Otis Lee Clay (February 11, 1942 – January 8, 2016) was an American R&B and soul singer, who started in gospel music. In 2013, Clay was inducted to the Blues Hall of Fame. Early life Clay was born in
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 0x0723c5d95e41647c7c4332480dad648c1b41262b906fb630877da722ffa3e447. 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/ea23f4b0-8cad-4064-90ab-69217b001fce.json and https://artists.proofprofile.net/proofs/artist/ea23f4b0-8cad-4064-90ab-69217b001fce.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tired of Falling In (And Out Of) Love B/W I Paid The Price
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 0x2b0d7e3baa7ba0486c48e1d3b627c9d6ab3042f8bfafc2e7cb03074d8130e026. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/USBU19252001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc7d17e23d240207e5c6bd3a5cd565fff0134411dbb2cb3af22022fa734f3ba. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/USBP10300506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde35150c6a462db3743948b977a8394e825f023017fdd8cf1332870d1b3b7c6e. 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/USFP71227702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29aace9330d262f05912371c79270abba135772245266f5cf0672f0b6aa6709c. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:08:47Z), 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/US2HK1333101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef1a54791f462448ecdedcea8a69aeb299e4258aea7d7418d185a3be7e9cee43. 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/US2HK1333102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a335d90dea6b9e653ee8ff555c2b3bfc8032c26a26a9ef1d054d395912e9ae. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/US2HK1333103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b13a90f057d58cd1464550e6e785f54c02b2840e6c6b3ddf5a4615bce736bec. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/US2HK1333104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ad4dae90254d8308ee7c76cbb56398d6b153eb0a9aa5dd470b8d99188f90de. 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/US2HK1333105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ee9e3617885623eaf6b8bf6eb29743deaac1129eae03e372d5293bf5d261efe. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/US2HK1333107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7deeaa7e8b0dd5c8c8cefcc7d4f9d33f0f64f81cba4cac1f61e648e662f17d9. 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/US2HK1333108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec935778301a728c9ab5c26c368d41e9c9e283cce429da522567412c04594a13. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/US2HK1333110.
One-derful! The Chicago Masters 1965-1968
Other Side Of The Tracks (Live Chicago '92)
Three Is A Crowd B/W Flame In Your Heart
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2498778bc4d3bfdbc83588aba014b5f71462a10592875226f646d22238f8679. 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/USACX2500115.
Mavis Staples I'll Take You There: An All-Star Concert Celebration (Deluxe / Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ba325ebff7b00355129261a9bdaf5b6452ef2697ef655cd636933617832dfd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZ7KM1700020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a54941ae87991478f373c4830767231940a7774ca3b470bdef8fce213a9e902. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USBP10300509.
Blind Pig Records: 40th Anniversary Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a54941ae87991478f373c4830767231940a7774ca3b470bdef8fce213a9e902. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USBP10300509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x131425ae2e80c861a9ff17be4e5fcd9aea63b83df820d3a0e39f1709cf2d5274. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/USCMG0301837.
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