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RT @galeki3: Some further thoughts about Unconfirmed Transactions: https://t.co/lEMj6A6uwO


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RT @bajodayo: @wasonga_molly wrote an interesting article https://t.co/zXROBmYPwt about how #blockchain can be used to combat corruption an…


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RT @CryptoDemetrius: Glad to see Monetary System functionality on #Ardor platform's child chains getting more attention! It's a powerful to…


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PRESS RELEASE: Free class for beginners on Lightweight Contracts!

PRESS RELEASE Lightweight contracts are now live on the Ardor TestNet! But what does this mean for the average Ardor user? There are many articles about Lightweight Contracts but the information is often abstract and hard to understand. Fortunately, a new class on Udemy has been released that makes lightweight contracts easy to understand! The ... Read more The post PRESS RELEASE: Free class for beginners on Lightweight Contracts! appeared first on NXTER.ORG.

Nov. 27, 2018, 3:11 p.m.
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TWITTER

So many developers at one place! We are excited to be at the Global Tech Summit in #Sofia with Java2Days and CodeMo… https://t.co/O3mXY40ncl


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REDDIT

Can anyone explain to me, what IGNIS is or can be used for?

I know that it's the first ardor childchain. but why would anyone use it and why should it have value? honest question here, I really don't understand it. Which probably explains, why it's not worth anything. ​ Couldn't you just use Ardor wherever you could use IGNIS? ​ Thanks for any input.

/r/Ardor
Nov. 27, 2018, 9:01 a.m.

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TWITTER

These features that #Ethereum are trying to get in production are a good move. Although, #Ardor has these features… https://t.co/FigQLHwfKN


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REDDIT

GPS Tokens, The Triffic Monetized Asset on the Ardor Ecosystem



/r/Nxt
Nov. 27, 2018, 7:45 a.m.

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TWITTER

RT @RyaCommunity: It is coming #RYA main net . #makingmoneybetter #proofoftrust @RyaCommunity https://t.co/sMZ9oBRIbu


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TWITTER

RT @madfox1234: Every week @Nxter_org releases a puzzle for your pleasure. Inside the puzzles lie an $IGNIS reward sponsored by @Ardor_Nxt_…


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TWITTER

#Blockchain will be an important accelerator to the energy flippening. #Ardor is ready to spawn your own chain, eas… https://t.co/mPSlKglAE5


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TWITTER

$NXT celebrated 5 years this weekend and here is the perfect article article to get the perspective of it's place i… https://t.co/PdFf1D0hIC


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RT @blockpublisher_: Nxt: An OG of the Cryptoverse https://t.co/Ipc93pupDY @nxtcommunity


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TWITTER

📷 #cybermondaydeals - No thanks! I’m buying #crypto this year! $BTC $ARDR $NXT $IGNIS #cryptocurrency... https://t.co/InlRXIULZr


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#cybermondaydeals - No thanks! I'm buying #crypto this year! $BTC $ARDR $NXT $IGNIS #cryptocurrency #bitcoin… https://t.co/hNiiBRop88


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#Ardor #LightweightContracts rely on hashed secrets to make sure user funds are not locked by the contract account.… https://t.co/N9AOZwI9Sp


