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Solidity News Thursday, February 1

Solidity News TLDR / Table of Contents

  • How To Learn Solidity: The Ultimate Ethereum Coding Guide
    • Step-by-step guide to learn Solidity. Learn To Build Blockchain Based Decentralized Applications on Ethereum Network! -Blockgeeks
    • ethereum, ethereum blockchain, Ethereum node, data, ethereum mainnet
  • Blockchain: 6 ways to master the technology in 2018
    • There can never be enough developers that have blockchain technology in their skillset. For those who look to master the technology, check out these six sources . . .
    • Blockstream co-founder, Joe Lubin, Pieter Wuille, Charlie Lee, career hub
  • Sharpe Platform Token (SHP) Bug Bounty – sharpecapital –
    • Announcing the Sharpe Platform Token Bug Bounty scheme, offering up to $25,000 in SHP per bug.
    • bug bounty, bug bounty program, bug bounty scheme, Foundation bug bounty,
  • Jobs ~
    • Smart Contract implementation, Solidity Developer, Crypto Content Writer, Smart Contracts, Sufficient knowledge
  • Registration
    • Disclaimer: Citizens of the United States are prohibited from participating. The Crowdsale of the RAO token is not the sale of a security. RadioYo will use the proceeds of the Crowdsale to advance the purposes outlined in its white paper. Virtual currency is not legal tender, is not backed by…
    • Rights Reserved. Privacy, RAO token, reasonable expectation, consumer protections, legal tender
  • How Solidity Events Are Implemented — Diving Into The Ethereum VM Part 6
    • In How To Decipher A Smart Contract Method Call we’ve learned how “method” is an abstraction built on top of simpler EVM primitives like “jump” and “comparison” instructions. In this article, we will…
    • data, log, pragma solidity,
  • YouTube
    • Bitcooooooneccccccyyyyyyttt
    • upload original content, YouTube,
  • virt-u/virt-u-network-token
    • virt-u-network-token – Virt-U Network Token
    • Google Chrome, latest Safari, old versions, Reload, Firefox

Score: 3802.5
URL: https://blockgeeks.com/guides/solidity/
Tweeted At: Wed Dec 13 15:35:01 +0000 2017
Publish Date: 2017-06-04T15:35:05+00:00
Author: Ryan Molecke

  • The Ethereum Virtual Machine (EVM) allows Ethereum nodes to actually store and process data in exchange for payment, responding to real-world events and allowing a lot of new opportunities to support on-chain applications that were never before available to developers and real-world users.
  • There are some key points to remember from the Ethereum Design Rationale document, namely that we are working within a stack-and-memory model with a 32-byte instruction word size, the EVM gives us access to the program “stack” which is like a register space where we can also stick memory addresses…
  • When an ethereum block is “mined”, the smart-contract deployments and function calls within that block (meaning those lined up to happen within the last block duration) get executed on the node that mines the block, and the new state changes to any storage spaces or transactions within that smart-contract actually…
  • This is why Ethereum smart-contracts (and smart-contracts in general in any blockchain system) must be deterministic: so that the network of nodes can always validate and maintain consensus about the new blocks coming in, in order to continue running.
  • If we take a look at the Oraclize documentation we see this interesting quote: – – So you should check out that docs section on “authenticity proofs” for more details, but the idea is that even when new Ethereum nerds, at some distant time in the future, spin up their…

Tags: ethereum, ethereum blockchain, Ethereum node, data, ethereum mainnet

Score: 1850
URL: https://blog.talentqrunch.com/blockchain-6-ways/
Tweeted At: Thu Feb 01 11:06:04 +0000 2018
Publish Date: 2018-01-08T18:52:42+00:00
Author: Read More

  • There can never be enough developers that have blockchain technology in their skillset.
  • For those who look to master the technology, check out these six sources . . . – – Let’s talk Bitcoin – – Andreas Antonopoulos is a known author (we specially recommend Mastering Bitcoin: Programming the Open Blockchain), he is host of Let´s talk Bitcoin podcast and has a highly…
  • Bitcoin.kn – – The host of this podcast, Trace Mayer, is an early advocate of Bitcoin and investor in key infrasctucture (Kraken, Armory, Bitpay, Bitmain).
  • Cryptovoices – – They have two different podcasts, one generic on cryptoeconomics and one focused on blockchain tech.
  • We link you with interesting companies, we share insights and create fun and informative events.

Tags: Blockstream co-founder, Joe Lubin, Pieter Wuille, Charlie Lee, career hub

Score: 1099.5
URL: https://medium.com/sharpecapital/sharpe-platform-token-shp-bug-bounty-b07d21163bf8
Tweeted At: Fri Oct 13 16:30:13 +0000 2017
Publish Date: 2017-10-13T15:14:25.852000+00:00
Author: Sharpe Capital

