{
  "block": 106146359,
  "op": [
    "delegate_vesting_shares",
    {
      "delegatee": "ksloven",
      "delegator": "steem",
      "vesting_shares": "7940.254448 VESTS"
    }
  ],
  "op_in_trx": 0,
  "timestamp": "2026-05-18T02:41:27",
  "trx_id": "b9d68ad82eba919fcd2b12d6b2065b28f7d75521",
  "trx_in_block": 1,
  "virtual_op": 0
}

{
  "block": 105987511,
  "op": [
    "delegate_vesting_shares",
    {
      "delegatee": "ksloven",
      "delegator": "steem",
      "vesting_shares": "5228.044043 VESTS"
    }
  ],
  "op_in_trx": 0,
  "timestamp": "2026-05-12T13:41:36",
  "trx_id": "7ba43dbfcb062f45ed7fb058887ce3ca0db0d81d",
  "trx_in_block": 0,
  "virtual_op": 0
}

{
  "block": 105513940,
  "op": [
    "delegate_vesting_shares",
    {
      "delegatee": "ksloven",
      "delegator": "steem",
      "vesting_shares": "7952.770204 VESTS"
    }
  ],
  "op_in_trx": 0,
  "timestamp": "2026-04-26T01:58:27",
  "trx_id": "2d7291f9e245cd01ba821402bbb16702cd39e0ff",
  "trx_in_block": 1,
  "virtual_op": 0
}

{
  "block": 102859633,
  "op": [
    "delegate_vesting_shares",
    {
      "delegatee": "ksloven",
      "delegator": "steem",
      "vesting_shares": "5269.590862 VESTS"
    }
  ],
  "op_in_trx": 0,
  "timestamp": "2026-01-23T14:19:45",
  "trx_id": "f0abeaedd3c40007418e7b36f3bbf1d84f5f4276",
  "trx_in_block": 1,
  "virtual_op": 0
}

{
  "block": 91305939,
  "op": [
    "delegate_vesting_shares",
    {
      "delegatee": "ksloven",
      "delegator": "steem",
      "vesting_shares": "5433.810059 VESTS"
    }
  ],
  "op_in_trx": 0,
  "timestamp": "2024-12-17T09:34:27",
  "trx_id": "e7f05b7988e9d9297d84ead602291ac6008a1dfe",
  "trx_in_block": 1,
  "virtual_op": 0
}

{
  "block": 79860120,
  "op": [
    "delegate_vesting_shares",
    {
      "delegatee": "ksloven",
      "delegator": "steem",
      "vesting_shares": "5602.943591 VESTS"
    }
  ],
  "op_in_trx": 0,
  "timestamp": "2023-11-14T01:16:21",
  "trx_id": "2a016846d28e69dbaa339e6ec44ace68f183e27e",
  "trx_in_block": 0,
  "virtual_op": 0
}

{
  "block": 78351258,
  "op": [
    "delegate_vesting_shares",
    {
      "delegatee": "ksloven",
      "delegator": "steem",
      "vesting_shares": "8540.222377 VESTS"
    }
  ],
  "op_in_trx": 0,
  "timestamp": "2023-09-22T00:41:45",
  "trx_id": "50bfaa072c630c00831a4853d44d87289d1ffc31",
  "trx_in_block": 0,
  "virtual_op": 0
}

{
  "block": 69116161,
  "op": [
    "delegate_vesting_shares",
    {
      "delegatee": "ksloven",
      "delegator": "steem",
      "vesting_shares": "8761.903815 VESTS"
    }
  ],
  "op_in_trx": 0,
  "timestamp": "2022-11-03T14:08:00",
  "trx_id": "5310348ea188699feb03772f02733f70b4c49889",
  "trx_in_block": 2,
  "virtual_op": 0
}

{
  "block": 60817176,
  "op": [
    "delegate_vesting_shares",
    {
      "delegatee": "ksloven",
      "delegator": "steem",
      "vesting_shares": "8982.138951 VESTS"
    }
  ],
  "op_in_trx": 0,
  "timestamp": "2022-01-17T17:27:24",
  "trx_id": "0a353ec972dbd8c9dfe14f864e7eab68d6a82d07",
  "trx_in_block": 7,
  "virtual_op": 0
}

