Marina Valerievna Demeshchenko (; born 13 February 2000), also known by her stage name Polnalyubvi ( in unspaced Russian), is a Russian singer of indie music. Born in Anadyr, she released her first al
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 0x722bcf601101da1dda10dab3d8cf56bdcdcbe69ac937c6ce1a914b839ae90510. 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/6baf99ff-fef8-464b-89d7-22c14ac0d246.json and https://artists.proofprofile.net/proofs/artist/6baf99ff-fef8-464b-89d7-22c14ac0d246.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 0xa15e21aea6a49a7f0ecdd0df14fb2edc1c8f93e41b0659c83f70d8248d14fcf8. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/FR59R1885700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe88c75d850f03888768f9daf55fba9378cd226e821b2b9f248bc1bf1b52dc202. 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/FR59R1885703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eff31de65b45137d8ac5589d5a118e239ad5b0fe00a45dc87ffeceea9fd1558. 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/FR59R1885704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba4470f3bd6751eeb5661242f12774c828af4ea118e324eae4032c3c3352762. 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/FR59R1885705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd522be2facc563a75c70ccafcc7a7eb3f5652403da226b1f431e90fd8d75aea9. 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/FRX201808784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce99624b93130e7d80ca86dc75dfa6cafadb426cd996f8ddf0e61cf3ae15c8dd. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FRX201808785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37bd4191580cfdab46d9ac53621054f14c74efb18ea3cc0fcd1d577c1e84b0f9. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/FRX201808786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x538a991a26fa4f3526cfdacc51941271e6f49d1218cc179993aaff9bd5486891. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), 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/FRX201808787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x155cc2e5b1152090d8bc74bda5b31acf8f9f9a97cefdbc376f72176da7cc62ba. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/FRX201808788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x823b0b4e46c45d241130b8590f1e31881e87ee138d50568201f210353b0c7b7b. 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/FRX201808789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6df89ba8d180a99ae09f902fb99ec8498d820dd50a6eccf2d8651777f6a262d4. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/FRX201808790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bce39aa53347d90438fa84ab34ac06b11b78a7790746c7c0b62b449f400e7d7. 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/FRX201808791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x965c6fa9ab380f9ba011bff1c2d213319645470cc4d8994a0a6d5b81201fc761. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/FR96X1987179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0146a7f95984851a1a7cb6436fc32db4855ec235ad2f475bc0165d5922523c93. 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/FR96X1987181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67433a850516dc72502ca18ee26713de6283a3a80f7a09e91953c54443f9bb79. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/FR96X1987184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9fbfb612cc37feca992d763411816a88b62f89ad977407305805ea0fb07cfa9. 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/FR96X1987185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ea527db08502cb44e03eb92fa918bb35d22c5ff9a21f165f0707a752be43bf. 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/QM6MZ2056554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31da15cc3e8077c71d8c9edad820f7ad2bce077689d7e7fc57431a1d5c1beeb9. 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/QM7282055859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14dbe46add198d08d5cc4e2a0ba09bd688a5175709b37b159ea6ab35cdf4a1d9. 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/QM7282052249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc665d04d5589d33f7611877da0ca2da44457a1d82595c62f98c425c8ac85f6d5. 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/QM7282055872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9693e10360af35b10b68bbded103488f2ae650c8f59d3c0029dd59cd4401c2e0. 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/QMDA72157125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd966d6bb937d975f74e1778c6c9f0a79bc6419dad0fe5a0d5ed97c3d0eb5fa64. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T05:43:55Z), 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/RUA1D2300835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c6fb96571b409c21063163e8eb36ed037973decad531fe72f59339cbb8c057d. 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/RUA1D2319889.
Взлети или умри (Из аудиосериала «Четвертое крыло»)
Сквозь трепет сердца (Из аудиосериала "Железное пламя")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x454e47cf221d41575b05928fa537eff9609f8bae3cbd5bbea6821d1496e01e07. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/RUA1D2549717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca419eb758eb007a9b844d69cac9958482b39a4263d9cce69e2ac034bc121c45. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/RUA1D2549718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb4f4d501427b83c6c9612345ff503bfd1502d53ac826b916b5b2f2280b7f449. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/RUA1D2549719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e33889e1c257056792ba5fb210f6a5449f72b2f70c5bce62d31758ec32786e8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/RUA1D2549720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6d11f15ec4e5ec23b4a07bcebe96e72a31ce6921d058dd55c7438b9b47c5dd4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/RUA1D2549721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e3a79632a5a81acef503f5b60248ff5b94143317495517ff09a7209b058313. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/RUA1D2548765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc0b3fdf1e2ebf1b6e2caca686605656db136d689de90efa590a69fa89cf083. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/RUA1D2549723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ad96eaa73d48fa06d1e4347889fa8841510bcfcaad43295654ce06d576b96f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/RUA1D2549724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da5b6baa483aab3974954eb7856a18ee74db489074b6b630d1a49aaf7165adb. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/RUA1D2549725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc471c6d1be30210c4c4cfef6938f9070e6c1b9b5f4fc1e83e45a20fac246e518. 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/RUAH62417855.