thumb|right|Cotton in Delray Beach, Florida James Henry Cotton (July 1, 1935 – March 16, 2017) was an American blues harmonica player, singer/songwriter, who performed and recorded with many fellow bl
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 0x03b4902150bf4a810fdb23d0255cd8482ae07c07ff5d98cfe155045faea5ade4. 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/d169d823-5a30-4e50-9060-ab2680e37640.json and https://artists.proofprofile.net/proofs/artist/d169d823-5a30-4e50-9060-ab2680e37640.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Cotton Crop Blues / Hold Me in Your Arms
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 0x281d29253053a33f45bdcaf3a56c8f2eff9d2c2c8aad0af9b1c44675351e2c1b. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/USSE60272530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc6cbe44d6ee0170d1fbafab77b6d38b01f656f6cf676b0c405a7347aa6c010. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:09:29Z), 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/USSM10900831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde770dcca7ec64f35f0c33b30548684919f29987e3dcc976bad5f7b7ddf2fb8b. 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/USSM10900849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfafd51b00dfcdc5d7f698c175486c849fa5836e3385b8c13c772865aa7ae1bb8. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T21:17:24Z), 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/USSM10900851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ad6fdfc6b78bb7eff6853b023db09fc5065ccc23af2f97a89373428aa8fc33. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/USSM10900852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d50d4b4b23020c8a949e1fccac545bed3e204954ce34983d533f23132a49df4. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/USSM10900872.
Late Night Blues (Live at the New Penelope Café - 1967)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c187f9c8f4f709057941960e81fc528bfc158fb4e217ce671b376895649f23. 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/USARL8473703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb313c066ee25b2b533667af8444306a8971c3cbc9c72b59f0e00b46501173c4f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USARL8473705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x230a2697f830871ca801ec40755e71114af8adc08bc8c97bd858516ad8b93fd9. 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/USARL8473706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a0cda2ee01312f4992a69f9ac3679b8dadda7bb925cf54ed1af70658b5b690. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:28:38Z), 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/USARL8473707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e752c50fe3c88ee76ba63073a4e34a0a9408750b00c7e679eb86579d5a421f. 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/USARL8473708.
Live From Chicago - Mr. Superharp Himself!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x334af33bd986f5114cac29b82237a053732f97a08b87b73a97e27edf45e1bb8f. 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/USARL8674608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb99ae22c70629b458e01534d97b46dea6e8b07d2d8fdf546eb550292ecaa47dd. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USARL9079002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404fc033ed64f9f10ba322f891d1ff0b05a33af4908d729888bfc2ff376e7c81. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USARL9079003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91f2eae136a0df08e72e047f90a85b2a1abc6fef30e46499ebe59edfee09d66. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USARL9079004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef1d96ffb1fc3cd6d25f8016f135f3fb077b0f1fe15931690abb57e72f4bc04. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:09:24Z), 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/USARL9079006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c37290f9b781046efaee56b8da450df24da4f97c47cd79cb65174ef4fca843. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/USARL9079008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4af39094dc081709028c72cb03bccdbd2a8f9abb130f0f1cadef965655c8744. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USARL9079010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e6e531755a28572b49c4125b4b3eb70ff59deebfff3286e39ee694a84a32ea. 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/FRZ029502340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75e365376d68003a7cbd5cd732a96c09f2aa8bc1080a21147016b5655bc0cf3. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:48:11Z), 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/FRZ029502360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012ff2a2e8b1152dfa62482b907de7844fd0d091953ac2e2e6a2471a6044896e. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:22:19Z), 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/FRZ029502370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb85f476a37f86dd0842afb15e7c2cce559d92684457f7e8d85922cd043641d5. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRZ029502460.
Late Night Blues (Live at The New Penelope Café - 1967)
Midnight Creeper (The Complete 1967 Live Montreal James Cotton Sessions)
South Side Boogie & Other Favorites (Digitally Remastered)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85c94630f09d781c59116c53aebc384bd35dd2b2274ca164fb587ef718fd2407. 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/USGZ20607402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02fc599bba9d6db033f6b746d3d34964d38aff0b5fe49ee82a40ba90da4da3ff. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:26:29Z), 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/USARL1094012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2015ba8b9cc37363fb9efa3061433bcd7786edccc7171df7a9e329f56312e3e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USA371187406.
Blues Cotton - [The Dave Cash Collection]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3997ae2fe51d4efc871cc635ac9b03bdb28872f6f2d922da4958f8eec1da536d. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/USARL1395404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86355d4dec7fc223d171cebd9bf6412a375a0a792d1dfabf64ee9357011b24bf. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/USARL1395405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b8d6b19603d42b6a43a5923778981adc9ab3a353c13a3e0957ae31c14ac4c97. 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/USARL1395407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d5e6e929b1f96d01f8a2a7288c2d201e9d6adbe03d53b51e4974c6a4e9892b2. 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/USARL1395408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ff9729aecce8edc52db0004705e89e24952bfd81c349cbcd22c727ad7e8cb7. 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/USARL1395409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e3284614df67dbac544db72054fcd8cc9366e925e7cd630fb0982e7b0e6bf08. 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/USARL1395411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x281d29253053a33f45bdcaf3a56c8f2eff9d2c2c8aad0af9b1c44675351e2c1b. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/USSE60272530.
The Best Of James Cotton - The Alligator Records Years
Harvard Square Blues (Live Cambridge '74)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a83307a83ca2aa912e713f6b7282d0c2d24225ba93ddd8ef16d1c9327f80d8. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZPL52503924.
Essential Classics, Vol. 656: James Cotton
The Devil's Jukebox Vol. 1 (36 Black and Evil Blues Songs)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d5e6cb35e87f8f759e666f8b8a55ee51b4803870834298866895df630eda20. 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/DEXN92346601.