{
  "block": 54610346,
  "op": [
    "delegate_vesting_shares",
    {
      "delegatee": "ksloven",
      "delegator": "steem",
      "vesting_shares": "9166.205704 VESTS"
    }
  ],
  "op_in_trx": 0,
  "timestamp": "2021-06-14T03:00:48",
  "trx_id": "e7fa22e6d95078001d04eb5c3b6bc84516a75534",
  "trx_in_block": 5,
  "virtual_op": 0
}

{
  "block": 49357722,
  "op": [
    "delegate_vesting_shares",
    {
      "delegatee": "ksloven",
      "delegator": "steem",
      "vesting_shares": "9353.627678 VESTS"
    }
  ],
  "op_in_trx": 0,
  "timestamp": "2020-12-11T13:16:51",
  "trx_id": "387bdf0485685c0cd696d48975ad5bfc850e7d55",
  "trx_in_block": 0,
  "virtual_op": 0
}

{
  "block": 49209270,
  "op": [
    "delegate_vesting_shares",
    {
      "delegatee": "ksloven",
      "delegator": "steem",
      "vesting_shares": "1912.543513 VESTS"
    }
  ],
  "op_in_trx": 0,
  "timestamp": "2020-12-06T06:53:24",
  "trx_id": "3718cb66c46b34d9fcb98951a642741f61845afe",
  "trx_in_block": 1,
  "virtual_op": 0
}

{
  "block": 49192812,
  "op": [
    "delegate_vesting_shares",
    {
      "delegatee": "ksloven",
      "delegator": "steem",
      "vesting_shares": "9359.835532 VESTS"
    }
  ],
  "op_in_trx": 0,
  "timestamp": "2020-12-05T16:54:48",
  "trx_id": "f787a138cb9d8882f0f2ec4023bc93b0c9061e84",
  "trx_in_block": 3,
  "virtual_op": 0
}

{
  "block": 48263090,
  "op": [
    "delegate_vesting_shares",
    {
      "delegatee": "ksloven",
      "delegator": "steem",
      "vesting_shares": "1920.017158 VESTS"
    }
  ],
  "op_in_trx": 0,
  "timestamp": "2020-11-02T20:07:42",
  "trx_id": "490b3afecfd3475cb737719173510fc96223a5a4",
  "trx_in_block": 0,
  "virtual_op": 0
}

{
  "block": 43219550,
  "op": [
    "delegate_vesting_shares",
    {
      "delegatee": "ksloven",
      "delegator": "steem",
      "vesting_shares": "9562.640891 VESTS"
    }
  ],
  "op_in_trx": 0,
  "timestamp": "2020-05-09T07:53:09",
  "trx_id": "1856f7ebbea5f2b10869311ac53ff60b4d0139f0",
  "trx_in_block": 21,
  "virtual_op": 0
}

{
  "block": 43196024,
  "op": [
    "delegate_vesting_shares",
    {
      "delegatee": "ksloven",
      "delegator": "steem",
      "vesting_shares": "1953.311140 VESTS"
    }
  ],
  "op_in_trx": 0,
  "timestamp": "2020-05-08T11:48:33",
  "trx_id": "ffed553fcd065ccb9d388771691aa397fe97c0fd",
  "trx_in_block": 18,
  "virtual_op": 0
}

{
  "block": 35474047,
  "op": [
    "delegate_vesting_shares",
    {
      "delegatee": "ksloven",
      "delegator": "steem",
      "vesting_shares": "9717.369133 VESTS"
    }
  ],
  "op_in_trx": 0,
  "timestamp": "2019-08-12T01:15:51",
  "trx_id": "b075e637b641f52219cd868a869bd32f075e81bd",
  "trx_in_block": 13,
  "virtual_op": 0
}

