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 0xb84488f209cee464b389e8aca64250380ed107f87bc72ed6010624f4366d7a58. 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/258bbb1b-a09e-4512-a44b-ed216fc2da1c.json and https://artists.proofprofile.net/proofs/artist/258bbb1b-a09e-4512-a44b-ed216fc2da1c.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 0x0308b15b88643471912bf1b570f6577188414c14241022c83456e1141a6abc59. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QMPU51251702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x118d42b2abf782005dba08745988d11d29526e42c9ec99971c9d9925c4529a73. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/QMPU51289705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb430ed9e2ba08006c839742d88b96a1b6fec69aba32f90c5036d0e2affb46d0d. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/RUA1D1803484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87289c237a01e66e07c485f6806e10e9a21bce77e65fb49b6c25721b2f8fe123. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/QMPU51278573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc20101f359fb2de0e589b29354773cfe04c4cfa922aecce5a1c3db1d57236197. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T08:37:45Z), 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/QMPU51278577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2edc5f75e403e6c0f2073cf9b56327cc583248df85e535917f1fea818cc780e. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/QMPU51278580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe910095a3d94095fbb5a0cba2e0ee6ba22c77e68c0dd53246994b488d6a36e1b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QMPU51516093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7d098c05acfbfd33951abdb4d98ef9c19b7d2c5295f847bcfd30550ebddbbd. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QMPU51516094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x962ac092862b1205f418a3e370382ec94cc4c27c9030f48bc96d92955b12c0c8. 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/QMPU51516083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ef516fba09fe7ff21e25cc2a3f7869002ddcfc8526f9f1af8d1f474ba73b09. 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/QMPU51516084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b59570a3e8298a24d37d397daa9fbe91167018488fd79007e966670b0b30a5. 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/RUA1D1802007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85bef94534d4cb187c036f355982f8e73bb07dec1168b3073ab18226ea291c4d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/RUA1D1801996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8acc6f14d0205a0d1483c7172404e3408c28fe9f656bcdcb51925f23a13af0ac. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/RUA1D1802000.
Юбка (Оригинальный саундтрек к фильму "На районе")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed83420c8b4d324b427c1898b694cf2ffec3d21c30c380705b0016f5ab3251cf. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/RUA1D2110245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22853b241145c77ede29a74dbf2963d3f2c71ad0f9a15d6216756c2c0c67facd. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/RUA1D2110241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb54e3faf513de68759d1c1b34867416660637ab473c88390a5ea3ae726705a. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/RUA1D2156225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x378be1c5364de197870ccaacd5c13b314893261cd23d2b2ae242ca51032b5beb. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/RUA1D2156230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2543ec3c4096fa6e6b08afdf2fd8aa4be115c448d8d4d83c1076dbbcf0e0378e. 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/RUAGV2304231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0190f0d328313c462aa559c084f3747da444f988e6588b6c4c874a30cb7f992e. 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/RUAGV2304993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac967c44228949db857abb3367949881ff29617ee2743c3e9cbe610194925e91. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/RUAGV2401634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x521e6894ee21858fbfb6b4fc5fa90beb4c2b38565402d74870b71e9fa11a9870. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/RUAGV2401635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942c81695b207a806338b49192faaf23f1ab13fa9d6232be76087b40c38eba37. 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/RUAGV2401640.
Сокровенная (из сериала "Бедные смеются богатые плачут")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2afc1e4ae31694337f997258c16fdd27443b2c88a3dc6ed47d8100e759c85720. Chain 2 (Bitcoin): anchored in block 957810 (2026-07-13T05:55:46Z), 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/RUAGW2509520.