Nelson J. Chu (September 16, 1976 – August 14, 2016), known professionally as DJ Official, was an American Christian hip hop DJ, record producer and songwriter. He was a member of the Christian hip ho
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 0x07a65da14992e872c81dac0fda6eeef83fd3cb53f6814f9513d335fe2a4f716c. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6a73eabf-65cf-40a3-b99a-e920379afd43.json and https://artists.proofprofile.net/proofs/artist/6a73eabf-65cf-40a3-b99a-e920379afd43.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 0x6b87979adccbdb7f6468f556b3b559bc3beb3ce988b8a336f9a0b975605e35d2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USTCB0928988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd07ff15bd2b38aaefa78ff40c0e92ca0246ec853d293a7e64062b6102a645a85. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USTCB0929071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95385afca98888d388410c2fe5251d654af92f86416e5b8cdea8ee660cf20156. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USTCB0929138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x364feda131ef63ad7e19413c8436940cef204c899f2f0c9aa261ce4a6e6895bc. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USTCB0929208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x094fbf70cc49230d0dfecf20eaea4af78779c34df81ff91d0c18f99017f98fc2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USTCB0929600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe943ee4acf97e648f40a7577463ff5a99bbe2ad26e35fcdd1ddd5aa5be14ce31. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USTCB0929603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3210c11672d31bdcf0d3da64b06becdfd934a9cf7d2d333c06045a10a5e3928d. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/USTCB0929604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e795177292dfba5116dfaf9bad3290d2b78d32aee25ccc5ce291ac8f552b10d. 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/USTCB0929606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe643cbec82f048bb6ee96d492fc899bf09ef53a870db290c697f88271c8ec6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USTCB0929607.