2 Accounts Connected:

1. Adhar
2. Alayna1
2. Kulkhan
2. saymon320

Proof:

Quote from: Adhar on August 09, 2018, 05:42:26 AM

ETH Address: 0xb32d41a6903358396E27E6E437D850618bf4c341

Archive: https://archive.is/wip/YK5HN

Quote from: Alayna1 on October 04, 2020, 12:17:56 PM

ETH Wallet Address: 0xB623b53EC41F52A7BC0755A80f56e8f2bB2D2956

Archive:https://archive.is/wip/FurG8

Wallet got a little amount of Eth from what looks like a sleeping account Painbird's 0x7D2fFEcc8b702C8acB615AB6E5a6e1DDBa03b75a so that this user can move his staked yOUcash: YOUC Token from 0xB623b53EC41F52A7BC0755A80f56e8f2bB2D2956 address on the same day.

Quote from: Painbird on October 21, 2019, 06:59:15 AM

Twitter Profile Link : https://mobile.twitter.com/Shahinmridha6
ETH : 0x7D2fFEcc8b702C8acB615AB6E5a6e1DDBa03b75a

Archive:https://archive.is/wip/K8XCA

TX ID: https://etherscan.io/tx/0xba0f10661b0cebc146437378340e13d2b5a652101187c1e18f7e44f73dd5176b

User Alayna1 staked all of his/her YOUC Token in this wallet 0xb623b53ec41f52a7bc0755a80f56e8f2bb2d2956.

Token TXs: https://etherscan.io/address/0xb623b53ec41f52a7bc0755a80f56e8f2bb2d2956#tokentxns

Then the user moved all of his/her YOUC to 0x6e01ca90a57c81e912b9d43e7e1a45a05fc27641 in which the user Kulkhan also moved YOUC token in big amount from 0x45717370aeae8f36a4f1685f3bf94447f99049b7.

TX ID: https://etherscan.io/tx/0x106aa7b1aeaef140a451a795718f048db712220b45391c93b161290ace3ffa05

Quote from: Kulkhan on January 21, 2021, 03:40:27 AM

Ethereum Wallet Address: 0x45717370aeae8f36a4f1685f3bf94447f99049b7

Archive:https://archive.is/wip/1X1Bj

More connection between those two wallet in this case it is ETH in/out: https://etherscan.io/tx/0x0f646eb17d65ee680b3d0b792a60af86edb393143919fd91eb13aaaf1de51feb

Now user saymon320 also used his altaccount Adhar's altwallet address to enroll in the same campaign Youc bounty.

Quote from: Adhar on November 15, 2020, 02:33:35 PM

Twittet Profile Link : https://mobile.twitter.com/Shahin5690
ETH Wallet Address (ERC-20): 0x4b33a8CeF621B320869CebFCce082dced964897f

Archive: https://archive.is/wip/29apD

Quote from: Adhar on August 31, 2020, 03:01:32 AM

Telegram Username: @shahin322
ETH Wallet Address. 0xb32d41a6903358396E27E6E437D850618bf4c341

Archive: https://archive.is/wip/wW8RL

Youc Round 4 spreadsheet: https://docs.google.com/spreadsheets/d/1K1aBS1MBKHMwArIlFAIGr6Ew5gZmD6j_6vpuAqaFE3U/edit#gid=580327066

This user also enrolled in other bounties with his alts. For example:
1. Loyakk: https://docs.google.com/spreadsheets/d/18lQwYYD2tENJjW_EVG6rX1pCES3IvQDEmwPG8QDicvs/edit#gid=1864562992
2. IZX Bounty: https://docs.google.com/spreadsheets/d/1uQiJA88w-wWN_QnLNrPcFvc53pDB9FE1tv3TK0HmfaQ/edit

Related Addresses:

Code:

0xb32d41a6903358396E27E6E437D850618bf4c341
0xb623b53ec41f52a7bc0755a80f56e8f2bb2d2956
0x45717370aEae8f36a4F1685F3Bf94447F99049B7
0x4b33a8CeF621B320869CebFCce082dced964897f
0xEf654B70854d5A322581E90679D29599DA3E137d

Miscellaneous:
I have not added Painbird's account as there is not to prove that it is an alt of these account.