Malibu Ken (also known as Aesop Rock & TOBACCO are Malibu Ken) is an American hip-hop duo composed of rapper Aesop Rock and multi-instrumentalist Tobacco. The duo released their eponymous debut album
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 0x165d10c055da47ad7ccb6c4b4961804eab7a18ebf0215c585de6532c9c45b24a. 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/14590170-4846-480b-83f0-04a5b15c2593.json and https://artists.proofprofile.net/proofs/artist/14590170-4846-480b-83f0-04a5b15c2593.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 0xda92c17a44bf861d79609e5a0cf90c92d875964bc9e83856803e5489b6c80a90. 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/USBWK1700159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b8ef8d4d0543e6f697ccafbfc43c751f1497d63b81d97310d27beffcf4f6018. 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/USBWK1700160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe82746c2ce1257b3fed960a5ae309155529bc60296fdc3c3b51e64edfde5b454. 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/USBWK1700161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea78076fc8175616322b80f4c23a85cea1cc71225fb5a9f19b08cbfb32eb7df1. 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/USBWK1700162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd63c903e5bd540a4fae0bd3eb95c4ec60db10669b773dfa78d713c1e908bac5. 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/USBWK1700163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5359dcdf0171b2f11e271f7f213709c19f92c9287412486450d0f01823968460. 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/USBWK1700164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x080eac5ebfcd5c6470a20a234d0a0c3b000596f757e6bf4bc3cb3711836e3c34. 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/USBWK1700165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f516a52a98082206bacef13fbaae34b27833d75ac749027e94e720a66075db. 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/USBWK1700166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaddaebbfd31dab63643f5d7e0c28b720ed14b789bd0434cae54c559691bd851b. 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/USBWK1700167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0daaac215abf6ec243377a45e97005731575e48ab224caaca66ac9d8f3c4c531. 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/USBWK1700168.