Archive for the ‘Crypto Coins’ Category

Do you know that there are some crypto coins that are doing airdrops to owners of Bitcoin? This means that if you are holding BTC in a wallet that allows you to sign messages (local or online one) you can get free money in the form of crypto coins. Below are some of these coins that send to you an amount of their tokens based on how much Bitcoin you have in your wallet, there could be some more, so if you know of some other one that is missing please point to it in the comments below. A word of warning though, you need to be careful with such coins and more specifically what they ask you for in the form of confirmation you are the owner of a given BTC wallet. Signing a message or doing a micro transaction from a Bitcoin wallet is fine as confirmation, but if they ask for a private key or wallet file or some sensitive data like that, then just avoid them!

Bitcore (BTX)
Bitcore made a Snapshot of the Bitcoin Network at Blockheight 463604 and captured every Wallet with a Balance bigger than 0.01 BTC, all wallets containing BTC at that point can claim free BTX coins by signing a message from your wallet (exchanges are not supported). Furthermore after you claim your free coins if your wallet has at least 10 BTX you will receive a 3% bonus payment on a weekly basis.

Byteball (GBYTE)
With Bytecall for every 16 BTC you receive 1 GB (1 gigabyte = 1 billion bytes), furthermore for every 5 GB you receive additional 1 GB. To prove your Bitcoin wallet balances you need to install the Byteball wallet and chat with the Transition Bot (you find it in the Bot Store in the wallet). The bot will help you link your Bitcoin and Byteball addresses by making a micropayment or signing a message. The next (8th) airdrop round is scheduled for the full moon of August (Aug 7, 2017 at 18:10 UTC).

Stellar Lumens (XLM)
The current round of XLM giveaway will be for up to 16 BILLION Lumens to Bitcoin holders or 16% of the initial Lumens. On June 27th, 2017 the next airdrop of Lumens will be made available to any Bitcoin holder who wants them, including those that received Lumens during the first giveaway round. Lumens will be available for exchanges that support the giveaway as well as for users with their own Bitcoin wallets. The snapshot of the Bitcoin blockchain will be taken on June 26, 2017 and the Lumen distribution will be held on the next day with 974.957961 XLM per Bitcoin owned in wallet. Participating exchanges for the moment include: Kraken, BTC38, Deribit, Yuanbao, NaoBTC and Bit-Z.

Do you remember how last year AMD Radeon R9 280X GPUs started dropping in terms of mining hashrate for Ethereum due to the growing DAG file size? Well, it seems that we are in for the same thing happening with the Radeon RX400/RX500 series of GPUs with 4/8GB VRAM in the next couple of months. We are currently at DAG epoch #129, but in the next 30-35 or so DAG epochs we are going to be seeing gradual drop in hashrate resulting in up to about 30% decrease from the current hashrate on the Radeon RX400/RX500 series of GPUs. It seems that other more powerful GPUs such as R9 290(x)/390(x) as well as Nvidia Pascal GPUs with more video memory (6GB/8GB+) will not be affected or the drop in performance will be much smaller to a level considered pretty much insignificant compared to what will happen with AMD’s Polaris GPUs.

You can easily check what will happen with your existing GPU mining hardware and if it will be affected in terms of performance and how much by adding the option -benchmark 130 to the Claymore ETH miner. Change the number 130 (the next Ethereum DAG epoch) to the DAG epoch you want to test with such as 140, 150, 160 and see how your hashrate will change or if it will change. The Ethash DAG changes every 30000 blocks which is roughly every 4-5 days and with Ethereum this is called a DAG epoch, so every few days we move to the next DAG epoch. As DAG epochs move further on they also grow in size and put more stress to the video cards that are being used for mining and as a result there is also some performance drop observed over time. The more powerful the GPUs is and the more video memory it has, the more likely it is to be able to handle better long term mining Ethereum.

Following the announcement from earlier this month about an upcoming HODL hardfork, the coin has successfully hardforked at block 257000 and is now an interesting option for miners. Do note however that HOdlcoin (HODL) can be mined only with a processor, so this coin is for CPU miners. Prior to this hardfork all mined coins were automatically locked in a deposit for 1 year and you had to wait for that period to finis in order to get access to them, but after the successful hardfork you can mine and not have the coins automatically deposited for a year anymore. All previously mined coins prior the hardfork will still be locked for 1 year deposit, before they become available for use, so only new coins that you can mine now will be available immediately!

If you want to have a local HODL wallet make sure you have the latest one – HOdlcoin Core wallet version 3.0. There is only one HOdlcoin Mining Pool available for now, the fastest CPU miner for the coin is the Hodlminer Optimized Optiminer fork that you can use to mine on the pool. You can also use the built-in solo mining functionality of the wallet, but with the high network hashrate this might not be the best idea. HOdlcoin is currently being traded on Coinexchange, though if it manages to earn back enough interest from miners and users it might appear on other exchanges soon.

For more details you can check the official Bitcointalk thread about HODL…


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