R. City (short for Rock City; and formerly Planet VI and 2Ekwip) is an American hip-hop recording and production duo, formed in 2003 by the brothers Theron "Uptown AP" Thomas and Timothy "A.I." Thomas
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 0x7530353d5deb44d01541a5ab93d3be48cb736579919c5c48e0c060388de45687. 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/181bc604-978a-4397-9984-e7928fe7459c.json and https://artists.proofprofile.net/proofs/artist/181bc604-978a-4397-9984-e7928fe7459c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
I'm That... (Remix) (feat. Beenie Man & Azealia Banks)
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 0x553101f04c77139f37d8cd07fbf9d0e3f3eb5f98339960bceff8b91f27dae1b2. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USRC11500409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07fbb658314ff06fad1ad9c6ae50099e7fa054b893e9f0fbe94776d3880a5e03. 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/USRC11502180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c40bedb4f90500e1532996eca839c2d68884c2b97aa2425082aac9dfc28044. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/USRC11502179.
Locked Away Again (The Remix) (feat. Adam Levine & Lil Wayne)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc29a3ff293287f356547c37d00caf82662d426b513e16cbfdba77356280980ab. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:23:36Z), 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/USRC11502222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x236802167c8394cef42c80574217f4e86e54a0c7d3259b3f7727b3795bdeacb7. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/USRC11502227.
This Is Not A Drill...This Is Really Happening (Clean)
This Is Not A Drill...This Is Really Happening (Dirty)
This Is Not A Drill....This Is Really Happening
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52125a3a44039dfa5d6cf42b4383167c09e5af4a917800e613e6e99cbd8f63ad. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:32:08Z), 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/QZKUS2304114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a8800a6905a590dedd45a21de729a5a34451a0137c471fcd49f61c56a537287. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:06:16Z), 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/QZL382504261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf144832dba60e0cb4f9e85ae0480a23af9687e565b4d20ebfe0fefd6b942648b. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZKUS2301800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f89a89b89e2983c3ed7a98c30e85fd84233a64896ce560cd86f621a5319ad2. 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/DEUM71723040.
Bang Bang (feat. R. City, Selah Sue & Craig David) - René LaVice's Trigger Happy Remix
Bang Bang (Remixes) (feat. R. City, Selah Sue & Craig David)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d92b2f065a0b0a51a53a2cad21561b38dc218c32ba36fad6ca092dfd0ba4dd5. 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/GBCEN1700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce2fcbd87ccc855ad0d84a57aa8ea28bb1a63655c8026f9ab7e8a1c9f6dee83a. 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/USSM11601189.
Bang Bang (feat. R. City, Selah Sue & Craig David) - Danny Byrd Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34893942d0a9f00126ca5414eb896d2947ff2ce4764213c867f93d403c3b5d22. 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/GBCEN1603049.
Kill It 4 The Kids (feat. AWOLNATION & R.City) - Nom De Strip Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f60955620444f35ca0b73a995db1604978946985958644cdb9266b1ed4fb8e8. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USAT21601521.
Bang Bang (feat. R. City, Selah Sue & Craig David) - Jay Pryor & Digital Farm Animals Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe501d217cb0b7b1f0ace3cec2e15f52522bd4fcd97697d7e384ee538949c5294. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBCEN1603050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7551f1b8a1731857752c177fd51380398cd37b160c12584ea2a6df56158f2a18. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USAT21601532.
Bang Bang (feat. R. City, Selah Sue & Craig David) - Hush Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb98eb63b43c9f21bdd6c84e3e783472c87a7840e19eabd9012f9b17c299927b5. 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/GBCEN1700005.
Bang Bang (feat. R. City, Selah Sue & Craig David)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa869e6304cd399a02293544b86d2fbe663b9380c3ec7e0a120de50fec5cf7a6. 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/GBCEN1603051.
Asleep In The Bread Aisle (Expanded Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dc56648103afe1190aced94e41f41c776f46102e8adf3b58d92be12cdee302d. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USUM70961480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98aac1f2920fd101c0d0aeaa038217ca0878177bcae2f5d269c37bebb3b5d07. 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/USUM70757104.
DJ Khaled Presents Ace Hood Gutta [Exclusive Edition (Explicit)]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14913c29856e2c5055e946978a8fee0c8c7a86425b46b00fe516ba2e1abf142e. 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/USUM70835204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14913c29856e2c5055e946978a8fee0c8c7a86425b46b00fe516ba2e1abf142e. 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/USUM70835204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03149ec8016acf8b581bd643ff117ac4bbac026cd4bfdf1ce5fd0aabe9a9de2e. 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/USRC11701241.
Kill It 4 The Kids (feat. AWOLNATION & R.City)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa817abe290c184e7ba3f8cb802a91d410f340a43e8b8e416358910d3cfc51821. 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/USAT21502725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57812e2ef20026094f444ad8e24f5b1c458f2c12a7f1a9cc5a8c36d3ddf0b0cb. 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/USAT21501480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca8b337c5755f637f25332f8880d26bc3fe90fc0c0d44f586010264e62139a6. 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/QZH932000055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf548b2c7a810a34645996ff7f98ce4d30b0d51b900e419dac8b543aff9b5429a. 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/GBCEN1602907.
Jennie (feat. R. City, Bori) - Adam Trigger, Siks Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c3bf5721f1fb30c32a37a7572c5a7bd49565d24bee80ff24b21047024a0733. 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/DEUM71802199.