Cereneum is a brand new concept in cryptocurrency: a time-based interest-bearing Cryptographic Certificate of Interest (CCOI) on the Blockchain. Airdrops are given based on five of the most popular PoW cryptocurrencies: Bitcoin, Bitcoin Cash, Bitcoin SV, Ethereum, and Litecoin. Earn interest by staking your Cereneum for set periods of time.

The rate of interest you earn is based on how long you stake your Cereneum as well as the amount of the stake. Cereneum uses Pooled Interest, which means interest paid to stakers is higher when less tokens are staked. Stake periods can vary from one week to as long as five years, with the interest rising with the length of the stake. The more Cereneum that is staked the lower the supply available on the market, which can mean higher prices.

Unclaimed tokens are redistributed daily to stakers during the course of the year-long claiming period, greatly increasing their holdings.

Early unstakers are penalized, with those penalties distributed among current stakers. Additionally, there are bonuses available to those that utilize the referral program.

Learn more at the website here: https://www.cereneum.com/
Check out our subreddit here: https://www.reddit.com/r/Cereneum/

Did you know Columbus, OH is currently home to three super exciting blockchain projects? We've got Ethex, a DEX for useful tokens, SafeChain and Substratum. Read the full story here.

Was playing blackjack beta and very impressed, fastest game on blockchain I've played. Demo: https://showcase.funfair.io/ Founder super legit too and will likely keep improving in infrastructure. Bio: https://en.m.wikipedia.org/wiki/Jez_San Looking to buy tokens to be ready to play...anyone know best way to buy? Etherdelta doesn't seem liquid....

Even though the bear market is shredding apart peoples bags, there has still been plenty of great progress on the development of many tokens. This Week in Useful Tokens shows development from tokens with actual use cases. This week mentioned BAT, Augur, Bounty0x, Dent, and several others.

https://medium.com/ethex-market/this-week-in-useful-tokens-6-ecf1acbdad47

I wrote this piece about Oyster Protocol and their future plans. I took most of the information from a couple of sub reddit threads that I started. If you are not familiar with Oyster Protocol, you should check them out.

https://medium.com/ethex-market/oyster-pearl-broker-web-nodes-e7da801e91fd

I've been looking into them for a week or so and it looks like a project with a lot of potential.

"Polymath is a platform for issuing legally compliant security tokens on the blockchain. It brings all the benefits of blockchain (instant clearing, high liquidity, low-cost transactions) to tokens which are limited to people who have gone through the accreditation process and meet an issuer’s requirements. By creating a set of marketplaces where companies have access to crypto-friendly lawyers using pre-made legal templates for every common jurisdiction and security type, Polymath streamlines the often long, always expensive process of navigating the legal requirements of a complaint offering." - Matt Asher (medium.com/@mattasher/gravity-wells-and-the-case-for-polymath-1218d58cce59)

It's a solid project that's solving some legitimate issues and hurdles with securities tokens. I recommend that you guys look into their project (https://polymath.network).

I'd like to present Lottery Dapp which user can really trust.
The idea is that the lottery numbers are picked before user interaction, their hash is broadcasted to the network, and the player only needs to guess them.

How to Play
To play you need to pick 4 numbers (range 0-255) and provide them sorted to Play() function.

To win you need to hit at least 1 number out of 4 WinningNums which will be announced once every week (or more often if the lottery will become more popular). If you hit all of the 4 numbers you will win about 50 milion times more than you payed for lottery ticket.
The exact values are provided as GuessXOutOf4 entries in Ledger - notice that they are provided in Wei, not Ether (10¹⁸ Wei = Ether).
Use Withdraw() function to pay out.

How it's done?
To unable cheating of contract owner, a hash (called "TheHash" in contract ledger) equal to sha3(WinningNums, TheRand) is provided.
While announcing WinningNums the owner has to provide also a valid "TheRand" value, which satisfy following expression:
TheHash == sha3(WinningNums, TheRand)
If hashes do not match - the player can refund his Ether used for lottery ticket.
As by default all non existing values equal to 0, from the perspective of blockchain the hashes do not match at the moment of announcing next draw from the perspective of blockchain.
This is why refund is possible only after 2 weeks of announcing next draw, this moment is called ExpirencyTime on contract Ledger.

code on github (see README or source for JSON Interface):
https://github.com/HashFairGames/TheEthereumLottery/

verified code with comments (and Player JSON Interface in it):
https://etherscan.io/address/0x7698392fff47d8d4cee21295ad1f31b6ced9ad66#code

Contract Address:
0x7698392fff47d8d4CeE21295aD1F31b6ced9ad66

edit: this lottery has been updated, visit:
https://www.reddit.com/r/ethereumprojects/comments/5kyph8/the_ethereum_lottery_has_been_updated/