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    Home Unlabelled Ethereum The true power of Ethereum: 133 ERC20 token transfers in one single transaction

    Ethereum The true power of Ethereum: 133 ERC20 token transfers in one single transaction

    December 17, 2018

    Ethereum The true power of Ethereum: 133 ERC20 token transfers in one single transaction

    The true power of Ethereum: 133 ERC20 token transfers in one single transaction

    Posted: 17 Dec 2018 07:07 AM PST

    The EVM is so powerful yet very little is known about its true potential.

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    So many processes can be optimized through several techniques.

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    In this etherscan transaction 133 ERC20 token transfers are batched together and executed with just one call by a smart contract written by me:

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    https://etherscan.io/tx/0x089e928a62e5bb63ad442298c00b54524e07eec93feac5be054590ccab3da6d1

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    submitted by /u/escursionista
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    Happy 1st birthday Dai!

    Posted: 17 Dec 2018 07:30 AM PST

    PRBS protocol proposal - An incentivized Whisper like protocol for status - Status

    Posted: 17 Dec 2018 07:38 AM PST

    If you have a Ledger Nano, you can turn Your Testnet Ether Into Real Bitcoin With Atomic Cross-Chain Swaps

    Posted: 17 Dec 2018 10:26 AM PST

    Radical Address -- The easiest way to get a human-readable name for your ethereum wallet

    Posted: 17 Dec 2018 09:47 AM PST

    A simple lottery where the winner must show a slice-of-life video to get the reward. The contract is done! Next step is the interface.

    Posted: 17 Dec 2018 02:09 AM PST

    Hey guys! Lotteries are one of the most boring applications of a smart contract platform. When explaining why to a friend, I said something like:

    They don't create any value! All they do is take money from one group and redistribute it to another group. It's a zero-sum game. And once you figure in gas costs, it's actually a negative-sum game! They say gambling is a tax on the mathematically illiterate. The only way a lottery would become interesting is if it did something more that just redistribute money.

    (In any case, we've already got a pointless money redistribution systems: ICOs!)

    That got me thinking: what could this "more" be? How would one structure a lottery to produce additional value? Well, Tom the Turtle said it best: "I've got an idea!"

    The Pitch

    For now I'll call it the Livestream Lottery. It's a basic lottery, where each ticket costs (say) $2, and if (say) 50 people enter, the winner would get $100, as you would expect. But instead of directly receiving the winnings, the winner must first livestream 1-2 min of video of their neighborhood.

    I'll get to how this is enforced below, but first, consider how this will feel to the 99 users who didn't win, compared to a normal lottery:

    • Their $2 won't just vanish into some random Ethereum address without a face or name. They'll get to virtually meet the beneficiary, which will make the $2 feel like less of a loss.
    • Each livestream produced this way will be from a semi-random location in the world, because Ethereum is a global platform. So not only do you see and meet the winner, but you're likely to see a slice of life from a different culture.
    • The winner will undoubtedly feel gratitude, and can express this directly to everyone who contributed.

    Emotionally speaking, this is a way better deal than a normal lottery, for both the losers and the winner. And if the lottery cycle time is relatively short (say, 10 minutes between user entry and the winner livestreaming), it even begins to sound fun. It's entirely conceivable that one might spend an hour and $12 to see a series of 6 short videos of random people winning $100 (or more?) and sharing their neighborhoods and culture, *in addition to* a provably fair chance of winning each time.

    The Mechanics

    So how is it enforced? How will the lottery "know" whether a livestream has been produced, and whether to release the prize?

    When the winner is chosen, a set of judges are also chosen via the same pseudorandom mechanic. If the winner does not produce the livestream in time, the judges are expected to vote to burn the prize. If some subset of judges (say, 2 of 5) do so, the prize is burned. Pretty simple! There are some corner cases involving a whale buying a majority of the tickets, but even then the game theory seems sound. Ask me in comments if you want to hear more!

    (This might be a good time to mention that I'm the guy behind the Toasted Money experiments. If nothing else, they proved that burn-capable contracts can have very fine-tuned incentives. Specifically, you can threaten a punishment without having to specify a beneficiary which would benefit from the punishment, allowing one to build a much purer incentive structure.)

    It's worth noting that this could incent any behavior or content creation, as long as 1. all players are in agreement about what is expected from a winner and 2. every player is theoretically capable of meeting the expectation. I chose livestreaming because it's value that anyone can provide, assuming they have a smartphone. But maybe there are better ideas? Comment if you've got one!

    Anyway, check out the first version of the contract if you're into that sort of thing.

    So When Will it be Ready?

    Who knows! After all I'm broke as fuck after this crash and niggas gotta eat, and there's no profit mechanism in the project. But I'm also a social creature who craves validation, so if people seem excited then that'll give me some oomph for sure.

    I'm also really hoping that someone reading this will be interested enough to help out, particularly with the interface. I'm not asking anyone to do it for me--just a helping hand. Reach out if this sounds fun!

    There's also the option of donating, although I'm not sure how likely that is in this climate. I'm happy to pledge 1 hour of dev time for every 0.1 ETH (~$10) I get at this address: 0xABa9F01af80568b5Aa52D1bccdb87b3dB18B1aDa. (It doesn't take much for cost of living in Vietnam ;) )

    If I get help, money, or social validation, we could slap this out in a week no problem, assuming we don't have to build the livestreaming completely from scratch.

