Mika Kares (born 1 November 1978) is a Finnish operatic bass in opera and concert who made an international career. He was first based at the Badisches Staatstheater Karlsruhe, and went on to the Savo
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 0x01f62737dfcec274d24f1af0a9a7529254a7e42f224b095b73feaa0cba141262. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3f1e83f9-3912-4f62-888c-f59475fe2b7b.json and https://artists.proofprofile.net/proofs/artist/3f1e83f9-3912-4f62-888c-f59475fe2b7b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Stabat Mater: I. Stabat Mater dolorosa (Introduction)
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 0xf5f0b69e3e6994e64464bb632e2d966a186d019c18dad81e0951217554ef06fc. 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/DEE861803008.
Stabat Mater: V. Eia, mater (Recitativo and Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44016caaafc11c726e4247af9e4d966ba4dd35c8971a0d5de18be50c221126ec. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/DEE861803012.
Stabat Mater: VI. Sancta Mater (Quartet)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fda85770e5f0fcdbf73efe37e3ec37b1ef851e0cc9029a67672d5cf3a379d16. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/DEE861803013.
Stabat Mater: VII. Fac ut portem (Cavatina)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905fd655938c4352d87eb066b9ff2e3789175d8ee853a022da4df6c2ea8a9081. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEE861803014.
Stabat Mater: VIII. Inflammatus (Aria and Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e437ecd0cbe89a638eed5ed73b74d8e064e0e992ff2ec1ca2f82f927a7f50fb. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/DEE861803015.
Stabat Mater: IX. Quando corpus morietur (Quartet)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ed87a96fa67dc43fadfdadf1431f237df1c4db9647f2521e8f51d7207c3762. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEE861803016.
Stabat Mater: X. In sempiterna saecula (Finale)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde23383609d105ce785b75dab1ceb00ef542df0b4ac7d9b3d323fe037bb20368. 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/DEE861803017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd86195c7105da1bc318f349c423033c121406c1612a10f4e2ecf1436b4761115. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/DEE861803011.
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