Polovinka () is the name of several rural localities in Russia. Modern localities Polovinka, Altai Krai, a selo in Polovinsky Selsoviet of Sovetsky District in Altai Krai; Polovinka, Chebarkulsky Di
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 0xc4d7785d0794fc11181db895509d72fd786d7b71d65420c53e4b08dcb5952273. Chain 2 (Bitcoin): anchored in block 953754 (2026-06-15T06:45:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ada42d63-6ec8-46e2-9c0f-84f81cac5b0e.json and https://artists.proofprofile.net/proofs/artist/ada42d63-6ec8-46e2-9c0f-84f81cac5b0e.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94377573746ee83a9b481e756937be5a7f673471a963cef06c102bdcaf5b8201. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QM6N22457363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa43b24f077f1fac046746d9ba72b7ec50bedd36546d991ae90f636feb1c3b5cd. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:50:38Z), 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/DGA092475750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b62002e60f5c3b5cc2e0991077836152e1c15b79639260d1e8c7463a3729860. 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/FR2X42527351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7414ea313cf29cacb0938c64ec900fd36026cb671be7e1f788a5a87f157e829. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:31:34Z), 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/FRX202523949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa704813f5a629535b0afc2312b07d52b9e50b8600b52d07816024de27ee2ed1a. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FRX282582815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e02908fc525a4fb211baa4a8f2e93b1ff89a8d3b960ee178374fc94d9877767. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/FRX452560252.
Я думаю про тебя - Iseehell pitch up Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f829fc1aac454380a54f63f8a110e709e122002db0f90ff71051b3ff215c384. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/FRX452560254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f56bddddc982844c02784a06b6a0f7575c520c2bd0867c5428e74cd2d037238. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:06:41Z), 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/FRX762503188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd74c21015296ab9d1177cbd2bd75baf1502bd3c6525ab946f1abd1d8bddc4983. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:11:31Z), 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/DGA062523148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f3ffdfdd7751c6bba4c29b8d7b4bdd88d8d41e1b68ea89a57f101c533a98d13. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/DGA062591304.