Concrete Boys is an American hip hop record label and collective founded by rapper Lil Yachty in 2020. The group consists of Lil Yachty, Draft Day, Camo!, Dc2Trill, Rio Amor, and Honest. History 2
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 0x20702ef8234c8a238f1cbfc6078f9c1f2ce5ff6734d6f37d3d95fe70a062cd9c. 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/2aae98cc-86f9-47e3-a6c5-070266e8d34f.json and https://artists.proofprofile.net/proofs/artist/2aae98cc-86f9-47e3-a6c5-070266e8d34f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
POINT ME TO IT (feat. Lil Yachty, Camo!)
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 0x32285964e9bc67e4861e29d951f996cd537ac6a8ca6a55da1892adb507188b96. 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/QZRD92405063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f433da08ce4131b2ba8424ce82fdb607c919569ed5a8a318dc270d7919306f. 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/QZRD92405064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0678f689d941668a268c2e0f014d60b372fde850c493a94a95ff20b69695e67. 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/QZRD92405065.
PLAYA WALKIN (feat. Lil Yachty, Dc2trill)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a0af95e035a784da6cddd75bee2385032ed72e8d5804cb02565fbfec31fef2e. 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/QZRD92405066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e04d70cd4a8d141fd2ecd232c256361aad34d7c75bfe378829fcee8df486a20. 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/QZRD92405067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77acb825be1a9467fb3c6363a8024c20531363c4aa226232df3af5cd472ddb52. 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/QZRD92405068.
2 HANDS 2 EYES 10 WHIPS/RENT DUE (feat. Lil Yachty, Camo!, Draft Day, KARRAHBOOO, Dc2trill)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa30f987b07205bf370a588750d97ae71e4b86154d99ca96c85c1b5d3a51d38ff. 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/QZRD92405069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc58807a69aa9293fe6f6593b3f261aecef0fbf30af522261b1dcadb73496a4e6. 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/QZRD92405070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf52f51e18db20a2e4649cc2f887d2b60816edadfd1e0a41857686a5e27b2717. 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/QZRD92405072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb93641a9ee75b92d82a631ca5f99df862206f1e51d550c5cdc2471ced78820e6. 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/QZRD92405071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fcc078fb7e078762b7ebf07d2b27f03b394ee582cf9e715193ddd04148ad135. 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/QZRD92405073.
JEFF & LITA (feat. Lil Yachty, KARRAHBOOO)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ceefd8284a4efbdbf9602619466c9612753ab658963c38c58079db9d3c78a31. 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/QZRD92405074.
DIE FOR MINE (feat. Lil Yachty, Camo!, KARRAHBOOO, Dc2trill, Draft Day)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34237085572059a9b0474f218a2c9f277d874951613e82fee523cb5a7c379a5. 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/QZRD92405075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dae8957608700bba4be76c14beaf93e6b4b0716449a0fd25aa39acc4c8a2ae5. 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/QZRD92405076.
ON THE RADAR CONCRETE CYPHER (feat. Lil Yachty, Camo!, KARRAHBOOO, Dc2trill, Draft Day)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8153b79b8dcedac1d983995d7b78a26e8938c1a6ec5466c4347292720248fa7d. 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/QZRD92405079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x252cf29110f4cc29f3b6a595f1152b32071bfe518951b2ef6fed6f1f2bbc1775. 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/QZRD92405078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32285964e9bc67e4861e29d951f996cd537ac6a8ca6a55da1892adb507188b96. 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/QZRD92405063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f433da08ce4131b2ba8424ce82fdb607c919569ed5a8a318dc270d7919306f. 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/QZRD92405064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0678f689d941668a268c2e0f014d60b372fde850c493a94a95ff20b69695e67. 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/QZRD92405065.