Polina may refer to: Polina (given name), including a list of people with that name Polina, Revúca District, Slovakia Pojan, Fier, Albania (also called Polina) Polina (film), a 2016 French film
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 0xb4b44644e75e3d1d158365e28037abd70dfe3dce437106812eb9411b7a672aad. 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/0674d8a5-8d0c-4428-940e-99c57dfc7a72.json and https://artists.proofprofile.net/proofs/artist/0674d8a5-8d0c-4428-940e-99c57dfc7a72.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 0xe66985b889be1646d6947f14d84ab1c2d0fa82fc5dcee081061be2a883b3f3ec. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/USUS11600245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fd6805cee12baedc0970cacffb3f206883808ef3b227ee7ee8560450e296204. 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/USUS11600470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa583f16571bb56d285d7378138d37ed886f349c00d0d0d1ea27ec631e0028dc9. 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/RUB732010733.
Поцелуй со вкусом текилы (Alex Alta Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7053c9e82a2389311040bbde57360f0fa1811abc4eca6708a6b1a1ad54a14406. Chain 2 (Bitcoin): anchored in block 958495 (2026-07-18T04:39:02Z), 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/USWB12104851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e5e7896821a23f930df5799c7532e162e349534115df1ec6ed65a24e2d7b86. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/RUB422300185.
Любовь у сердца в рабстве (DJ DimixeR Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f6ecbe1bc0c76eb55a1086fdfaf4be0709d25c73b98ec95f08933ea8d9e0d56. 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/DEUM71502573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ef035588c8ba6a9a0622e235eac27f799cb811684e0b9c37a54be9e13e4bbb. 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/CAUM81900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebaf339d94379b9803eed623d566a67dc0162926305f64e760d9194bb8428a0e. 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/CAUM82000180.
Come with Me (Deadmeat) [feat. Polina] (feat. Polina) - Jidax Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e92c2f51d04c3e6a10498432134b6d0bce97f19fe702ee3e6318d30e3111517. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USUS11200645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802b3c10afa557183994d7da28f857c26f686c7d623bf88e642f5ed4f5a91e2b. 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/USUS11100631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900ea47068d4e9760c66847ddde1de815ffa3f5f075926f4aede4e7cc891532f. 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/UKHEZ1800025.
Book Of Love (feat. Polina) - Mr. Belt & Wezol Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dfa5a2e5331415c79dc8a3d1bcbc57c92330844fd991686714d4e3f805b1b53. 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/DEUM71503446.
Book Of Love (feat. Polina) - Phantoms Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd059e9ea0aee1755d1012b779cc93eecf6068ed13044a21f92dea766614af63c. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/DEUM71504183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9201770adb36a0084e96f05fca2ee23e233e408f47dc27419123a0a52c22ab7. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/TCABU1492635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf07f714201d4127121599d6e2729d62aaf665d5367c584599959e58645f5b1ba. 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/FRX762161764.