Barbara Lynn (born Barbara Lynn Ozen, later Barbara Lynn Cumby, January 16, 1942) is an American rhythm and blues and electric blues guitarist, singer and songwriter. She is best known for her R&B cha
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 0x94fb22e74888c6fa5d99f4edf7b04a9fbc076a0eefb588942264288eb687ac5e. 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/4163c8da-9ba0-4b48-9803-9a79906c70ac.json and https://artists.proofprofile.net/proofs/artist/4163c8da-9ba0-4b48-9803-9a79906c70ac.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 0x34353bb0f6d9d6efaf3e9b0c7bbc9c96a99a2bd199ac87699faa6cdd7f4d33b6. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEXO32270354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986757554a8e52a5d36867894d4ef2dda4587800c2234e0d92f499fe5f0a329a. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/USJRC0302303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8148a30b09f342c5a8db2bf29a7a2bc3e0d2da633c44930e5121bbe28bd77de5. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/USJRC0302306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf48d1d7a26fd210ebb3087efea46da2d82c049c30a5678e69c20268b7845e852. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USJRC0302309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb04daa274f7c416acbe7baeea9ae5d1bcc66c4e71dc63d6cbda9ebce0c8d4c91. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/USJRC0302311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb6c5d5ac15c76b66f51144a3a8fc6f04534a0c848d9b3a9329a12ce01544b1. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/USJRC0302312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6932c4ef84db327ae870f490fa299766d37e3cd4c0ff2c7add31d8b5c5b425b9. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/USAT20201824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1efb29d923fd6c95d8a1048740a0b2fef3124ff0bf6dd2281bb424356da21e57. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USAT20201825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8349cc6e963943a0bd19e125860c852bd9ec6a463b9135fb3487f785666d1982. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USDNB0650408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171f1dece080bfe4c6188fd59eac441acbd096073322df884b30f800081daf3e. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/USDNB0650409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5330d75639ff21cb2f98265fd61fc155631b11d001a83d3eefb8099f97fe36b5. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:58:08Z), 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/USJRC0390618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x723bc12467828444f179367423c00155da24d167c7c50d27f5b915473caa38cb. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USJRC0390621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d42a9a0ec1a62d7681cc94e5d7ff4f4aca9a71db7e85ad1236839c19c72e7cb. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USJRC0390627.
You'll Lose A Good Thing / You're Gonna Need Me
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72231f8941d2f80dc7121b6a208e54cbf9b2ebee0beaece39a3d827bcdfe6a5. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USDEI7704307.
You'll Lose A Good Thing You're Gonna Need Me
You'll Lose a Good Thing / You're Gonna Need Me
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ab28e4def946e91a83adafac80cc85d5c83d588dde1d1e38b1f12a7b6d0af8. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/USXTN1036442.
ユー・ルーズ・ア・グッド・シング
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa521dd40f566ef3219864148f5eaf68f07aa4476f2cd3de696ffbc7ce0747e67. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USAT21800655.
Movin' on a Groove (The Crazy Cajun Recordings)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x776b7046f58ce9112a55ecc18ee40d080d4142650e3540077b4f158907cf63df. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/GBBLG7600501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4edf77f7e4abcd7cc6cd8499e10dd696cddd81f2513c888afc65f77c94b3b5b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GGBPJ0800113.
Essential Classics, Vol. 386: Barbara Lynn
Bob Corritore & Friends: Women In Blues Showcase
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58cffdb3fcc63e014ad9f540f74bac20b8212096a21230846b3ac894415bfc63. 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/QZCLE2300118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9abc0b46e8d2106c84f543670e3a929de0d84def4cc76d1a6359d2592e3fb835. 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/GBCTF1000368.