David Hilliard (born May 15, 1942) is a founding member of the Black Panther Party, having served as Chief of Staff. He would later go on to become a visiting instructor at the University of New Mexic
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 0xb0f8af47eaa1d990a637954de3cc258836d03b440084ca6f5161653d6ec94e82. 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/b2092720-23aa-46b5-abb7-fb27b42b48b4.json and https://artists.proofprofile.net/proofs/artist/b2092720-23aa-46b5-abb7-fb27b42b48b4.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 0x0ae8309ae2852cad54cfe7f81d18437aaff8be52a251f77ab1fbf1f500eb44a2. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/USHM91896304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b4cedbaa1ae7037ccd702eb4ca8daa509e834209ec90dd8e6618dced4c07f4f. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/USHM91896307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ee5446e3071c0ebe3d577a1763469fa01dac753c394d46e96ec8096832d023. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/USHM91896310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f1b9c2554cd065d144ad5a75ae7c75f7978bb0609bd91da8e55afaf463d29e. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/USHM91896315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa07542a85646892dd7732e7a200b713673ea6a0a953601453c2eac484d85c15d. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/USHM22056669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x937dbd7ea9a70356e81452b62a48bb7617eb3832440bc189fc4bd03771bb9c8b. 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/USHM22056670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38fe163156485d6241d40f9508e9e07c3e285de731c7d956d006534c3c259786. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USHM22056674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cba5e86ad3b44fdd7ce92bfea18252ea80e51f451fde6a519c99eece462227e. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:47:05Z), 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/USHM22056677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a469b75c8af4297a32b78b183d34bc3ea63146c656a414fa1d6ec3ce0330a9a. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:33:23Z), 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/USDY42212516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2bce664a82fad0b8b59179d06ad5434dc3cd82827566751d3de07c91c9bc3b. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/USDY42212522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56784b0dbc75cdf29936e4a8ff39b5d37f9a1bd7b8fd3a708edfb0592f5cc4c. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:10:04Z), 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/USDY42212525.