Leona Pearl Mitchell (born October 13, 1949, Enid, Oklahoma) is an American operatic soprano who sang for 18 seasons as a leading spinto soprano at the Metropolitan Opera in New York. In her home sta
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 0x921ab0719974084fb35c3e421fe7f5525eb111e31d659935439d4ef805425765. Chain 2 (Bitcoin): anchored in block 954580 (2026-06-20T17:48:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b77886b2-28b9-4e6b-9f16-2ba42ff1064e.json and https://artists.proofprofile.net/proofs/artist/b77886b2-28b9-4e6b-9f16-2ba42ff1064e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Porgy and Bess / Act 1: "They Pass By Singin'...Here Comes Big Boy!...Don't You Ever Let a Woman Grieve You"
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 0x2277a766308cdb399919937523a83279d13281c5e00efc52329bf571dea6ba05. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/GBF077540205.
Porgy and Bess / Act 1: "O, Little Stars...Touch That Money an' Meet Yo' Gawd!"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ba8ff4b30b0776550af0a8d730da34a2d4a409e12a0cebb686c4ccf61422d7. 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/GBF077540206.
Porgy and Bess / Act 1: "Wake Up An' Hit It Out!...That You, Sportin'Life?"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d57c0e94ac8d2f88b9248f6158e23a69e80ad4ad739ebd3b346c8ab5e3eef3. 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/GBF077540207.
Porgy and Bess / Act 1: "Headin' For the Promis' Lan'"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d227a662f64495ae8f03c0e3b75f919c928ef21099c2facbb190a3eebbcb463. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/GBF077540212.
Porgy and Bess / Act 2: "Bess, You Is My Woman Now"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b39bec7153f9d395072441f776c8d845fb0fa3d68a79d08f1d5f2cd5d6536f7. 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/GBF077540217.
Porgy and Bess / Act 2: "I Loves You, Porgy"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487e9ec7c8af48a337c2f16667028083eedaf5df74d3feeb72c9a82fbb892e46. 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/GBF077540226.