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    Monday, August 24, 2020

    Ethereum Ways to cheer on the Ethereum core devs?

    Ethereum Ways to cheer on the Ethereum core devs?


    Ways to cheer on the Ethereum core devs?

    Posted: 24 Aug 2020 10:51 AM PDT

    Is there anyway we can celebrate the work Eth devs are doing on the Medalla Testnet? Kind of like how fans line up near the finish line to cheer racers in a marathon.

    I think anything we can do to keep spirits high on the final push to ETH 2.0 we should do!!

    submitted by /u/PrawDuhJee
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    Ethereum scam ad on YouTube? We should all report this to YouTube

    Posted: 23 Aug 2020 10:19 PM PDT

    please downgrade your nodes to parity ethereum 2.5 from last year

    Posted: 24 Aug 2020 09:21 AM PDT

    Chainlink Hackathon! 40k+ in Prizes. Register Today!

    Posted: 24 Aug 2020 01:16 PM PDT

    How an Ethereum Diamond Works Explained in 10 Tweets

    Posted: 24 Aug 2020 08:54 AM PDT

    Best place to buy Ethereum as a Canadian?

    Posted: 24 Aug 2020 03:31 PM PDT

    Hello all, sorry in advance if this is a stupid question but, what is the best place to buy crypto/ethereum if you live in Canada. I was planning on using coinbase, but i saw a few posts in other subreddits saying coinbase is bad for Canadians.

    submitted by /u/ifuckwithpink
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    Powers of tau selection for Hermez Rollup

    Posted: 24 Aug 2020 10:38 AM PDT

    Powers of tau selection for Hermez Rollup

    https://preview.redd.it/j38ntzxzkzi51.png?width=400&format=png&auto=webp&s=b8a0677142a1f1773bf6ec4d62821dfb3845e703

    We started the process to select the perpetual powers of tau for the Hermez Rollup.

    You can find the procedure here:

    https://ipfs.io/ipfs/QmYft5k2sY6KJ5V3hkw7FZmHLM7k33uMvwzQy9yC1gt8mF

    We also made a TX now to prove that we decided the procedure before the random number for the beacon is generated:

    https://etherscan.io/tx/0x98e38b88ed244a73ce7c1e3ab4f37439ae1faead555a20fd376496339adc2fed

    submitted by /u/jbaylina
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    Writing an EIP with Matt Garnett

    Posted: 24 Aug 2020 07:05 AM PDT

    The first episode of an EIP focused series is available at https://www.youtube.com/watch?v=Vnu4m4bBqCs.

    We hope this will help people understand the dos-don'ts before submitting an EIP for the first time. In this series, we're inviting authors to explain an EIP and answer community questions. So, if you're curious to learn about any EIP or have any questions for the author, please comment below.

    submitted by /u/poojaranjan19
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    Help with some basic kdf crypto?

    Posted: 24 Aug 2020 12:37 PM PDT

    Hey- I'm phildo, the guy who made expandpass. While expandpass doesn't directly make use of any cryptography, I've been using it to help crack people's ethereum (and other) passwords as a hobby/small business for the past couple years.

    Anyways-I wanted to play around with some of the cryptography involved on the other side of the equation (normally handled by hashcat). So I've created this playground repository (a single c++ file) to mess around with some concepts.

    I'm going off the v3 specification of a wallet file to try and replicate password verification, and something just isn't working.

    My (simple) process:

    1. take the scrypt of the password and salt using the parameters defined in kdf_params
    2. concatenate the 16-32 bytes of the result with the ciphertext
    3. run that through sha3_256
    4. the result should match mac

    Unfortunately, it doesn't. I'd appreciate any tips on why that may be. The current output I get (using data from the repository included testwallet.json) is:

    pkey: 2F299FEF2CA3390C63DABA7A13BA4CE9D60B7FC1E58DAFD5E1089D32CFD7219C ciphertext: C6D18F78AF6E5E7CEA4AB804D8B9A5F974CCF92EA2537416B90ABEBD77C6B580 cipher input: D60B7FC1E58DAFD5E1089D32CFD7219CC6D18F78AF6E5E7CEA4AB804D8B9A5F974CCF92EA2537416B90ABEBD77C6B580 keccak out: 7D31B612939A26418CAB1DF332D27B711CAACAA7A119013A01E1DB75DE508DAA mac: 89655FD4BB9CCF9DE0D8F1A78025A8616C9416EC700CFAAFEF17E76C7C47338E 

    Other details: I use the Botan library for crypto operations. If you edit the cmake file to point to your installed Botan path, and drop the .dll next to the resulting executable, you should be able to run this no problem on windows. (And I have no reason to believe this shouldn't work identically elsewhere).

