Nnenna Freelon (born July 28, 1954) is an American jazz singer, composer, producer, and arranger. Early life and education Freelon was born Chinyere Nnenna Pierce to Charles and Frances Pierce in Ca
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 0x3ad0160765c684feb01ee5ab01a2e935eca4cdde72dab9da20de922cc7102bdf. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/425be40c-02d2-4139-a60b-5d531fe794a9.json and https://artists.proofprofile.net/proofs/artist/425be40c-02d2-4139-a60b-5d531fe794a9.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 0x3def2d776803215d2c756f1507a894b438d11b227dffc6f4e71c21610c9343af. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/USC4R0304011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eebd2de8d5d8eca3759b69a53bed2393c807dada4481543747dd3843472b72c. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USC4R0304013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a91c9c8eed946cae6cda8101d7820e48ff69be2dd0847001911d55e4e91845. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USC4R0304020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23422eaf60fdcf5a5a1115b02daa702faec02ec41f30a6d9c299367e4519deda. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/USC4R0302199.
Blueprint Of A Lady: Sketches Of Billie Holiday
Better Than Anything: The Quintessential Nnenna Freelon
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323825a9a51bf430418554196d000d76745d622217cdfb7e583afad6705fc6c7. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USC4R0921081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe5429f957d646d10b8f90f4395aef86c49f4ad0b4960d14fae5ddf0bb7edda. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:14:02Z), 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/USC4R0921083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf613e58d0906eb9fc3f85cf9f36a9dea44f155d7847266fdfafe77ac9c836337. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/US3M82507054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2aa767625964701e6d1c2f672934a1a4191381cde8cb30a74ef6385b46d80d6. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/US3M82507051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc060948d68325effe85a1741cb9df6932fa8d476f8ab902999f6232ad3630a9b. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/US3M82507053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf613e58d0906eb9fc3f85cf9f36a9dea44f155d7847266fdfafe77ac9c836337. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/US3M82507054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e322edd281308ac749fb8238be69435322ea96a80530c41d24d92b3c7a65168. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/US3M82507059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44522c6ee48821f43398559de69f8ace523cf7dec1b5fc1f02845d7cf1fb7cbf. 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/USC4R0921082.