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Too Many Secrets

Ardor Contracts Require Secure and Simple to Use SecretsSecrets — Photo by Gabby Orcutt on UnsplashIn the movie Sneakers (1992), there is a mysterious corporation the protagonists are investigating called “Setec Astronomy”. There is a pivotal scene where Robert Redford puts down Scrabble tiles and spells out the name “Setec Astronomy”, and then starts rearranging the letters to discover that the name is an anagram of “Too Many Secrets”, and the company is in the business of cracking codes. Fast-forward 26 years and code cracking is no longer reserved for Hollywood blockbusters - many people make a decent living from cracking private keys and hijacking crypto currency accounts by revealing their secrets.In my previous lightweight contract article, I explained how we can use a hash of a secret to make sure a transaction which triggers a contract, and a transaction submitted by a contract in response, can be either approved at the same time or ignored at the same time. This raises the question: how do you generate a good secret?The secrets we generate must be:Difficult to crack — ideally it should be as strong as an account passphrase.Unique — secrets must be unique since once a secret is revealed its hash can never be safely reused.Simple to remember — in some cases, we need to reveal a secret long after its hash was submitted. Ideally, it should be simple to remember a secret and even possible for the secret generator to recover a secret in case it was lost.A naive attempt would be to concatenate my dog’s name with my cat’s name and add my wedding date as a postfix for extra security. This secret is indeed simple to remember but it is not unique, once I reveal it to the blockchain I can never reuse it. Furthermore, it is certainly insecure in case Jihan Wu decides to dedicate his hashing power into cracking it. Adding a counter at the end will guarantee uniqueness but would offer little help against an attacker equipped with a rainbow table.But wait a minute, as an Ardor user I already posses one piece of information which is impossible to brute force: my account passphrase. Can we do something with it?Can we use the passphrase itself as a secret? Surely not since we don’t want to reveal it to blockchain. Can we use a hash of the passphrase as a secret? Not unique. Damn! What if we append a counter to the end of the passphrase and then hash it? Now we are getting somewhere, this is secure and unique.A hash of the concatenation of a passphrase and a one time unique number (which we call “nonce”) will generate a unique secret which is simple to remember as long as you remember the nonce. We assume that you remember the passphrase since if you don’t all is lost anyway.This is quite a good secret generation process: every time we need a secret we increase the nonce by one, concatenate it with the passphrase, hash it using SHA256 and use this as the secret. When submitting the hashed secret we hash it again of course.But there are still problems, if we need to generate a massive number of secrets, like millions, the nonce becomes difficult to remember. If we generate the secrets on multiple workstations it is difficult to ensure the nonce uniqueness so there is a risk that we repeat the secret from time to time.Solution — generate secrets which are impossible to crack, unique and simple to remember and even can be reproduced by the generator if lostTo solve this we need to add another twist, we concatenate to the end of the secret, already composed of passphrase + nonce, the block id of a block which is “nonce” blocks in the past and we limit the nonce range between 1 and 9999. We then hash the resulting string and use it as a secret. We hash this secret again when submitting our transaction with the hashed secret and reveal it to approve our transaction once we verify the contract operations.Our new secret is secure since it is based on the account passphrase that only we know. It is unique since it is based on an increasing counter and a block id which changes every minute. Last, it is simple to remember since all we need to remember is the block height at the time the secret was generated and the four digit nonce.Even if we forget our secret, we can easily recover it, all we need to do is check 10000 combinations for each block height, a simple calculation that can be performed by any modern workstation.Generate a Secure Secret

Nov. 26, 2018, 3:47 p.m.
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Too Many Secrets

