PM me if you'd like, I have over 900 shares still. I'll be selling to best offers, though I'm not sure how long the (direct share) transfer will take.

Maybe the suspense threw off his sleeping schedule.

Is objectTransaction.time a unix timestamp? The Date constructor requires timestamps in milliseconds, so you need to do:

It's not too hard to collect stale block/share rates and propagation time of messages, I'll build that into the inventory system soon.

Right now the MinCen simulation isn't a good model of mincen yet for the following reasons:

• No MTUs
• No merkle blocks
• Nodes don't adjust peering relationships based on which nodes have best connectivity to miners
• Nodes don't enforce transaction verification before relaying shares
• Transactions aren't being created

When those things are added I can get all of the stats you were simulating before.

Supporting DECOR/GHOST is also on my todo list.

Selfish Mining Attack

Demo: http://ebfull.github.io/index-selfish.html
Code: https://github.com/ebfull/simbit/blob/master/sim-selfish.js

simbit was originally created to simulate this attack, and I got some pretty graphs out of it:

MinCen Simulation

Demo: http://ebfull.github.io/
Code: https://github.com/ebfull/simbit/blob/master/sim.js

Sergio's MinCen is an interesting incentive structure for aggregating mining and discouraging forks in the chain, which comes in handy when block intervals are decreased below network propagation rates. It is a quasi-decentralized system in which miners voluntarily delegate to a master (or manager) party whose primary purpose is to select the winning branch and prevent a wasteful race. In theory, if the master attempts to abuse their position, it is in complete view of the network and the master will be abandoned. Some malicious actions can be prevented with fraud proofs.

I've created a bare-bones simulation of this protocol with 1 minute block times, with M=16 share slots. This is just a demonstration; a thorough analysis of MinCen would require much more to be implemented.

simbit is a javascript p2p network simulator which focuses on consensus networks like Bitcoin. It can be executed with Node (in clustered simulations) or in the web browser with visualization. It is a general framework for simulating any number of latency-sensitive networks, strategies and protocols.


Project page: http://github.com/ebfull/simbit

The standard bitcoin simulation includes a working blockchain (with difficulty adjustment, reorgs), maporphans, mempool, UTXO, orphan transactions, inventory system, peer manager and mining simulator.

This is still in alpha. In fact the TCP-like network interface for nodes does not yet account for the size of messages between nodes, and nodes do not yet (but can) simulate computational delay. Also, the network topography is really arbitrary and probably does not represent the real bitcoin network. It also does not come close to perfectly representing the reference client.

I would love feedback, and if you have anything you'd like added or simulated using this framework feel free to bring it up to me. The goal of this framework isn't exactly to be the most efficient possible, but fun and easy to develop with.

We've had months with no dividends before, with no communication. They're busy and they keep their heads low. I have less reason than ever to be concerned about no dividends.

friedcat finally handled a lot of shareholder transfers the last couple days, so I'm expecting a dividend finally today.

All of the ones up for auction at least.

Assuming the trades I'm doing now are done, my auction should be finished.

friedcat can confirm ownership of the shares, it just takes a bit longer to get a reply from him like that.

Still selling at the same price (0.6), let me know if you're interested.

Board members should raise this issue with friedcat.

No dividend yet? Weird...

You can do this with bitcoind using (experimental) support for watchonly wallets.

The only branch I know of that properly functions right now is sipa's watchonly branch:

https://github.com/sipa/bitcoin/tree/watchonly

You're looking for the importaddress command.

I also received 0.00007777 per share. Were these dividends fairly distributed to shareholders? What's going on?

It is used to generate the genesis block, from which all other blocks ultimately derive. Presumably Satoshi has the private key for that txout, but it's unspendable anyway.

https://blockchain.info/block/000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f

https://blockchain.info/tx/4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b

Things moved in a very positive manner last year (20% network hashrate) and friedcat dished out enormous dividends.