Brown & Gray is a British/American country-pop duo based in London and Los Angeles. The duo is composed of singer/songwriters Kaci Brown and Sam Gray. History alt=Brown & Gray|left|thumb|Brown & Gr
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 0x4f3559313613963770e7f97afd813b11d6a7b84bd018da17c18267fc9aa929b0. 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/b5e60e98-57ea-4fdb-a2f7-9f491a939ed9.json and https://artists.proofprofile.net/proofs/artist/b5e60e98-57ea-4fdb-a2f7-9f491a939ed9.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 0x273bdc39271e5269e7cca414107f3c51128e11052e224b31cdef7f6842717a91. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/GBKPL1793989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e18b33f051a9d9be1d109d276525696c1b1bd5bdbe2c2c31454fe49a55e557a. 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/GBKPL1899392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8afafd93ceaa809b981b70788f694bd11973a7fde36fb7b65401917a82079121. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GBKPL1809654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5af2c00fb9733a842cc430e8dd67278669e904b6d8e384ed226aa61c0034ea17. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/GBKPL1809655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7671457b9356e1435353dc3b5ff55454d5616e8072d84e4dba26c0a2839f15c. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:07:20Z), 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/GBKPL1946903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d684b4bb1255da21610641e3fdb05a387e6092af8d82790d77f6c8df2847724. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/GBKPL2022042.
Highway Finds Fest (Live at Chelsea’s Lounge, Nashville, TN July 18th, 2020)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ee98aef0ed8ae851e7ae4c09d023b417177dd91b727a74622751e68a98ef57. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QM6P42325956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd51558564e5a7049640296958c145263f7736578c15f13e9763e565f07e4b2f. 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/QMFME2322363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d4657e58fe7661d09a7c8f6393b88992e4cc37436408c029d36fece6ff0ddf. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLK072300474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb1f9c82ba7808dc34bba25935c4973ffa886f60a558bb5e501fcc02b06d769. 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/QMFME2087479.