Jason W. Chung (born January 27, 1985), better known as Nosaj Thing, is an American artist, record producer, and DJ based in Los Angeles, California. He has produced tracks for Kendrick Lamar, Chance
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 0x8a8d403cb81d098a43906c2e30ca2a55dd5c8c46d4063c8a26fef683737fc657. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/698af7c2-0198-4937-abc5-68ef2807d7a7.json and https://artists.proofprofile.net/proofs/artist/698af7c2-0198-4937-abc5-68ef2807d7a7.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 0x5763e82c473922b39ba1aa562d2e11f3709ba253ce9c1f438ad9430887b1d52a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USTC10662957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b8d66a9b5c508f0498593d6712f1c73d8c17270d8fd93ff3e1dfd976126402a. 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/QMEZE1949602.
Acid Rap (10th Anniversary - Complete Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b8d66a9b5c508f0498593d6712f1c73d8c17270d8fd93ff3e1dfd976126402a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QMEZE1949602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68dade7bb2d39192e8dd9a9c2f418cd28935b0d0b7c74dfd0a5948b61c42d35a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GB5952300353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0c4028d3466e0008fd37914a4a346127efa92d9d44cf580483722f2f82126e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBMYF2200116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x960e32723f6390070957d513852bb8acb89209a0af5e094b322ae3691c4423ea. 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/GBCFB2000129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a676725eba703fd1071818e9587f678a5aa364888f6c1ae2cd00130029d1840. 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/USA2P2137573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4741e0843c6b0c3df95d168cb81e5035ccb2317099dbbc8f0f5a5bb61185453b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBCFB2300086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47fed6e1b19ed46f23f3fbd8de7bae085627e4ff8a5ec2ed792167a5514eab15. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/US3D32308301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x158f7a083a6ee4f969e32aee0df70cf7a29e3b710221c09559d9d39d02d49501. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/GBBPW0800205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e251ccf4e1e7a517cb9008eca59ce2a31cd8d576072b196227bb263d300b776. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GB5P52200442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ffe207afe4ce7f123587435b2989608c9401f4817ed1fbed72e7d11ede4de9b. 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/GB5P52200443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed10a8865daca91a76bf708095b8e44e1fbdfceaf2d25b7a158101943691b6e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GB5P52200444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17314722c82cad96fbb3023482212f268b7f67927439988bae78ca572a67b967. 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/GB5P52200445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05e84a8affa64b8abff6f28ec27831a26d3212cd70cbb465fd647e6077bc117. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GB5P52200446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83feaeb22f4f8354a11f78ab60c92407b9524c8c75d7cc57d005ea3d256a620c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GB5P52200447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd866b93b0be86e7289273d9ab1db7dcfda51d146f8c06eb9817ab5b51188752c. 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/GB5P52200448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975f7ad819e252a6fced048a02514161b5baf34c45290e30b47e0cf6d7f1daa9. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GB5P52200449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71b94fbe3201cfe31a1e636c721c8702384cb25c734ac19b69b0fbfcc0c064ae. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/USD8D1748008.
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