Sia faces withdrawal issues

Sia (SiaCoin) wallet's issues: the appearence and the solution
13 June 2017   788
SiaCoin

Is a cryptocurrency for the actively developed decentralized private cloud data storage service Sia

A decentralized cloud storage SiaCoin has reported on some withdrawal issues recently. 

Now, the company unveils the details of the problem in its blog.

What happened 

Blockchain

Distributed database that is used to maintain a continuously growing list of records, called blocks

According to the report, the wallet issues were caused by a major spike in transaction volume on the Sia blockchain. 

As SiaСoin entered May with a market cap of ~$30M, the things grew fast and quickly increased to over $400M by early June. That's why when the users transferred their coins out of exchanges, and became hosts and renters on the Sia network, the number of transactions grew significantly as well. As a result, the transaction pool, at 2 MB in size, occasionally filled up at peak times. If the pool is full, new transactions get thrown away. Since miners pick transactions from the pool to form blocks, any transaction that is not included in the pool will not be added to the Sia blockchain.

So, as users requested withdrawals from Poloniex and Bittrex, the exchanges broadcasted the transactions to the network — but didn’t check to make sure they actually were added to the blockchain. The transactions were marked as complete as soon as they were broadcasted. This caused a lot of confusion, since users with completed transactions were not seeing their coins appearing in their wallets, reports Sia team.

What was done

  1. Add support for getting and sending raw transactions
    Allows exchanges to grab a raw transaction associated with an ID and re-broadcast it to the network.
  2. Add logging to the wallet
    Improve logging so that exchanges can more easily know if a transaction confirmed.
  3. Try reverted transactions in tpool Update()
    Every reverted transaction will now be retried to be added in the pool. Long-term upgrade for transaction pool to make reorgs less disruptive.
  4. Add logging for failed transaction sends
    Further improved logging.
  5. Prune unconfirmed transactions older than 12 blocks from the tpool
    Allows transaction pool to naturally clear of glut, preventing obtuse network fragmentation.
  6. Add API support for send-to-many
    Allows exchanges to process 25x the withdrawals per hour, using 1/3 the blockchain space per withdrawal.
  7. Add market based transaction accepting and fee estimation
    Add a fee market to allow high priority transactions to go through.
  8. Tpool block estimation
    Help drive intelligent fee estimation.
  9. Optimize Block.MerkleRoot by replacing tree.PushObject calls
    Performance optimization to safely allow for a bigger transaction pool.
  10. Add /tpool/fee endpoint
    Allow visibility into fee market prices.
  11. Add support for user-set txn fees
    Allow users to choose their own fees.
  12. Optimize Transaction.ID() by adding direct calls to MarshalSia
    Optimization to allow safe larger transaction pool.
  13. New Block Fee Estimation Algo
    More optimal fee estimation.
  14. Switch to diff-based updates for tpool
    Scalability upgrade with stress tests to allow safe larger transaction pool.

Feb 22: New Crypto Listings on Exchanges

From this article you will learn which cryptocurrencies are listed on exchanges on February 22 of 2018
22 February 2018   121

There is a non-stop turnover of cryptocurrencies on the popular crypto exchanges, and there are a lot of digital coins and tokens being listed on the exchanges every day. From this article you will get to know which currencies and trading pairs will be added to the exchanges on February 22 of 2018.

DADI (DADI)

Exchanges: COBINHOOD

DADI is an acronym for Decentralised Architecture for a Democratic Internet. DADI provides a ready-to-roll Web Services framework with data at its heart, enabling the creation of real time, individually targeted experiences.

dadiDADI charts

Crypto Exchange: COBINHOOD
Category: token
Price at the moment of press: 
$0,4
24h volume: $2 895 490
Website and Explorer

Fusion (FSN)

Exchange: COBINHOOD

FUSION is a public blockchain devoting itself to creating an inclusive cryptofinancial platform by providing cross-chain, cross-organization, and cross-datasource smart contracts.

FSNFSN charts

Crypto Exchange: COBINHOOD
Category: token
Price at the moment of press: 
$3,44
24h volume: $770 519
Website and Explorer

Neuromation (NTK)

Exchanges: COBINHOOD

Neuromation is a blockchain platform (the “Neuromation Platform”) for the distributed generation of synthetic, labeled datasets for training of deep neural networks. The Neuromation Platform implements the principle of “knowledge mining”, which assumes that the computing power of mining rigs not only supports abstract blockchain cryptographic computing but also serves to solve specific practical problems that have a physical meaning.

ntkNTK charts

Crypto Exchange: COBINHOOD
Category: token
Price at the moment of press: 
$0,7
24h volume: $307 699
Website and Explorer

Substratum (SUB)

Exchange: COBINHOOD

Substratum is creating an open-source foundation for a decentralized web which will provide unrestricted access to content and sharing of information for users across the globe. Its mission is to bring forth the free and fair internet of the future by combining proven technological building blocks with emergent technologies in an innovative and holistic way to help solve many of the problems that plague the modern interne

subSUB charts

Crypto Exchange: COBINHOOD
Category: coin
Price at the moment of press: 
$0,6
Market cap: $148 673 215
Website and Explorer

Metal (MTL)

Exchange: Lykke

The MTL Token is an Ethereum ERC20 Token that uses MetalPay's unique Proof-of-Processed Payments (PoPP) to identify and reward users. Metal is a professional grade mobile application and backend that allows users to manage cryptocurrency and FIAT funds. By creating an easy to use interface, Metal bridges the gap between the existing learning curve to use cryptocurrency and the needs of users to interact with traditional currencies for payment.

mtlMTL charts

Crypto Exchange: Lykke
Category: token
Price at the moment of press: 
$4,24
Market cap: $81 804 561
Website and Explorer

Our team is continuously updating all the most relevant information regarding all newest tokens and coins which are hitting the markets and exchanges in 2018.