The Cash Box Kings is an American blues band from Chicago, Illinois, United States, specializing in Chicago-style blues from the 1940s and 1950s, as well as Delta blues style music from the 1920s an
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 0x4963db23f4986160aac0d50e7e2dceb0fd57dbca8199037657d04f55f0385fd0. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/37aff092-0d3e-4e72-8c97-7a86c214b985.json and https://artists.proofprofile.net/proofs/artist/37aff092-0d3e-4e72-8c97-7a86c214b985.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 0x3022909c1c844a6e6a9523dff4b80dac093d45cef876124cfb4991f24af2c887. 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/USARL1797601.
If You Got A Jealous Woman Facebook Ain't Your Friend
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x664ab6066a91bc74a20a20d79c155ea5e9984bd1a445a0c12c7c99e077cbae77. 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/USARL1797607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e7b3058723ab9712e5c8332ba44bfacb63bdf5fcceb42eb92834393a9a3ebd. 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/USARL1999104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4060db0023d352e1e67258174d648861cd5212c3f0ad64ed8f33ad6b05df94e3. 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/USARL1999105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d970fbe10f3f2325caa24fa066952d4ba94e560104b254a57b39332aecddf2. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USARL1999106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ee28815d12517dfcaad52a9b75e01905e3530631352eac1298f04fc02acb682. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/USARL1999113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a50f0cf7e673b2ff7c6bf04fc98ac7f0f01b308c5a5693460913144e2225800. 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/USARL2301101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd76fee01395dabad3ec9e05bba2e56ab4c07c49a4d608691ff027e6f46f1eb4. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/USARL2301107.