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var id = shh.newIdentity();

var filter1 = shh.filter({to: id}, function(err, res) {
  if( err ) {
    console.log("Whisper error:", err);
    // short circuit 
    return;
  }
  
  console.log("Received whisper message");

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Testnet simplifications:

1. Difficulty formula

D(genesisblock) = 2^22 D(block) = D(block.parent) + D(block.parent) / 1024 * (1 if block.timestamp < block.parent.timestamp + 42 else -1)

2. Fees

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POC-7 https://ethereum.etherpad.mozilla.org/14? Latest changes:

---

Stateless contracts: Additional opcode: 0xf4: CALLSTATELESS Calls self, but grabbing the code from the TO argument instead of from one's own address DONE PY,C++, go/Java

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ALTERATIONS FOR SUICIDE

Suicide's semantics are now:

All funds are immediately transferred to the nominated recipient account, but the account itself remains valid. It is tagged for destruction, to be completed simultaneously with all remaining gas being refunded to the origination account (this can safely happen simultaneously since the suicidal account is necessarily a contract account and the transaction originator is necessarily externally controlled, non-contract account).

All accounts become the same type; code/storage is just empty for the non-contract accounts.

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PoC 4

Big Changes

We now make a distinction between state and code. Code is stored as an immutable byte array node in the state tree. Accounts have both a state and code hash. When creating contracts, two byte arrays containing EVM code are given: an initialiser (run once then discarded) and the body (stored in the state tree as mentioned).

Transaction types are distinguished between 

(i) A message call transaction now contains the following fields:

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Testnet simplifications:

1. Difficulty formula

D(genesisblock) = 2^22 D(block) = D(block.parent) + D(block.parent) / 1024 * (1 if block.timestamp < block.parent.timestamp + 42 else -1)

2. Fees

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Function calling and removing deterministic memory:

Memory and stack management

000: stack ptr ->-->-->-+ (points to "stack frame 2")
--- stack frame 1       |
001: "___ret_pos"       |
002: "___p_stack_ptr"   |
003: stack var "a"      |

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func ExampleExecute_ffi() {
	// enable FFI
	vm.EnableFFI()

	cfg := &Config{
		DisableJit: true,
		// create ffi model and functions
		Ffi: vm.Ffi{
			0: func(in []byte) ([]byte, error) {
				reverse := make([]byte, len(in))

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package main

import (
	"fmt"
	"log"
	"os"
	"os/signal"

	"github.com/ethereum/go-ethereum/accounts/contract"
	"github.com/ethereum/go-ethereum/common"

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panic: close of closed channel

goroutine 36182 [running]:
github.com/ethereum/go-ethereum/miner.(*RemoteAgent).Stop(0xc8359d7810)
	/Users/jeffrey/go/src/github.com/ethereum/go-ethereum/miner/remote_agent.go:80 +0x30
github.com/ethereum/go-ethereum/miner.(*worker).unregister(0xc820297ea0, 0x6f21230, 0xc8359d7810)
	/Users/jeffrey/go/src/github.com/ethereum/go-ethereum/miner/worker.go:219 +0xb3
github.com/ethereum/go-ethereum/miner.(*Miner).Unregister(0xc82029d3e0, 0x6f21230, 0xc8359d7810)
	/Users/jeffrey/go/src/github.com/ethereum/go-ethereum/miner/miner.go:140 +0x39
github.com/ethereum/go-ethereum/xeth.(*XEth).Stop(0xc8226376c0)