Ardor Contracts Require Secure and Simple to Use SecretsSecrets — Photo by Gabby Orcutt on UnsplashIn the movie Sneakers (1992), there is a mysterious corporation the protagonists are investigating called “Setec Astronomy”. There is a pivotal scene where Robert Redford puts down Scrabble tiles and spells out the name “Setec Astronomy”, and then starts rearranging the letters to discover that the name is an anagram of “Too Many Secrets”, and the company is in the business of cracking codes. Fast-forward 26 years and code cracking is no longer reserved for Hollywood blockbusters - many people make a decent living from cracking private keys and hijacking crypto currency accounts by revealing their secrets.In my previous lightweight contract article, I explained how we can use a hash of a secret to make sure a transaction which triggers a contract, and a transaction submitted by a contract in response, can be either approved at the same time or ignored at the same time. This raises the question: how do you generate a good secret?The secrets we generate must be:Difficult to crack — ideally it should be as strong as an account passphrase.Unique — secrets must be unique since once a secret is revealed its hash can never be safely reused.Simple to remember — in some cases, we need to reveal a secret long after its hash was submitted. Ideally, it should be simple to remember a secret and even possible for the secret generator to recover a secret in case it was lost.A naive attempt would be to concatenate my dog’s name with my cat’s name and add my wedding date as a postfix for extra security. This secret is indeed simple to remember but it is not unique, once I reveal it to the blockchain I can never reuse it. Furthermore, it is certainly insecure in case Jihan Wu decides to dedicate his hashing power into cracking it. Adding a counter at the end will guarantee uniqueness but would offer little help against an attacker equipped with a rainbow table.But wait a minute, as an Ardor user I already posses one piece of information which is impossible to brute force: my account passphrase. Can we do something with it?Can we use the passphrase itself as a secret? Surely not since we don’t want to reveal it to the blockchain. Can we use a hash of the passphrase as a secret? Not unique. Damn! What if we append a counter to the end of the passphrase and then hash it? Now we are getting somewhere, this is secure and unique.A hash of the concatenation of a passphrase and a one time unique number (which we call “nonce”) will generate a unique secret which is simple to remember as long as you remember the nonce. We assume that you remember the passphrase since if you don’t all is lost anyway.This is quite a good secret generation process: every time we need a secret we increase the nonce by one, concatenate it with the passphrase, hash it using SHA256 and use this as the secret. When submitting the hashed secret we hash it again of course.But there are still problems, if we need to generate a massive number of secrets, like millions, the nonce becomes difficult to remember. If we generate the secrets on multiple workstations it is difficult to ensure the nonce uniqueness so there is a risk that we repeat the secret from time to time.Solution — generate secrets which are impossible to crack, unique and simple to remember and even can be reproduced by the generator if lostTo solve this we need to add another twist, we concatenate to the end of the secret, already composed of passphrase + nonce, the block id of a block which is “nonce” blocks in the past and we limit the nonce range between 1 and 9999. We then hash the resulting string and use it as a secret. We hash this secret again when submitting our transaction with the hashed secret and reveal it to approve our transaction once we verify the contract operations.Our new secret is secure since it is based on the account passphrase that only we know. It is unique since it is based on an increasing counter and a block id which changes every minute. Last, it is simple to remember since all we need to remember is the block height at the time the secret was generated and the four digit nonce.Even if we forget our secret, we can easily recover it, all we need to do is check 10000 combinations for each block height, a simple calculation that can be performed by any modern workstation.Generate a Secure SecretToo Many Secrets was originally published in The Startup on Medium, where people are continuing the conversation by highlighting and responding to this story.

Nov. 26, 2018, 3:47 p.m.
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REDDIT

Is Ardor too early? Timing is everything



/r/Ardor
Nov. 26, 2018, 12:46 p.m.

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TWITTER

RT @StexExchangeR: 🚀 AEUR alights at STEX platform🚀 AEUR info: https://t.co/Zpgorqw4TO Trade now: https://t.co/VNw4hYK7Y8 https://t.co/fzCe…


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TWITTER

RT @MrV_777: Euro pegged stablecoin on Ardor listed https://t.co/TP80Jvev2s


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TWITTER

RT @bajodayo: A red market leaves opportunity to buy more and most importantly do your research on the real #blockchain projects with promi…


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TWITTER

RT @TarascaD: This is going to be an exciting week for Tarasca DAO. Stay tuned! $ARDR #collectibles


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TWITTER

RT @Ardorgate: Now you can trade $AEUR against @BTC at @StexExchangeR exchange! Small step forward, happy trading. https://t.co/SB6O9s10RY


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TWITTER

Launching interoperable #RewardsPoints, loyalty programs, and #gaming tokens is easier than ever on the #Ardor plat… https://t.co/cqPGyYLlQs


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TWITTER

RT @NXT_Espana: Soluciona el acertijo con motivo del aniversario de Nxt y gana 5000 $NXT y un ebook gratuito #blockchain #Criptomonedas #a…


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RT @NXT_France: Joyeux anniversaire #Nxt! Gagnez 5000 $NXT + un ebook gratuit, en résolvant ce puzzle d'anniversaire du Nxt. #blockchain #c…


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TWITTER

Another busy week is ahead for our team members, #Jelurida is sponsoring and exhibiting at 2 big conferences: Globa… https://t.co/8tdDaLRj0K


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TWITTER

RT @efunkonline: @olech_mike @AvdiuSazan If your followers want to check out some great classes about Ardor, here’s a great introduction: h…


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TWITTER

RT @AvdiuSazan: #Ardor is the next generation of $NXT blockchain and a strong contender for enterprise partnerships, development, and imple…


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TWITTER

RT @CryptoDemetrius: "#Blockchain as a service" offerings continue to grow - from #IBM, to #Microsoft, to #Oracle, to unlaunched platforms…


