thumb|T-Killah. Alexander Ivanovich Tarasov (known under the pseudonym T-Killah, born 30 April 1989) is a Russian hip-hop, R&B, rap artist and music producer. Early life Tarasov was born in Moscow.
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 0x5bdac053c5f4e2bb5f73835cd82928a61aa4b5fdf3218a0223e686871da5e68b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/00a37899-eaa3-440a-8f3d-f723461de6fa.json and https://artists.proofprofile.net/proofs/artist/00a37899-eaa3-440a-8f3d-f723461de6fa.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 0x7b93d8242bed5cb5cc782d13e4ad879a8e64e98c598fef0373f7ad98052eb9ff. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:41:41Z), 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/QMFMG1532940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb4762115adc2c51043a74d135c3c8f378ae103e828a79457d305830984c551. 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/QMFMG1532941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e2fb57950fa5b7502b5032671bc156605ca8accbc1e7deb4bd030a914f3ab0. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QMFMG1532945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50bc2a247df7077f672575723491bdc66b4c7b6264ceddf2b551180e7f2379a0. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QMFMG1532948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d1b04411298f345b9462d93497f8d316bdb14416ece9ef016a0c8d811fb87e0. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QM4TX1742560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81801d99346ef2d354a82934f267e333b47730b13aa8bda9d9b8671fc5ce810. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QM6N21739837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33b3b64a7feeee9acb4a40c64e2d13634b42b4107f9246bc97a7691b94f2d64. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:06:35Z), 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/FRX201831082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8073a64a03e22ce443be4a3240129acb676b990c2ffe420b96857dbd7ca3739a. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/FRX201831083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f7a1a724653889738f8d784c31b596170ce6caeacd8574be75a684dd3005d57. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/FRX201831095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x081577daa65e0ce844b754e57d84ae3fa68ed13c6852f8dcf22bfc65b88ae65d. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FRX201831096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af23f4f7b366d21313cd087723dda5932d395b120125ad51b028b37613aee80. 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/FRX201831064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11084794c57ba75e86c59d1a675dea2cc89ef15bb38a1b9b10e01d35aa0520c7. 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/FRX201831066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x777df93696cdf3c871d4261ec8d3830a74bb51c31403518e05fd39c824502762. 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/FR10S1906214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d6d20bd726dcc8a45c1cada1f19156f662ecc489ddc2cd84421ccb1f020f65. 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/FR59R1960560.
Тайны (Dj Mephisto & Shrwd Remix Radio Edit)
Гречка мартини (Dj Mephisto & Shrwd Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd60d27d67ca178b0d36840feb4edeeaded877ff7304fba5626313edf14b995c. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/FR59R2049065.
Гречка мартини (Vadim Adamov & Safiter Remix Radio Edit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe8d70ee3f885e249163a64ee4d06f1da137fc51ae88fc484f4eb1606616c4e5. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/FRX202038488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95dc811db6713448c34e1fbea5071b9be3a0e9b3930173ce0e44ffe2e36d0021. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:46:16Z), 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/FR96X2098800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x334f68d9acc4107fa2f3f478444484696a269785e6e1e91e1b602eac07f46077. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FRX762052171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1fb3a68a383df11af18a961e55f8204db427ff82531f4656752c3ed8e3b4a86. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DGA062045845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c6c66240f3480b0ef44779664da095e0b953a4fa024b75256334ba2af18821. 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/FR10S2277215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e07990dd7004628b7f00612ccb5728ce53a60ad710572d4232363e95b59d09. 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/FR10S2138949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e6b3487f72003692c7ff87899fd85fb9ac42c4bf40072c9dbb8ad34c70f9b75. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRX762210301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e07990dd7004628b7f00612ccb5728ce53a60ad710572d4232363e95b59d09. 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/FR10S2138949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b2505b9a20c3eddbb37746c9f16a4955ce059b7076ca8040c74ed817ba310ee. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/FR59R1906996.
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