jyap808

Paycoin Proof of Work analysis

Here are some numbers I ran for Paycoin for the Proof of Work period. It is now 100% Proof of Stake.

Many coins were mined by GAW Miners (private?) mining pool: https://chainz.cryptoid.info/xpy/address.dws?PRQBLgPak9i2xWsdFWSMQfWEA8yWqieTKo.htm (Click on show all transactions)

GAW Miners mined 1161 Proof of Work blocks with reward 49 XPY = Total 56,889 XPY

jyap808

I've read that many people believe that Zetacoin has a predominantly "1 year" mining schedule. I believe the Announcement is very misleading in this regards. Here are some facts.

The Zetacoin ANN states :

• Block reward: 1000 ZET, halving every 80640 blocks (about 1 month), not dropping below 1 ZET (inflationary)
• Total coin supply: 160 million ZET + small yearly inflation
• 160 million coins will be mined in around first year

Below are time stamps, blocks at change in mining reward and coin supply at those blocks.

jyap808

Swap should take place on the Instance Storage (ephemeral) disk and not an EBS device. Swapping will cause a lot of IO and will increase cost on EBS. EBS is also slower than the Instance Store and the Instance Store comes free with the EC2 Instance.

It will usually be mounted to /mnt but if not run

sudo mount /dev/xvda2 /mnt

To then create a swap file on this device do the following for a 4GB swapfile

jyap808

Verifying myself: My Bitcoin username is +jyap. https://onename.io/jyap

jyap808

sudo dd if=/dev/zero of=/mnt/myswapfile bs=1M count=1024
ls -l /mnt/myswapfile
sudo chmod 600 /mnt/myswapfile
sudo mkswap /mnt/myswapfile
sudo swapon /mnt/myswapfile

sudo vi /etc/fstab

jyap808

$ codesign -dvvv Bitcoin-Qt.app
Executable=/Applications/Bitcoin-Qt.app/Contents/MacOS/Bitcoin-Qt
Identifier=org.bitcoinfoundation.Bitcoin-Qt
Format=bundle with Mach-O thin (x86_64)
CodeDirectory v=20100 size=153121 flags=0x0(none) hashes=7649+3 location=embedded
Hash type=sha1 size=20
CDHash=68b2974f209336f9b90a2435768a0ebac4d3b945
Signature size=8544
Authority=Developer ID Application: BITCOIN FOUNDATION, INC., THE

jyap808

Example is the coin Zimstake and this commit:

https://github.com/CryptoGir/Zimstake/commit/5cc7c8179bfe2fed239180e9e4f4f7acb50522b9#diff-c33d3ce1a2a004536aaf1b90f6458900

Using Block 16996

mapCheckpoints:

+        ( 16996,uint256("0x408084c7299169168ab371ff0e049c6bba09d03636c1618b924444260cc32edd"))

jyap808

$ diff -u /etc/nginx/nginx.conf{.ORIG,}
--- /etc/nginx/nginx.conf.ORIG  2014-04-13 04:15:51.907316500 +0000
+++ /etc/nginx/nginx.conf       2014-04-13 05:02:22.807316500 +0000
@@ -30,7 +30,9 @@
        # Logging Settings
        ##
 
-       access_log /var/log/nginx/access.log;
+ log_format vhosts '$host $remote_addr - $remote_user [$time_local] "$request" $status $body_bytes_sent "$http_referer" "$http_user_agent"';

jyap808

In the MongoDB configuration file add the following line:

smallfiles=true

The safety shut off MongoDB and remove the journal files.

Full procedure:

jyap808

Keybase proof

I hereby claim:

• I am jyap808 on github.
• I am jyap (https://keybase.io/jyap) on keybase.
• I have a public key whose fingerprint is 685B 5017 6420 1448 6543 0475 C3BD 0552 7F66 1F0A

To claim this, I am signing this object: