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 0x886f886ee8aaaa7d4fe7fea926931dcf2b1a1407f5d60295782d9fe057ed9309. 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/49aa3ee3-74f0-4943-b644-0e1b38cc60e0.json and https://artists.proofprofile.net/proofs/artist/49aa3ee3-74f0-4943-b644-0e1b38cc60e0.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 0xb763ec5dfc8bdbdd9a235bd82b4235f7682859614b78c028a13f6e776c58f95d. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/SMRUS0052786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e73252dbd94d4189bcce28c31ff4fbe7b08e77b97baff5392aff94484724d2c. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T22:51:18Z), 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/SMRUS0052791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b41d5370ebe5144e1fbc8f4a3d7754404ef4456daea89931aa84de9a9a1bb3e. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:36:13Z), 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/SMRUS0060872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703fd98c33389df5c806b24faccc03a0dcc6ec62553c893626ed1b19c6ece543. 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/FR10S2089321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d785c4591a7917bbafe8256fada387d5ea7f2e1e5c534835bd986c72964e5e. 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/FR10S2089323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb62524e59049e3e0c2b780af4f8fea99fed87388d030119b7edf37f145d66521. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/FR10S2089324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c2912be63e2f32d4014b631ea5693ed88af8bdc6011eee5ab4ac7a4dff94e6. 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/FR2X42164555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df9a509d05eb629efe663ad572678cab10e69efebb349d2fe01f8158bc170ca. 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/FR2X42164556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafcb0f60ac24d037f37fe235320a500144008e6a4ea1c8f33b40508a6177c181. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/FR2X42164558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28ff685330f565be24c8add532a653f35d4d7c65725a1507cf5187665786ee8a. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/FRX762003695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e665cef2361167a6140435fafbf8bcf0d98c7168bae82cd12c1278e00eadb6b. 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/FR2X42164564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25761cbfe6ae68adeb96c4e3e00275bcc3528511aa8796c5a035250d6bdb1c30. 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/FR2X42234199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf14fc6c7b4be261f3bb8b4979296d8c71123128086023c5841db9fae2665d91d. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/RUAH62407627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c189d3ae02a921f5c6336b9c63d0d59ae658c31199957fe7f49eab0ad7d20e. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:40:28Z), 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/RUAH62407628.
я просто замёрзну (при уч. Артем Ермилов)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc7f4c22ab5031eb8013fd84036690a95962ca5de96efb85f47eebb2baeed907. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/RUAH62407629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551e7988c8b39615c2becc6ab36af997a2369d3ae51b84b440b33eda6698ca73. 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/RUAH62407630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8760dbf584d11ee1351cdd501e63b32fd9a6813bf80100b109844ac8636f8be. 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/RUAH62407631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb3a051b1a5a22320ee75420439b1839182a4c8fed9947a11e4fbc800a843a0f. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/RUAH62407632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x349a89fa09df323de3b26ed689a74ee7d742da80c05ce6836f54ac7f3f1e498c. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/RUAH62407633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb28cdbfa330c8d81d25aee0d6cbb17d9d6b1cdc663bd9bcac70441492f803a2d. 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/RUAGT2435316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e175ae5228f7e78e7ee6b0284c5f9c5646d0c45918c101c7cd0dd399ae11860. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/RUA742500601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd72d59b2940625dedd100f1f9b7eb62dc676977b0c71ccca4b1df5a24d238b83. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/RUA1D2509928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a3c11f0b0c6235d1008eb38835d33abd2865ddc0a2907727e93c75a95b9fb2. 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/RUAGT2560106.