{
  "block": 33181613,
  "op": [
    "comment",
    {
      "author": "steemitboard",
      "body": "Congratulations @ksloven! You received a personal award!\n\n<table><tr><td>https://steemitimages.com/70x70/http://steemitboard.com/@ksloven/birthday1.png</td><td>Happy Birthday! - You are on the Steem blockchain for 1 year!</td></tr></table>\n\n<sub>_You can view [your badges on your Steem Board](https://steemitboard.com/@ksloven) and compare to others on the [Steem Ranking](http://steemitboard.com/ranking/index.php?name=ksloven)_</sub>\n\n\n###### [Vote for @Steemitboard as a witness](https://v2.steemconnect.com/sign/account-witness-vote?witness=steemitboard&approve=1) to get one more award and increased upvotes!",
      "json_metadata": "{\"image\":[\"https://steemitboard.com/img/notify.png\"]}",
      "parent_author": "ksloven",
      "parent_permlink": "the-zeppelin-ethernaut-ctf-series-fallout",
      "permlink": "steemitboard-notify-ksloven-20190524t071129000z",
      "title": ""
    }
  ],
  "op_in_trx": 0,
  "timestamp": "2019-05-24T07:11:30",
  "trx_id": "ad7dfc7636cd9820091ae9dfa1c97683d867210a",
  "trx_in_block": 4,
  "virtual_op": 0
}

{
  "block": 25438947,
  "op": [
    "delegate_vesting_shares",
    {
      "delegatee": "ksloven",
      "delegator": "steem",
      "vesting_shares": "9915.785317 VESTS"
    }
  ],
  "op_in_trx": 0,
  "timestamp": "2018-08-27T16:08:42",
  "trx_id": "c5d6244a94265ddc023ee1ad90c860dfd89b643a",
  "trx_in_block": 6,
  "virtual_op": 0
}

{
  "block": 22829724,
  "op": [
    "custom_json",
    {
      "id": "follow",
      "json": "[\"follow\",{\"follower\":\"ksloven\",\"following\":\"jemxpat\",\"what\":[\"blog\"]}]",
      "required_auths": [],
      "required_posting_auths": [
        "ksloven"
      ]
    }
  ],
  "op_in_trx": 0,
  "timestamp": "2018-05-28T15:52:39",
  "trx_id": "1ca329d82b525e2cf0e3e74886bdb83858ff59cd",
  "trx_in_block": 16,
  "virtual_op": 0
}

{
  "block": 22739039,
  "op": [
    "account_update",
    {
      "account": "ksloven",
      "json_metadata": "{\"profile\":{\"profile_image\":\"https://cdn.steemitimages.com/DQmNtzQt7payBkFj4raN3qbQouVSwym5oP6jk7QUba5pMae/DSC_0235.JPG\",\"name\":\"ksloven\",\"about\":\"A wanderer interested in crypto and security\",\"location\":\"Johannesburg, South Africa\",\"website\":\"https://github.com/ksloven\",\"cover_image\":\"https://cdn.steemitimages.com/DQmcFRjHz19CBdsRTw6kcby1YYjx1u4YHTgq6Lg6eoiowjd/Fal1Out-finished.png\"}}",
      "memo_key": "STM5Lo5fUYb8kKxts3Ybdka7hG9HKLS3orVu1GQWmeEE1JxmiqtYk"
    }
  ],
  "op_in_trx": 0,
  "timestamp": "2018-05-25T12:17:33",
  "trx_id": "623f6704e095c903403bacb234ccd547c035b566",
  "trx_in_block": 15,
  "virtual_op": 0
}

{
  "block": 22739028,
  "op": [
    "account_update",
    {
      "account": "ksloven",
      "json_metadata": "{\"profile\":{\"profile_image\":\"https://cdn.steemitimages.com/DQmNtzQt7payBkFj4raN3qbQouVSwym5oP6jk7QUba5pMae/DSC_0235.JPG\",\"name\":\"ksloven\",\"about\":\"A wanderer interested in crypto and security\",\"location\":\"Johannesburg, South Africa\",\"website\":\"https://github.com/ksloven\"}}",
      "memo_key": "STM5Lo5fUYb8kKxts3Ybdka7hG9HKLS3orVu1GQWmeEE1JxmiqtYk"
    }
  ],
  "op_in_trx": 0,
  "timestamp": "2018-05-25T12:17:00",
  "trx_id": "1884363af512a42d820a7a50e1cd7c2d96db9ccc",
  "trx_in_block": 14,
  "virtual_op": 0
}

