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 0x47dda53a5535e18aa12bcdd856aac7274b1bba45aa67e8dfd3da9e886f3298a2. 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/664982ee-cf2a-49bb-9dfe-2d2ebcb29129.json and https://artists.proofprofile.net/proofs/artist/664982ee-cf2a-49bb-9dfe-2d2ebcb29129.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 0xe6fa63b31dfbce42aec8cf53bda60b8b9d8e27965c86cd319ba76b3c57b5d90c. Chain 2 (Bitcoin): anchored in block 958124 (2026-07-15T08:13:46Z), 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/SMRUS0060027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x178f7f9d8a34c1aa659ed6fb1e4bca3d7cb0752cb10344928ea8375630d9187a. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/SMRUS0060037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x675f7c9add79d0fbc3596656ed7a610e47b98b3205717e862ee2d72d09e42881. 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/SMRUS0057926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9557f12b66f12b7c35016744bce15958de0446ddc3852583535d970797f0a63. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/SMRUS0057927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c458eba264966c4030200798a9f3353287bd17abd71e3279f840a3b8ae35900. 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/SMRUS0057929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946637ab4aac8c073acda8a7300828851f4c9feaee52cd72b187b546a7b73cb0. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/SMRUS0061147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa44cfd2e9c576ae3cb63536b3485fc4a39a6f7ed91095579823358ce3989e511. 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/SMRUS0067021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcead21bfe9fff53711f24be1eebe99c6b252cb01264187b02c6927e8aff3973f. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/SMRUS0067022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2085caa3c866f1f656a6020de55bbd40572e270c352e30bfd0bd0eaf6ed3659f. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/SMRUS0067024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97f7beaf54b663a705f135a11ed6f8e2bc1621bbfc8b802b61a920bd21b2f25a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/RUA1D2265187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bab07bd4a62b9783133ea061dfbbb71f7a1fb6e3db01a7cfd1295813955bf19. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/RUA1D2265189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde8853764456fa670e2bf98b8749252d1bc0763a8970a7792f0bec0e321f6237. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/RUA1D2265191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9cdc8958c5c84d743fb69033d3bb4d9345fb390fee662a919e1fcb89f5fc7bb. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/RUA1D2265193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c820a1b28d6b223986143cef2a228e3da2ebe6810dc87a5e0d899e7b14da8b6. 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/SMRUS0074961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5b61e039ec1f79989654179580a80c01572bd3e0630dbe9b9799a8ace42359. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/SMRUS0078296.
Пять лет секретам оборотня (Live Москва 06.04.2024)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c1f63c33360ff93a9bea273f17b9ecc5b26f87aa250f68272330a4c821e9f8. 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/RUA1D2504608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f572aa4741d1f7af924a76887e7d10c11214f367ab2bf86e2a07f25c29eda41. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/RUA1D2504609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb98b8436052e518dd37216fcc032e42a08d4d03779ee3467c58d0969016ea8e6. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/RUA1D2504610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df58509cd8ec5163f3bcbeb3bcb9f1afe6c73f44df2657c0ba8bb18d66d9d59. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/RUA1D2504612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ad2d1ecf3ee51c3330356edef11192544479a44adb42436aac9d9ac1fa7be4. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/RUA1D2504614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ad3e51f68296ae596e54420d260a57e6d3a124c92a6bfa3c1e6ae3214e01763. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/RUA1D2504616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52648a406063ff8f18576b706ce16a968ad5d7263093ec4679e9a884d028889b. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/RUA1D2504617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5b61e039ec1f79989654179580a80c01572bd3e0630dbe9b9799a8ace42359. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/SMRUS0078296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda898e0947da9e7805b3170c332d5c2f35a65d3392dbd4c74fdef767fcc25b4c. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/RUA1D2573410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92fa89e0b6ce32ab09794066d71037153c1f9f9cfb8ca1644e90de36138fe14e. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/RUAH62505671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65fbd3df263bcceba7cc8d8e82be69788b513cc4f5b960719ee2355d8018004d. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/SMRUS0072182.