    Any help would be greatly appreciated!

    submitted by /u/Phildos
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    Join Chainlink Hackathon September 7th - 27th. Massive prizes totaling over $40k+, amazing judges and support, let’s build some awesome tools.

    Posted: 24 Aug 2020 04:28 PM PDT

    Ropsten Testnet Network for proof of existence

    Posted: 24 Aug 2020 10:09 AM PDT

    Hello,
    I'm developing a Dapp using Ethereum to register files' hash in order to prove the existence and authenticity of the file.
    I tried to use ETH, but the gas/ transaction is almost $2, so it's pretty expensive for what I wanted to do.
    If I deploy the Dapp using the Ropsten Testnet, would the proof of existence has the same validity, or does the system resets after a while?

    submitted by /u/lilicaspike
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    QuikNode launches API support for xDai Chain

    Posted: 24 Aug 2020 05:32 AM PDT

    Is Ethereum DeFi really growing: how inflation could be distorting TVL and fueling a bubble

    Posted: 24 Aug 2020 05:45 AM PDT

    Nic Carter: What Ethereum’s Fees Mean for Its Future

    Posted: 24 Aug 2020 10:03 AM PDT

    Ethereum 2.0 Serenity - A Look at This Monumental Upgrade

    Posted: 24 Aug 2020 03:50 AM PDT

    The Defiprime Post #5: Your Weekly DeFi News in Bite-Sized Fashion

    Posted: 24 Aug 2020 08:51 AM PDT

    How to save your blockchain Start-Up from crashing: Smart Contract Audits

    Posted: 24 Aug 2020 08:47 AM PDT

    Crypto Trends 24 August 2020 �� ETH2 Testnet recovery ✅ Multifile smart contract verification �� MetaMask commercial forks license + OpenZeppelin Upgrades Plugins for Truffle & Buidler + Gnosis Safe App

    Posted: 24 Aug 2020 01:20 AM PDT

    How do you create a Etheruem paper wallet easily please ?

    Posted: 24 Aug 2020 06:14 AM PDT

    I am completely new to this and I would be really grateful if someone could explain this to me please.

    I need an easy way to create an Ethereum paper wallet. I tried this You Tube video but it moves to fast to follow and not clear text: https://www.youtube.com/watch?v=CU_PGNiGXE8

    I went to following but still did not work.

    https://kb.myetherwallet.com/en/offline/using-mew-offline/

    Thanking you in advance.

    submitted by /u/preparetochill
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    Do DEXes help with privacy, aside from no KYC?

    Posted: 24 Aug 2020 05:39 AM PDT

    When it comes specifically to privacy, how are DEXes better than CEXes aside from no KYC? Not talking about censorship resistance or anything else; only privacy.

    Every single ERC-20 token you trade on a DEX from your Web3 wallet will be tied to that wallet's ETH address, for all to see. This is worse than with centralized exchanges, because centralized exchanges don't write your trades on the blockchain.

    So many transactions later, once you've tied a token to your identity in any way (e.g. pay your landlord), all your activity through DEXes will be traced. Without even a subpoena to the DEX. This is less private than with CEXes, because CEXes would have to be subpoenaed to turn up your records.

    In the landlord example, your landlord can see everything you've ever done on the Ethereum blockchain with those coins at Etherscan.io, which also does wallet deanonymization.

    submitted by /u/bigoaktrees
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    Ressource Usage for Eth2 + Eth1 mainnet node

    Posted: 24 Aug 2020 01:07 AM PDT

    Smart Contract Exploits

    Posted: 23 Aug 2020 11:32 PM PDT

    Is there any possibility that a smart contact I have interacted with in the past could come back to haunt me?

    Say someone buys an S coin and stakes it, is it possible that someone could execute code to steal a different token out of my Ether wallet?

    submitted by /u/justsomenooby
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