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1  Alternate cryptocurrencies / Announcements (Altcoins) / [ANN] Tigercoin - TGC | SHA256 with Super Random Blocks | Please Upgrade to V1.1 on: September 06, 2013, 08:17:57 PM

Version 1.1 is released. Please upgrade.

Tigercoin - TGC

TGC is a fork of Bitcoin version 0.8, with addition of super random blocks.

Proof of work with SHA256 is used as in Bitcoin. The following specifications are implemented:
   - Each normal block has 128 coins
   - 45 seconds block time
   - Difficulty retargets every 20 blocks (approximately 15 mins).
   - mining payout will be halved every 3 months (every 172800 blocks)
   - once the payout reaches 1 coin/block, it will stay there to sustain the mining
   - Expected total mined coins will be 47,011,968 coins (not counting the one coin per block inflationary sustaining blocks)
   - 4 confirmations for transaction
   - 50 confirmations for minted blocks
   - Random bonus blocks are (on average):
      - 1 superblock of 512 coins every hour (1/80 chance)
      - 1 superblock of 2048 coins every day (1/1920 chance)

   - The default ports are 15660(Connect) and 15661(RPC).

To support early adopters, in the first 3 days - 5760 blocks, all the payouts (including superblocks) will be doubled.

No Premine.

News and Announcements

- December 18, 2013: Tigercoin listed in Cryptsy:
- September 8, 2013: Switchover to V1.1 successful at block 4001.
- September 8, 2013: So far we have 3 mining pools running
- September 8, 2013: Tigercoin is listed in CoinEx:
- September 7, 2013: Version 1.1 released. This is a mandatory upgrade before block 4000
- September 6, 2013: Tigercoin - TGC launched

Mining Pools

thcst8's p2pool:
see details at

CoinEx Mining Pool:
PPLNS with 5min window

iSpace Mining SHA256 Pool:

Daygle's Mining Pool:

ViMal's Mining Pool:
fee: 1%

amarian12's p2pool:    
cgminer -o stratum+tcp:// -u YourWalletAddress -p password


Windows Client Downloads:!oh8VDYJZ!BoAJcQUZJ1Q75OEDlqZkID85kilcDYTYVOKtFpNpNFk

Source Code Download:

Config File

Use the following addnodes for initially connecting to the network:

Sample config file:


How to Solo Mine

1. Start up tigercoin-qt, wait for it to load, then exit.
2. Put tigercoin.conf (see sample file above) in your c:/users/**yourcomputername**/AppData/Roaming/Tigercoin
3. restart tigercoin-qt, and you should connect and sync.
4. For solo mining, launch cgminer or the mining program you use and begin mining.
      cgminer ex: cgminer.exe -o localhost:15661 -u **yourusername** -p **password** (without **)

2  Other / Beginners & Help / Is USB Erupter ever profitable? on: September 01, 2013, 06:27:41 AM
The price of USB Erupter going down very quickly, and yet at 0.3-0.4 BTC each, shall we ever get the investment back? At the current diff, each USB Erupter can mine about 2.5X10^-4 BTC per day, which means it can get 0.4 BTC in 160 days (or 5+ months). But with BTC diff rapidly going up, I suspect that the investment can never be recovered. Is my computation correct?
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