Anfisa Letyago (born 5th March 1990) is a Russian Naples-based disc jockey and electronic music producer. Letyago has achieved recognition as a techno DJ, including being named as "DJ of the Year" at
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 0x5eb1d5cc1692a07a2e979432dd3398909fedc3dd8d09dc802850acf234f64f10. 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/f9e11d75-4ee1-4345-b1ea-9427a1b9820c.json and https://artists.proofprofile.net/proofs/artist/f9e11d75-4ee1-4345-b1ea-9427a1b9820c.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 0x53ec6ad8e3d81fea6ae62fdf2929bac5b72d0afd5341f0715f2f50673910379d. 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/AUNV02400037.
Haze - Marlon Hoffstadt AKA DJ Daddy Trance Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba541c9492267da5740f020dc66d0217f81c68fd26a1bd1758f7e9d871a5c217. 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/BEN582200849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e2d538da45244c469c4884154c7ef7440658e1e19a61bdd6e53ed7b6819e2a. 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/BEN582200850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335c0f88483723762066e9df37235cbc3284698d5ac70ae41791e5d3227a2189. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/BEN582200851.
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 0x28e8979415d414eaaeb3cef72a26711b7f76e84f6a7c4dec166eb97b14f3b466. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/BEN582200852.
Confronted - Anfisa Letyago Stranger Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99775c8ebfc1f73dbdc85ec94224d70eedca3b54e2ddb995ff0bb63d27a3f24d. 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/DESR41900316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedcbe16799e3160c36963dc3cc643ff4cd6c28aca41f673ef8a4cff27fe30042. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DET752200070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2efe8970db575d806dda09052cd1937ab9224e061554af38f01c8b13745be9a. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/BEN582101008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326fda0bc2ebe27dd63e598836bf6e06663b1e303a29a3b2b9b6eaeb83cde052. 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/BEN582101010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedcbe16799e3160c36963dc3cc643ff4cd6c28aca41f673ef8a4cff27fe30042. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DET752200070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19d6e1fa7b4a9fb0eb4728123eb4bb31d6278c5225484b8757e9fb6df0afd570. 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/USUG12307553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36496ef46b24a0a2c39c75dae723dc920866b11e7cee6566c32079535f91002c. 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/BEN582100910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef29e565e32232122dc209a24aebfc39569e7bd5e1201b8e6a9ec757fd77bd5. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BEN582100911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d8f7e10f5d10f30c0cc47d60453bf074b8c65f8fd0cd5fd3ddf18ec7b101899. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BEN582100912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb0931709f20edc48b089014f2b8ac6ba8c29d0255dc28cc8c76492e2639c7d. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/BEN582101009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ede4858864c532850497fe43ca2c4c0495ab98da53d5182a54ed9963790e86. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/BEN582101011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ddd0c0b0c799737e187995c447210fdfa5f91cbf6f934994012466df66e0680. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/GBCPZ2422876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b3f922d6f350a79236dd0e74534d70b9b20cabad416713b7e52f8af726cdd7f. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/BEN582100909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x149ccd90291aa8ce04e778419c0aa68407002ca44b405af3a497c8151474b0cd. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/DEBE71900595.