Mansionz (stylized in lowercase) is an American alternative hip hop duo composed of musicians Mike Posner and blackbear. They released their self-titled debut album on March 24, 2017. History Mansi
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 0xaaf46c20502c11f5f879eb4965ef38cd14b55596d5a1007e5fa45e161d0ea125. 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/e7a6fa36-8c97-4401-8bb9-7ccd6510a55c.json and https://artists.proofprofile.net/proofs/artist/e7a6fa36-8c97-4401-8bb9-7ccd6510a55c.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 0xe58ed513c74f6be8236db5e8109765438a9acbfedd0ce278b838c5e0fdb68187. 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/USUG11701189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f3fd419d5263570f5169ea8229c4f8a793a5d393cb173be1917b65f0ff671a4. 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/USUG12308673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00ffa05f6cb303012b8d84602bb657267b85b024ef8755d8f4721cb40bdcf082. 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/USUG12308675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c4eddb614b834a718c9cd38722441efde008959ed5908cd1704eb17e4524768. 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/USUG12308677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289b72ab8328a50b071f6f38151ce96c20bc7bec592a8eb26442a89ec8f75f0e. 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/USUG12308679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa036ae33188d2f41beee5c7b1c8ce9729a85bc6afdbf6374146c804fd343db3d. 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/USUG12308681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5884dcffc1d69253e84ca09dc14060c2c609629bf4fbc958f66a478d57b91ead. 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/USUG12308683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe81fff4cd78699a5ead220536be82917957dc1b67b6fafe3e1e7df7cc3c0a204. 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/USUG12308685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b3fdc2248599739c45cba6ce3914e0b55664bc1df74920f793d80d8e3ec96d9. 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/USUG12308687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b53f2fdbda36abb18fbce05acae5e11fffac8f2637dd222db5c3ec9d7aedd33. 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/USUG12308689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2db456bddc9285e8924fe12922eeb97b7db1f0bd7f0c5d1c17ddc4468f7c67f. 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/USUG12308691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b301a6bfcf96abb69727563d1b4cb13303b7c16fba9754dede4015e450d0a4. 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/USUG12308693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdfa029ae77ffd0933cf675c0243eb484ff59186261fdc8fbcfbfdb1492e8835. 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/USUG12308695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b38e593871439ff0365118c297cad247aa747ea54e945cafcc05aaaa4d329f0. 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/USUG12308697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2b1494819a7d2980954bdf1279e5fab570cb376abce200fb5025acf185e25d. 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/USUG12308699.
Cum ruined food for me. i tasted it & im hooked. sorry mom.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc7736bb37800cc4292b00b5ecc5122ae35ca1c77614b37c5175e6be24b47233. 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/USUG12308700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36a30d3cc7dd234c1a3e6ec9b815cd6af85949a439d666b1a4b8f1cbb149df7d. 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/USUG11700254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe036140ffb8365542b76ae59e0ff454228e450bd1b1f2c299b884bc2a7c34500. 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/USUG11700389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef6cde0925c722c7501ed7a0209a7b1dd264814b11d04749318aad5106c9075. 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/USUG11601374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb89c002c2dc8161aa65b8b9d554d9c489a97af79e4ed098a6199200d0b200666. 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/USUG11700253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd25ce82db1648be17992cd0d86edf94930f837afbd06ce33d7276751439637d. 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/USUG11700255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x310b5a70eedc3eb98d464bbeb74efdebad630e57cbbb7f158ccdb699ef5a47c2. 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/USUG11700256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec0314952bb6d9b74c4484e96ba2c9c796a22cadd403c6a7236315bed1195d34. 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/USUG11700257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f379366b0d12493b3bf21ed4ec5e9f721a736ffeab8eac9c58fcc97354c65da. 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/USUG11700258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa59b82d2482bf14262fe3e937d8de04905af66d0cd39689a9ca49e8239e4725. 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/USUG11700023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb50d7dfb11a34148de97506bc2f033ffae6106456f251275c632a277acf10f78. 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/USUG11700259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f7fd02de7e4411bf7faa22eeca7b6e60fc17f3f45ec159285e262cf209fb066. 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/USUG11700260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x314423913e847d5855819e99e9e9f6c99084f734fd58613e3b995454529ba5c2. 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/USUG11700261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb969bf494dbd655716b26ba9e40daf5bd635d955bc67ac3a39e11c6b030f044. 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/USUG11700262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c2e223924683a49426b532b4ac5c5d87ec6ed92ba89a594127855838dd66b88. 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/USUG11701219.