{
  "block": 22738814,
  "op": [
    "vote",
    {
      "author": "ksloven",
      "permlink": "the-zeppelin-ethernaut-ctf-series-fallout",
      "voter": "hackerzizon",
      "weight": 100
    }
  ],
  "op_in_trx": 0,
  "timestamp": "2018-05-25T12:06:18",
  "trx_id": "18bd4ce46b7a651ebca88e52d25527c0cfb13957",
  "trx_in_block": 68,
  "virtual_op": 0
}

{
  "block": 22738804,
  "op": [
    "vote",
    {
      "author": "ksloven",
      "permlink": "the-zeppelin-ethernaut-ctf-series-fallout",
      "voter": "ksloven",
      "weight": 10000
    }
  ],
  "op_in_trx": 0,
  "timestamp": "2018-05-25T12:05:48",
  "trx_id": "ee10b608a7a8fb6e4dd2afd611cf1329167c4f96",
  "trx_in_block": 31,
  "virtual_op": 0
}

{
  "block": 22738800,
  "op": [
    "comment",
    {
      "author": "ksloven",
      "body": "Challenge number 2 is quiet easy.\nIn it, we are given a contract and we have to claim its ownership.\n\nHere is the contract in question:\n```\npragma solidity ^0.4.18;\n\nimport 'zeppelin-solidity/contracts/ownership/Ownable.sol';\n\ncontract Fallout is Ownable {\n\n  mapping (address => uint) allocations;\n\n  /* constructor */\n  function Fal1out() public payable {\n    owner = msg.sender;\n    allocations[owner] = msg.value;\n  }\n\n  function allocate() public payable {\n    allocations[msg.sender] += msg.value;\n  }\n\n  function sendAllocation(address allocator) public {\n    require(allocations[allocator] > 0);\n    allocator.transfer(allocations[allocator]);\n  }\n\n  function collectAllocations() public onlyOwner {\n    msg.sender.transfer(this.balance);\n  }\n\n  function allocatorBalance(address allocator) public view returns (uint) {\n    return allocations[allocator];\n  }\n}\n```\nIn Solidity, the first function that has the same name as the contract name is called the *constructor* and is called once when the contract is deployed.\nIf we look closely we can see that the contract name - `Fallout` - and the *constructor* - `Fal1out` - are written differently. That means `Fal1out` is not a *constructor* and can thus be called:\n\n`contract.Fal1out()`\n\nwait for the transaction to be sent and mined, which gets us here:\n![Fal1Out-finished.png](https://cdn.steemitimages.com/DQmcFRjHz19CBdsRTw6kcby1YYjx1u4YHTgq6Lg6eoiowjd/Fal1Out-finished.png)",
      "json_metadata": "{\"tags\":[\"blockchain\",\"crypto\",\"ethereum\",\"security\",\"zeppelin\"],\"image\":[\"https://cdn.steemitimages.com/DQmcFRjHz19CBdsRTw6kcby1YYjx1u4YHTgq6Lg6eoiowjd/Fal1Out-finished.png\"],\"app\":\"steemit/0.1\",\"format\":\"markdown\"}",
      "parent_author": "",
      "parent_permlink": "blockchain",
      "permlink": "the-zeppelin-ethernaut-ctf-series-fallout",
      "title": "The Zeppelin Ethernaut CTF series (FallOut)"
    }
  ],
  "op_in_trx": 0,
  "timestamp": "2018-05-25T12:05:36",
  "trx_id": "8ea471de50e3d17ad6d584dd6f1fd667e55b4eb2",
  "trx_in_block": 34,
  "virtual_op": 0
}

{
  "block": 22721278,
  "op": [
    "vote",
    {
      "author": "ksloven",
      "permlink": "the-zepplin-ethernaut-ctf-series-intro-and-fallout",
      "voter": "ksloven",
      "weight": 10000
    }
  ],
  "op_in_trx": 0,
  "timestamp": "2018-05-24T21:29:24",
  "trx_id": "b987ea1e914f83c59a270ad6e001bbed786aca90",
  "trx_in_block": 39,
  "virtual_op": 0
}