    The Next Steps

    We'll need two more things to get this up and running:

    • An Interface. Essentially we'll need to display some info on the Lottery contract state, and provide a button to buy in and a "vote to burn" button that will show up for judges at the appropriate time. We'll also need a convenient way for the winner to share his stream link to other users (probably via a Solidity event and its JS listener). In the end, this will likely consist of a JS/web3js webpage sitting on Github Pages.
    • A Livestreaming Solution. Hopefully there is some already-built app out there that lets people broadcast from a mobile device and share a link, without requiring too much signup hassle for the broadcaster and even less hassle from viewers. Anyone know of any likely candidates? Otherwise we'd have to roll our own, which definitely puts this project scope further out than I'm going to go alone. Again, reach out if you can help solve this problem!
    submitted by /u/coinop-logan
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    Commit Reveal Scheme on Ethereum: Hiding Actions and Generating Random Numbers

    Posted: 17 Dec 2018 08:35 AM PST

    One of the examples, that Ethereum industry isn’t dead. Some of the projects are moving forward with strong USP and user bases.

    Posted: 17 Dec 2018 03:51 AM PST

    What are the differences between AZTEC protocol and Wanchain?

    Posted: 17 Dec 2018 07:30 PM PST

    Does Wanchain need to be it's own blockchain?
    After reading about AZTEC protocol, it sounded to me like the features of Wanchain could be created as a smart contract on Ethereum.

    submitted by /u/ynotplay
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    Optimistic Contracts – Dean Eigenmann

    Posted: 17 Dec 2018 07:19 AM PST

    Are Crypto-Collateralized Stablecoins Ticking Bombs?

    Posted: 17 Dec 2018 07:14 AM PST

    Bloomberg Crypto w/ @twobitidiot giving a little Maker #DAI love on its BirthDAI :) ��

    Posted: 17 Dec 2018 08:25 AM PST

    If Ethereum at PoS creates a hard cap supply at 120M then why would Ethereum Classic be considered for IoT?

    Posted: 17 Dec 2018 06:55 PM PST

    ELI5: How will it be decided what the max supply of eth will be?

    Posted: 17 Dec 2018 10:25 AM PST

    How to Swim in the Ocean: Introducing Squid libraries -- Aitor Argomániz, VP Engineering at Ocean Protocol

    Posted: 17 Dec 2018 10:12 AM PST

    Five Unsolved Challenges of Crypto Security Tokens

    Posted: 17 Dec 2018 04:50 PM PST

    Scalar Capital Summit 2018 - Smart Contracts Panel

    Posted: 17 Dec 2018 03:40 PM PST

    Step towards #DeFi : Tokenized Proof of Stake (PoS) validator slots

    Posted: 17 Dec 2018 09:42 AM PST

    Help me find a project on Ethereum; can't remember the name!

    Posted: 17 Dec 2018 11:53 AM PST

    I can't remember where I listened to this project, but I remember a few key details that should be enough to trigger other peoples memory.

    This project was about using Ethereum to store peoples DNA data on Ethereum. Addresses would be the owner of the DNA data, rather than someones actual identity. This prevents some centralized company like 23 and Me, from having access to boatloads of data about ones DNA, and their name, age, location etc.

    The presenter of this project was SUPER YOUNG. like 17! She was wicked smart, and into Biotech, but also into computer science. Crazy talented for her age. This project might have been presented at an ETH global event.

    Can anyone remember this?

    submitted by /u/davidahoffman
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    LocalEthereum is incentivising growth with a new referral program

    Posted: 17 Dec 2018 03:10 AM PST

    Alternatives to the term Smartcontracts

    Posted: 17 Dec 2018 02:47 PM PST

    Worthwhile topic is renaming smart contract with a more neutral ontology without legal baggage. Not a new topic: but a valid subject. Here are a few:

    Blockchain Scripts sounds clear and is concise ontology

    Of course the acronym will bother some. So as an alternative: Ethereum Scripts why not? Google became a word why not EtherScripts

    Two more: Digital Agreements too legalese? Then Engram

    submitted by /u/Nogo10
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    Disproving all of eth's value

    Posted: 17 Dec 2018 06:10 PM PST

    I'm a big believer in ETH and decentralization, but a friend of mine shoots down its viability all the time by saying:

    1. Since their code is open source, it's not valuable, someone can just fork it and build off of that. If that's true, why do companies even build on top of ETH instead of just forking it and using their own version of the blockchain?

    2. Another friend says blockchain is very valuable, but the concept of tokens is stupid and people can just use blockchain style technology for a service by tying it to USD.

    I'm never able to disprove these two things, probably due to a lack of my own knowledge. What would you say if someone brought these points up to you?

    submitted by /u/mikeyninja
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    JavaScript library for blockchain apps (works on mobile)

    Posted: 17 Dec 2018 05:40 AM PST

    The Salient Features Of Ripa Exchange Platform

    Posted: 16 Dec 2018 10:52 PM PST

    In a world where cryptocurrency has created a wave of transformation in the financial market, it is imperative to safeguard the crypto enthusiasts and pave the way for an enhance cryptocurrency trading by leveraging a reliable exchange platform. Ripa Exchange is a hybrid decentralized blockchain enable crypto asset marketplace which facilitates the industry standards for sharing liquidity between cryptocurrency assets and marketplace. The primary vision of Ripa Exchange platform is to promote shared source code required for wallets and exchanges in the digital token industry. Furthermore with the aid of a stable, reliable, and open source exchange platform, this will enable correct decision making while transacting with tokens, thereby ensuring the success of the project.

    The features of Ripa Exchange platform : 1. Open Source 2. KYC Verification 3. Transparent & Configurable 4. Internationalization 5. Proof of Solvency 6. Multi-Accounts 7. Enterprise Exchange 8. Functional & Intuitive

    For more information visit : https://ripaex.io/

    submitted by /u/PaulParson
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