Ellis CeDell Davis (June 9, 1926 – September 27, 2017) was an American blues guitarist and singer. He was most notable for his distinctive style of guitar playing. Davis played guitar using a butter
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 0x32a52ce83d756d9b30e0b0662b6e43db3d7c8ad0b8c8811b200767360de2589d. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/713a6718-cd5d-4e35-8ab0-413be2390fe5.json and https://artists.proofprofile.net/proofs/artist/713a6718-cd5d-4e35-8ab0-413be2390fe5.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 0x42b1ebc308871d1e139f9fe356f6b4a37f7bcdea98e4dcee977d6955bafbdef2. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:39:29Z), 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/USFP70400749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a1b522de56ff3f595d723ade058b8264ab7788d2ed43818e79e3ceb81d1be72. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:32:55Z), 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/USFP70400762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6be16271843f94affc465b414c07ab435571c996f79bd817df1073eb1d66979. 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/QM6MZ1480137.
Highway 61 - CeDell Davis / Herman Alexander
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c9a266dfa81bd2f90cc640d73a264204278c6e32aac5a7d2c3c2d51f7f97c33. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QMFMG1574974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d5d5acd2f97206302821c75e7bb2825969d16685821467e26061d42cb7755f. 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/QMFMG1574981.