  • Sharpe Platform Token (SHP) Bug Bounty — up to $25,000 USD per bug!Following the recent completion of our security audit by CodeContext, we’re proceeding to open our bug bounty scheme, as recommended by our auditors.
  • You can download the complete security audit report as a PDF here.The Sharpe Platform Token (SHP) Bug Bounty program is now live, and will continue until further notice.Bounty ScopeThe bug bounty applies to the following GitHub repository bounty scope does not include any other code within the Sharpe Capital GitHub…
  • So, a bug or vulnerability with high impact and high likelihood would be considered to have a critical severity.The ‘OWASP’ spectrum determines the severity of a bug, as a function of its impact and have allocated an initial budget of 0.5% of SHP tokens raised for the bug bounty scheme….
  • The USD nominal amounts quoted assume that $20MM is raised during the sale.Note: Up to $30 USD (0.00015% SHP)Low: Up to $500 USD (0.0025% SHP)Medium: Up to $2,500 USD (0.0125% SHP)High: Up to $10,000 USD (0.05% SHP)Critical: Up to $25,000 USD (0.15% SHP)Determinations of severity will be made in collaboration…
  • Public disclosure on or after 6th November will disqualify participants from the bug bounty program.After 6th November (After pre-sale begins):Submit a report outlining the bug or vulnerability, with accompanying code and Truffle tests as required, to Use Disclosure PolicyAs outlined above, public disclosure in the form of GitHub Pull Requests are…

Tags: bug bounty, bug bounty program, bug bounty scheme, Foundation bug bounty,

Score: 520
URL: https://musards.org/jobs/
Tweeted At: Fri Jan 26 19:18:21 +0000 2018
Publish Date:
Author:

  • Work at one of the fastest growing companies in the Blockchain Sector today in return for attractive packages in addition to returns in our native token Musards 2.
  • Android App Developer – Knowledge of Android Studio/Eclipse and ability to integrate with Swarm hosts later 3.
  • iOS App Developer – Appropriate knowledge of XCode and Swift with integration of Swarm Hosts(IPFS) later 4.
  • UI/UX Designer – We require a designer with a minimalistic approach and sufficient knowledge of mockups for Apps and Graphics 5.
  • Crypto Content Writer – Content writer who has a vast pool of knowledge of Cryptocurrencies, Smart Contracts, DApps and DAOs and is up to date If you think you qualify for any of the above positions, please email us with links to your previous works at jobs@musards.org or Tweet us…

Tags: Smart Contract implementation, Solidity Developer, Crypto Content Writer, Smart Contracts, Sufficient knowledge

Score: 400
URL: https://rao.radioyo.fm/home/register
Tweeted At: Thu Feb 01 19:45:00 +0000 2018
Publish Date:
Author:

  • The Crowdsale of the RAO token is not the sale of a security.
  • RadioYo will use the proceeds of the Crowdsale to advance the purposes outlined in its white paper.
  • Virtual currency is not legal tender, is not backed by the government, and accounts and value balances are not subject to consumer protections.
  • The information in this email does not constitute investment advice or an offer to sell or invest in securities.
  • People who purchase tokens should not have a reasonable expectation of any future profits or the RAO increasing in value based on RadioYo, Inc. creating an ecosystem and building out the company’s platform.

Tags: Rights Reserved. Privacy, RAO token, reasonable expectation, consumer protections, legal tender

Score: 282
URL: https://blog.qtum.org/how-solidity-events-are-implemented-diving-into-the-ethereum-vm-part-6-30e07b3037b9?gi=2488f02a68d3
Tweeted At: Tue Jan 23 01:18:32 +0000 2018
Publish Date: 2018-01-21T14:20:48.931000+00:00
Author: Howard

  • start: 0x60 is the position in memory to load the data.size: 0x20 (or 32) specifies the number of bytes of data to load.The go-ethereum implementation for log0 looks something like this:func log0(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { mStart, mSize := stack.pop(), stack.pop() data…
  • The go-ethereum implementation actually generates these instructions using the same code, varying only in size, which specifies the number of topics to pop from stack.func makeLog(size int) executionFunc { return func(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { topics := make([]common.Hash, size) mStart, mSize :=…
  • The contract logs 5 times, using different data and topics:pragma solidity ^0.4.18;contract Logger { function Logger() public { log0(0x0); log1(0x1, 0xa); log2(0x2, 0xa, 0xb); log3(0x3, 0xa, 0xb, 0xc); log4(0x4, 0xa, 0xb, 0xc, 0xd); }}This contract is deployed on the Rinkeby test network.
  • See the full output: evmlog.json.A log item returned by the JSON API looks like this:{ “address”: “topics”: [ ], “data”: “blockNumber”: “0x179097”, “transactionHash”: “transactionIndex”: “0x1”, “blockHash”: “logIndex”: “0x2”, “removed”: false}Next, we can query for logs that matches the topic “0xc”:curl \ -X POST \ -H “Content-Type: application/json” \ –data ‘{…
  • See details.There should be two matching logs:{ “address”: “topics”: [ ], “data”: “blockNumber”: “0x179097”, “transactionHash”: “transactionIndex”: “0x1”, “blockHash”: “logIndex”: “0x4”, “removed”: false},{ “address”: “topics”: [ ], “data”: “blockNumber”: “0x179097”, “transactionHash”: “transactionIndex”: “0x1”, “blockHash”: “logIndex”: “0x5”, “removed”: false}Logging Gas CostsThe gas costs for the logging primitives depends on how many topics you…

Tags: data, log, pragma solidity,

Score: 7
URL: https://www.youtube.com/watch?feature=youtu.be&v=5U9UADobZ0w
Tweeted At: Thu Feb 01 05:47:19 +0000 2018
Publish Date:
Author:

    Tags: upload original content, YouTube,

    Score: 2.4
    URL: https://github.com/virt-u/virt-u-network-token/blob/master/.gitattributes
    Tweeted At: Wed Jan 31 14:24:42 +0000 2018
    Publish Date:
    Author: virt-u

      Tags: Google Chrome, latest Safari, old versions, Reload, Firefox

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