Michael McCown is an American operatic tenor, based at the Oper Frankfurt. While many of the ninety roles in his repertoire are comprimario, he has portrayed lead roles such as Britten's Captain Vere,
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 0x409522c103ce0faf1a98187451840d9d1169eb4e849a135106b3c673ef7b9e22. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/59aa9bf0-b96e-49e2-aea0-30f57f77bebf.json and https://artists.proofprofile.net/proofs/artist/59aa9bf0-b96e-49e2-aea0-30f57f77bebf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Das schlaue Füchslein, JW I/9, Act II: Ano, ve Stráni bude daleko lépe (Live)
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 0xa2dcd6fe276123a6804e9b7d71f1d6592b4186432ef3a781f4bbc67af581ed14. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/DEU921998210.
Tannhäuser, WWV 70, Act I: Wer ist der dort in brünstigem Gebete? (Landgraf, Walther, Biterolf, Wolfram, Heinrich, Reinmar, Tannhäuser)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b3f80edb2a83fd6111e67cebe4b1261249e5d63f4885d67962011436d7bce9c. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/NLE421200109.
Tannhäuser, WWV 70, Act II: Versammelt sind aus meinen Landen (Landgraf, Walther, Heinrich, Wolfram, Biterolf, Reinmar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa0ece7ee33315797b0715857dea78029afaa5d8a017577424cba954d8159e5. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/NLE421200125.
Tannhäuser, WWV 70, Act III: Heil! Heil! Der Gnade Wunder Heil! (Walther, Heinrich, Wolfram, Biterolf, Reinmar, Landgraf)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb99793d7e537b442191dedf0f366c0506d31227f2787b383d69c0bf012a497. 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/NLE421200137.