{
  "block": 22721211,
  "op": [
    "comment",
    {
      "author": "ksloven",
      "body": "They say the best way to learn something and to validate your understanding is to write about it and see if someone else understands it. This is the reason for this series of posts I will be doing.\n\nSometime in November  2017, Zeppelin released an Ethereum CTF (Capture the flag) (https://ethernaut.zeppelin.solutions). Since I have done  CTFs as a penetration tester, I thought this CTF would be a good introduction for me on Ethereum Smart Contract Security Auditing - something that interests me.\n\nYes, I know im late since this was released in 2017 November and i'm only doing it now in May 2018, but hey, rather late than never!\n\nThere are about 15 different smart contracts containing various vulnerabilities which one must abuse/hack to get the flag.\nI will divide this post into 15 parts of 1 challenge each for the sake of brevity. Besides the CTF being a nice introduction to smart contract (in)security, I also loved how much thought they put into the look of it.\n\n![Intro.png](https://cdn.steemitimages.com/DQmYSADRPFdTL5TFzcTaSsULW7sXngApYBwoYXxJzVb6tgc/Intro.png)\n\nThe first challenge is to authenticate. So you go to the Zeppelin site (https://ethernaut.zeppelin.solutions/level/0xdf51a9e8ce57e7787e4a27dd19880fd7106b9a5c) and follow the instructions. Those instructions take you through the steps of setting up metamask as well as the console to use to interact with the CTF. If you can manage to get this part right, then you are ready to proceed. *hint hint: don't overthink things*\n\nIf you managed to get things right, you should get a similar image:\n![level Complete.png](https://cdn.steemitimages.com/DQmY7iK4vA9U23N2PDQyZtyCEUfhnJxd2ZBpXjkureXAFYP/level%20Complete.png)\n\n\n# 1. Fallback \n![fallback.png](https://cdn.steemitimages.com/DQmbGQHhjKNsXRs9oopkidKbxUvygdktAx3KVDNXAd4M8qn/fallback.png)\n\nFor this challenge, we are given the following contract with these challenges:\n1. Claim ownership of the contract\n2. Drain its balance to zero\n\nHere is the contract:\n```\npragma solidity ^0.4.18;\n\nimport 'zeppelin-solidity/contracts/ownership/Ownable.sol';\n\ncontract Fallback is Ownable {\n\n mapping(address => uint) public contributions;\n\n function Fallback() public {\n    contributions[msg.sender] = 1000 * (1 ether);\n  }\n\n  function contribute() public payable {\n    require(msg.value < 0.001 ether);\n    contributions[msg.sender] += msg.value;\n    if(contributions[msg.sender] > contributions[owner]) {\n      owner = msg.sender;\n    }\n  }\n\n  function getContribution() public view returns (uint) {\n    return contributions[msg.sender];\n  }\n\n  function withdraw() public onlyOwner {\n    owner.transfer(this.balance);\n  }\n\n  function() payable public {\n    require(msg.value > 0 && contributions[msg.sender] > 0);\n    owner = msg.sender;\n  }\n}\n\n```\n\nPay attention to the `withdraw()` function, which is a function that could be used to transfer the balance to the caller. But you will note that it has an onlyOwner modifier, which means only the contract owner can call that function. \nReading through the contract, particularly the `contribute` function, one can see a way to win this challenge and move to the next level.\n\nEssentially, you have to put some value (ether) in `contributions`, call the `Fallback` function so we become owners of the contract, and being owners of the contract satisfied the `onlyOwner` modifier which entitles us to use the `withdraw()` function and thus drain the smart contract for all it's worth!\nThe following calls can be made:\n1.  contract.contribute({value: 2222})\n2.  contract.sendTransaction({value: 2222})\n3.  contract.withdraw()\n\nSend them one at a time and wait for the transaction to be mined before proceeding. After all have been mined, click on `submit instance`.",
      "json_metadata": "{\"tags\":[\"blockchain\",\"crypto\",\"ethereum\",\"security\",\"zeppelin\"],\"image\":[\"https://cdn.steemitimages.com/DQmYSADRPFdTL5TFzcTaSsULW7sXngApYBwoYXxJzVb6tgc/Intro.png\",\"https://cdn.steemitimages.com/DQmY7iK4vA9U23N2PDQyZtyCEUfhnJxd2ZBpXjkureXAFYP/level%20Complete.png\",\"https://cdn.steemitimages.com/DQmbGQHhjKNsXRs9oopkidKbxUvygdktAx3KVDNXAd4M8qn/fallback.png\"],\"links\":[\"https://ethernaut.zeppelin.solutions\",\"https://ethernaut.zeppelin.solutions/level/0xdf51a9e8ce57e7787e4a27dd19880fd7106b9a5c\"],\"app\":\"steemit/0.1\",\"format\":\"markdown\"}",
      "parent_author": "",
      "parent_permlink": "blockchain",
      "permlink": "the-zepplin-ethernaut-ctf-series-intro-and-fallout",
      "title": "The Zepplin Ethernaut CTF series (Intro & FallOut)"
    }
  ],
  "op_in_trx": 0,
  "timestamp": "2018-05-24T21:26:03",
  "trx_id": "e5e02671bf3bf628de3e195b799af3784c6f84e2",
  "trx_in_block": 66,
  "virtual_op": 0
}