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TWITTER

RT @AvdiuSazan: The developers behind Ardor are the same ones of $NXT, the first #blockchain ever built from scratch. #Ardor frees itself f…


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TWITTER

RT @olech_mike: Still remember when $NXT was born. My first Altcoin, which offered additional functionality to #Cryptocurrency and not a $B…


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TWITTER

RT @efunkonline: Seems like it should be easy to build a fantasy football application on Ardor/Ignis @Jelurida. Each player is a singleton…


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REDDIT

Introducing Triffic, Turning Miles into Money



/r/Ardor
Nov. 26, 2018, 3:50 a.m.

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TWITTER

Attended today a lecture about Cryptography & Complexity theory with Professor Yuval Ishai @TechnionLive as a free… https://t.co/ODf2nkR9CE


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TWITTER

RT @ISDI_edu: #ISDI Labs sobre #Blockchain con @veronicatorras y @albefero Los alumnos del #MIB Barcelona aprenden de manera práctica la im…


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TWITTER

RT @albefero: @ISDI_edu @veronicatorras Para nosotros ha sido un placer. Con alumnos así de aplicados, la adopción de #blockchain en empres…


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TWITTER

RT @TarascaD: Proud to build real uses in this technology. 5 years of reliable, sustainable and safe operation of the richest blockchain of…


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TWITTER

#russian #Ardor $IGNIS and $NXT ecosystem > https://t.co/y9fLLBsVBV Невозможного способен достичь лишь тот, кто про… https://t.co/f71ELqNBpA


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TWITTER

I do not work in Jelurida, the project https://t.co/jGS7hinxlZ is my personal project.


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RSS

Nxter News — Ноябрь 2018 III: Невозможного способен достичь лишь тот, кто пробует абсурдное

Nxter News | Ноябрь 2018 (III) Невозможного способен достичь лишь тот, кто пробует абсурдное Добро пожаловать, дорогие Некстеры и прочие последователи! Когда я заинтересовался блокчейном, стал последователем Nxt и начал писать дайджесты новостей, потенциал Nxt мне казался практически абсурдным. Я влюбился в идею дешевых заграничных транзакций 24/7, децентрализацию, учет неучтенного, а затем, по мере развития ... Read more The post Nxter News — Ноябрь 2018 III: Невозможного способен достичь лишь тот, кто пробует абсурдное appeared first on NXTER.ORG.

Nov. 25, 2018, 1:32 a.m.
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REDDIT

Ardor.World : News digest 25.11.18



/r/Ardor
Nov. 25, 2018, 1:31 a.m.

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TWITTER

The first spam attack on Ignis blockchain🚀 https://t.co/U11SLe16Su $ARDR $IGNIS $NXT #Ardor #Ignis #Nxt… https://t.co/omWdrVzePL


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TWITTER

RT @ardor_world_ru: https://t.co/oTuxD1C4Ix - Дайджест новостей 25.11.18 https://t.co/ZD5sJDjOoS $crypto $nxt $ARDR $ignis #ardor #nxt…


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TWITTER

http://Ardor.World  - Дайджест новостей 25.11.18 https://www.ardor.world/ru/news/2018/11/25/dajdzhest-novostej-251118/ … $crypto $nxt $ARDR $ignis #ardor #nxt #ignis #blockchain #cryptocurrency #CryptoNews #криптовалюты #блокчей pic.twitter.com/94GR0Wgloa


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TWITTER

https://t.co/jGS7hinxlZ : News digest 25.11.18 https://t.co/p9QhZpip7M $ARDR $IGNIS $NXT #Ardor #Ignis #Nxt… https://t.co/TmxA7ZUQMB


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TWITTER

Many thanks @Ardor_Nxt_Group! https://t.co/TY1n7sus3z #blockchain #Nxt #crypto $NXT https://t.co/cJtNiac02Y


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TWITTER

RT @POSfan_78: We are still building and expanding our $Ardor $NXT Group Discord channel, and you are welcome to join! Help us to spread th…


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RT @efunkonline: New class on building a #blockchain explorer coming out soon! - No coding background required - Build a fully functional…


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