d367e. 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/US2391900473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe184a2480231fb91768bd4c5bb7515a051cbe683eaed869683cfe2305b221a32. 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/US2391900474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43070c64af942e709f6c3f261304a0ef0f4dbd3253690628873cf55eb260fc76. 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/USTJ21537802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a95974f5fd5a16c3b0e2e7a4f6a5203c5c97e6ab6ff36bf3edcce5375a216de. 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/USTJ21537803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf5d0282ccc517227017b969df7d1dae42467f7a56bf8968fe53ccc57f4354c3. 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/USTJ21537811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d3236506606b6fdf73bab0a080d002eea5e09a45caab3bf29333a1c9ff8e7b. 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/USTJ21127301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x569ab20630dbf7b639d4ea254d90eee3be6370e3c850bf1b26dd4c607ce73314. 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/USTJ21127302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a59ea44c7f3a86beee04198a6e4ffb86ff0fa758cbb4e169c84d7a530e4f2b. 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/USTJ21127303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x266ef612543a74af1f10421fdf510e5e4f106653172d0e287402b4006d9c0d22. 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/USTJ21127304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x669531326a001e748cdbd6fb694737f40b0542176e3ad4ef552ce7ea4a96e724. 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/USTJ21127305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac93f59d748da74519e7512a2501ef40a5d05b7c31aa98db149b814de35d30d. 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/USTJ21127306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c951c4382806ff9471243ac09eb8b8a9b5b55070641851c80a64e041fcf011. 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/USTJ21127308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f982208eb2033d0846be5421d0e3cfa99bd3cbaecd96901dce996b0dcd07d3. 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/USTJ21127309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8330da2b305844185cd2a41f15900947b65af4ed99c1140de6e08d7acfa58db. 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/USTJ21127312.
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