{
  "block": 22704234,
  "op": [
    "delegate_vesting_shares",
    {
      "delegatee": "ksloven",
      "delegator": "steem",
      "vesting_shares": "30307.367141 VESTS"
    }
  ],
  "op_in_trx": 0,
  "timestamp": "2018-05-24T06:59:03",
  "trx_id": "88cef61d67ca24708536717355f1fd012cde6d63",
  "trx_in_block": 10,
  "virtual_op": 0
}

{
  "block": 22703932,
  "op": [
    "account_update",
    {
      "account": "ksloven",
      "json_metadata": "{\"profile\":{\"profile_image\":\"https://cdn.steemitimages.com/DQmNtzQt7payBkFj4raN3qbQouVSwym5oP6jk7QUba5pMae/DSC_0235.JPG\",\"name\":\"ksloven\",\"about\":\"A wanderer interested in crypto and security\",\"location\":\"Johannesburg, South Africa\"}}",
      "memo_key": "STM5Lo5fUYb8kKxts3Ybdka7hG9HKLS3orVu1GQWmeEE1JxmiqtYk"
    }
  ],
  "op_in_trx": 0,
  "timestamp": "2018-05-24T06:43:57",
  "trx_id": "932de42a302a3aff662c57e96d1fe1046b7c1a54",
  "trx_in_block": 2,
  "virtual_op": 0
}

{
  "block": 22703198,
  "op": [
    "account_create_with_delegation",
    {
      "active": {
        "account_auths": [],
        "key_auths": [
          [
            "STM585szSz97efZYrnp4sgbSxsC4v6e6Wusv3K4CqQRSwGVnyhhSh",
            1
          ]
        ],
        "weight_threshold": 1
      },
      "creator": "steem",
      "delegation": "30690.000000 VESTS",
      "extensions": [],
      "fee": "0.100 STEEM",
      "json_metadata": "{}",
      "memo_key": "STM5Lo5fUYb8kKxts3Ybdka7hG9HKLS3orVu1GQWmeEE1JxmiqtYk",
      "new_account_name": "ksloven",
      "owner": {
        "account_auths": [],
        "key_auths": [
          [
            "STM5DH4LxUJG5hFwFz3fQWKvwWnnLvf5qnSsCMJ22E7RHKAcb1ips",
            1
          ]
        ],
        "weight_threshold": 1
      },
      "posting": {
        "account_auths": [],
        "key_auths": [
          [
            "STM8jnB7dGDVcY21JZKEBqfnx3JMCUcsBMxQEdoZQCvdR2chuZUky",
            1
          ]
        ],
        "weight_threshold": 1
      }
    }
  ],
  "op_in_trx": 0,
  "timestamp": "2018-05-24T06:07:15",
  "trx_id": "b12a44919b4e3bcb7dd337e11ae8963aebcc7567",
  "trx_in_block": 2,
  "virtual_op": 0
}