Ché Wolton Grant (born 4 March 1994), known professionally as AJ Tracey, is a British rapper and record producer from Ladbroke Grove, London. Tracey rose to popularity in 2016 and was listed by The Gu
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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b666ed555ff4c3c4173ec95d17a8317d9d4c26931f969a08ad19bf3a045938. 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/b19e62fc-7b3c-4cf7-80fb-8c15aabee948.json and https://artists.proofprofile.net/proofs/artist/b19e62fc-7b3c-4cf7-80fb-8c15aabee948.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de7e70df6631ac6c3c86799f8dafbbe9400fb1d562d98a8365ceba55687fdaa. 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/UKQNW2100064.
Ladbroke Grove (Remix) [feat. General Levy & Novelist]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe86193db918dd43635feca38d6fa606f7eaa682d2c86567ce2df555c7d13d03e. 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/GB2DY2100832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb3ff193ca28b72dc7c5e38e73eb0af7bd0db886c77a7b052cc1275017bc51be. 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/GB2DY1900484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2430b0ceec36c73350ae614ccc407456272bc777f8ba8ef4f10c3d6f7dedb65d. 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/QMRSZ2000955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d6da873fc3cbdd74bb30b1b2feb876bc8902f61209ae69695ecb404b44179f2. 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/USUM71911874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1938293faf1e2dd4f5529243d59f1559f519828b321c7294ea1aaf1604490201. 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/UKQNV2000030.
London's Calling (feat. Skrapz, Avelino, Asco, Loski & AJ Tracey)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c61ecdce3bf1c6d2739b68880b92bc5ec34ae92dd64ba222a5810be017fc26. 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/GBAYE1800438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d6da873fc3cbdd74bb30b1b2feb876bc8902f61209ae69695ecb404b44179f2. 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/USUM71911874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce813f5e9ed66c825453fb7166b68b79d4d221cb975239fc86c82bc29f72f9a9. 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/GBBKS1600170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaede16263282bfc746686fe43bf4c04f8a76e4c5316dbfb0ee6e047beafd69a. 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/USA2B1803304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f32c7c0500c622ae9a08ce98ac4a1e521d2bf6c2a0a1c60039de231d19e5fb6. 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/GBLFP1755144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b8fa0bcaecd159635e12cb6f1be6589b132d571280053d3d94b89ac4f2bbb1. 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/US5ED2101212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e4bd15abedc98d27eeb596fee0e59ce1fe0bc42a6b80c83162cbef4079b8a24. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBLFP1805263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c92b15a0556f06ad5d43bb9678c2a35cb3ceeb2355d259aa3fd3fd120f40e48. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/GX3Q92091289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df7262f6b4080e3197cc07ff784cd2274f1ae236c77639492938d43008d734c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US38Y2312132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x612b6ed31e50b6515d39c2816c42c382f5859611548011552ea641038bd914af. 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/GBLFP1598248.
Ain't It Different (feat. AJ Tracey & Stormzy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeab8db6a056545bc12176f7e366df572ff3eec5e9f79fdadbbbe19055cfcaca. 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/GBARL2001008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeab8db6a056545bc12176f7e366df572ff3eec5e9f79fdadbbbe19055cfcaca. 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/GBARL2001008.