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 0x8f2d92234e65132cf40bab58271dfb9646d1542357b2088ff8ddd97813408345. 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/8ca40384-25f5-409d-9eea-51725b26ef79.json and https://artists.proofprofile.net/proofs/artist/8ca40384-25f5-409d-9eea-51725b26ef79.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ямочки на щёчках (В память о Юре Шатунове)
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 0x9236d32e1507655d8cffd3f7834981e627212f8e2145228205e316927195c06b. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:43:07Z), 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/TCAHE2339583.
Ты в наших сердцах (памяти юрия шатунова)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf683f676cb53d429b4d69e8b3db5049f943f64a33b5f255fb5c6e586d87ae66f. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:49:42Z), 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/TCAHG2353361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d1d987869f4a1acb9851a1aa919273a085f82a9b42c04f25c9eb2c057a933b. 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/DGA0P2359868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d2595e60d978917b43a35ecc7d2f5f5410c6808d89e4f073bde8abe253bfba. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/TCAIQ2409812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa265111c6c1f982b10ec37382731a133822846f268b3cd2f6bee618497aaf2a0. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCAIS2409795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4424676ab3d4d2110ef8e1d593103ebfeefddd94c6d968c44c76c03f622f1e30. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TCAIZ2410011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d2739abac1a959b41be7885bf9526a2e99c38d6f5c4b7e164b18428db4b6809. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:51:21Z), 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/TCAIZ2496551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b72e772644f31b720ed5acd6665c70f46724d8ed83fd326128f1260b55f31c0. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCAIZ2496596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73e1e2f05960764ba26341a553618e679cc85b9aff7ebd01296c345ac7f058d. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/TCAIZ2496758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52bca11ffaf7e47b158fee38fee52d3f5b9b9231128b971a99d02522a804d66c. 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/TCAJD2438091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b36934ca95e1e0769f6b33c04177dc79fd983f5b12e49e34d400f0082fc4bb1. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/TCAJK2516611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa0706ba582d087af77f07cf8c73ed626db2699df4e9e129b7bd32b0feebb299. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:47:09Z), 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/TCAJP2518791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa8c094edd047ebd4ed846f2c03bc12a5313a4f121383fc52d9d225369bec65. 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/QT65W2579585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a4a0e3dc6108c5271b2b8885642d8741eeb31480d284546ddf925c389893fe. 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/QT65W2579689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9accd9ce4e74b6a10a990583f140aa7fd6d36058523adffc87483752284f72f6. 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/QT6622560994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30242e3d180c946d05232e3e3ee1de169f8606975e6a389dbb8c79980ddcf927. 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/QT6632554087.