Merge pull request #478 from threefoldtech/development_pou_wallets

added pou wallets

src/knowledge_base/about/token_overview/special_wallets/stats_special_wallets.md

@@ -8,6 +8,7 @@
 - [Wisdom Council Wallets](#wisdom-council-wallets)
 - [Important Note](#important-note)
 - [Remarks](#remarks)
+- [Proof-of-Utilization Wallets](#proof-of-utilization-wallets)
 
 ***
 
@@ -54,3 +55,51 @@ ThreeFold DMCC (Dubai) is in the process of acquiring a substantial number of to
 - All foundation wallets are protected by members of the foundation (4 on 6 need to sign)
 - Signatures can be checked by going to detail of account and then to the stellar link
 - The foundation will never spend tokens if the markets cannot support it and all proceeds are 100% used for the benefit of the ThreeFold project.
+
+## Proof-of-Utilization Wallets
+
+There are some wallets associated with [proof-of-utilization](../../../farming/proof_of_utilization.md). These wallets are on TFChain.
+
+The addresses are the following:
+
+- Mainnet ThreeFold Foundation: 5DCaGQfz2PH35EMJTHFMjc6Tk5SkqhjekVvrycY5M5xiYzis
+- Mainnet Default Solution Provider: 5Dd6adUJH8wvqb9SPC96JdZ85nK1671MeMSxkPZ6Q7rE4byc
+- Testnet ThreeFold Foundation: 5H6XYX17yJyjazoLVZqxxEPwMdGn99wginjmFBKtjvk8iJ3e
+- Testnet Default Solution Provider: 5Esq6iLLBGGJFsCEXpoFhxHhqcaGqTvDasdwy8jPFDH1jYaM
+- Staking Pool: 5CNposRewardAccount11111111111111111111111111FSU
+
+To check the balance of any of those wallets, follow those steps:
+
+- Go to the Polkadot API ([Mainnet](https://polkadot.js.org/apps/?rpc=wss%3A%2F%2Ftfchain.grid.tf#/chainstate), [Testnet](https://polkadot.js.org/apps/?rpc=wss%3A%2F%2Ftfchain.test.grid.tf#/chainstate))
+- Under `selected state query`, select `system`
+- On the right drop down menu, select `account(AccountId32): FrameSystemAccountInfo`
+- Under `Option<AccountId32>`, write the wallet address of one of the three accounts displayed above
+- Click on the `plus` button on the far right of the `selected state query` line.
+
+As a general example, here's what it looks like:
+
+![Wallet example](./img/polkadot_wallet_example.png)
+
+Here are the outputs for three wallets shown above:
+
+- Mainnet ThreeFold Foundation
+
+![Mainnet TF Foundation Wallet](./img/wallet_tf_foundation_main.png)
+
+- Mainnet Default Solution Provider
+
+![Mainnet Solution Provider Wallet](./img/wallet_solution_provider_main.png)
+
+- Testnet ThreeFold Foundation
+
+![Testnet TF Foundation Wallet](./img/wallet_tf_foundation_test.png)
+
+- Testnet Default Solution Provider
+
+![Testnet Solution Provider Wallet](./img/wallet_solution_provider_test.png)
+
+- Staking Pool
+
+![Staking Pool Wallet](./img/wallet_staking_pool.png)
+
+> Note: To get the proper TFT amount, you need to account fo the fact that TFT uses 7 decimal places. For this reason, to get the proper quantity in TFT, move the decimal place by dividing by 1e7 (i.e. 1x10⁷).