Maurizio Sera (born September 30, 1981), known professionally as Irko (stylized in all caps) is an Italian audio engineer currently based in Los Angeles, California. Career Irko was born and raised i
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 0xf8dae8af612f2fc5c0d755c8297244e3a19cf39b17188d12811e3bb26c394884. 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/3a64b85a-efb4-4b45-99aa-d669640f78d2.json and https://artists.proofprofile.net/proofs/artist/3a64b85a-efb4-4b45-99aa-d669640f78d2.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 0x9ebdd2fe5c2fb5d72fcece41203ebcac98898eb057e01b502528e84cf3ce0a66. 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/FR9W12215739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fc8b3f1c0b35f1f192781c4df19b4b67169287d28737aafdd6451479dfc9ed7. 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/FRR642201648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eec7e5c3edd25221f8894a9b865e13501c1f9086aadbdef40e0f482b756e8a6. 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/FR9W12337763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b3881798d661b8c48276c0c67755662aacb3696dd648576310f182eaaae1195. 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/FR9W12337764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a7823c5f6da638131b23de7e8eafbc731712388eeedff38ed20f7c860290da. 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/FR9W12337765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde59a54105c302ea173612d52f2c67d08ac085d4c62cba70cf55e7fa11ec02b5. 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/FR9W12337766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b235c97101cb52ea35139211669f68829fd541293e44677b139be37a80aec9c. 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/FR9W12337767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a9e1dfe062f2aad036d9dbcffc0663df332285fca45f362d15dcbf93ea0300. 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/FR9W12337768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58c89733efd064fb14fcd71f7380dae9576045a553e388428c0a866368ffe273. 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/FR9W12337769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e7b20e5c2a6690bad9175b831337ebc630aec087f5f7c5680d4f362b6c21df. 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/FR9W12337770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f377b405c514d25fe3e07bdcaf30c1f20d2d4efcb8b788b7db654eec9da1d1. 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/FR9W12336990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07886d48b3497959cf5f2ad90400731e0a0c6299c5b4107a66292db41db03ef1. 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/FR9W12337771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d9165422d76eb10f0c79ef90951296f8d844433de15ba0fc23f9ae13259144. 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/QZMEN2163230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe5175b0fac591596f45006461129dd10048f756f8cbacbc6c0714161b951b86. 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/QZMEN2163231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b53a275f1ea3bb3b7f056d41b8fce5a5a6dc97dd359c6a058f5ddd54cd8adb. 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/QZMEN2163232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04bcb52a659cdeb1a0f0f4c6fd3e93740c04a0c5fed9ef93211a52164aaa1fd0. 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/QZMEN2163233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165d20349d227310a6280c1e893b92977daf9888ab8b682059cc3c44669afb33. 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/QZMEN2163234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x038d1d016f9d841a578a3fb719f0c278fc3c27bf1a8de0f13f5c408d394bdcd2. 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/QZMEN2163235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x514aaa06ca537932d584347bb968f0aed8c9693d544443e0c4b119df16e9108e. 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/QZMEN2163236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a8ec1c5099246b67b82528faf459172224f6d031ce7634230d34a6ef8d0575b. 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/QZMEN2163237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd3c96c89e87fdf4cdea0190211851a91bccc673c6cab3ec306882e5b7260d46. 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/QZMEN2163238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a680824b597c7fc408eff3b8ce3b3cc8731bfb32b9b17a7822c3249c1ba9662. 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/QZMEN2163239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f377b405c514d25fe3e07bdcaf30c1f20d2d4efcb8b788b7db654eec9da1d1. 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/FR9W12336990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef6b95af6b3d87e92d1452045e415c658972558bbc5a82763535a2ef3208277. 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/QZTB32298501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9662d243d8599c1403d31acca1e1228b2ff62d944d11488f664eafc49bdf0751. 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/QZK6P2243401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed58131c6da468273eb3037badd0adb445f71cc58088ebe41506469d44d0df96. 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/QZK6P2243402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x507dd4513a7d208803a444091ed8ae1f1acc8de10c101bc9df3f4b0be27f37cb. 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/QZK6P2243403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a234e4a885167f3bc79d12af6464a0b71e09ea9915fefea622aa5ad300fabb1. 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/QZK6P2243404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1900b686d7bf3cfe4c4ff1f07faace518d28aacae7e7827029b4cd0e50899453. 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/QZHN72296518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x689fbe36d977b566f5fcae90c6c87e85beaacafcf154019d68ba42bf119b08a2. 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/FR0NT0000025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c1c2650121e4bcc8289f2e5f5daaa4dc280d519c806310582fd574e3bf799f. 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/QZNWX2046546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d82cc9d8607886ea906b5082df9cccd0bd15e60158a9ab5ed2572a6672905f. 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/NL1AP2020066.