Bitcoin Forum
May 20, 2018, 10:46:15 AM
 News: Latest stable version of Bitcoin Core: 0.16.0  [Torrent]. (New!)
 Home Help Search Donate Login Register
 Pages: [1]
 Author Topic: How to know "Current Total Coins"  (Read 477 times)
Skully
Newbie

Offline

Activity: 15
Merit: 0

 February 07, 2014, 09:42:18 PM

How do you determine the current total coins ( for btc or another alt coin )?

I'm trying to do a calculation to understand the current market cap for new coins that come out onto the market.
Advertised sites are not endorsed by the Bitcoin Forum. They may be unsafe, untrustworthy, or illegal in your jurisdiction. Advertise here.
1526813175
Hero Member

Offline

Posts: 1526813175

Ignore
 1526813175

1526813175
 Report to moderator
1526813175
Hero Member

Offline

Posts: 1526813175

Ignore
 1526813175

1526813175
 Report to moderator
1526813175
Hero Member

Offline

Posts: 1526813175

Ignore
 1526813175

1526813175
 Report to moderator
DeathAndTaxes
Donator
Legendary

Offline

Activity: 1218
Merit: 1003

Gerald Davis

 February 07, 2014, 09:55:34 PM

Each coin will have a new coin subsidy schedule.

For Bitcoin it began at 50 BTC for the first 210,000 blocks and then it halves (technically a binary right shift) every 210,000 blocks.  With the blockcount and a a little math you can compute the total # of coins in circulation *.  Keep in mind the block count begins at #0 (genesis block) so when looking at sites which report the block height or block # adjusted by one.

At block #209,999 it would be 210,000 * 50 = 10,500,000 BTC.
At block #210,000 it would be 210,000 * 50 + 1 * 25 = 10,500,025 BTC.
At block #284,681 it would be 210,000 * 50 + 64,682 * 25 = 12,117,050 BTC.

* For Bitcoin (and I assume all copycat clones) this only provides you an estimate because technically a miner can choose to receive a smaller subsidy (but not larger).  So right now your mining pool "could" decide to put a subsidy of zero in instead of 25 BTC.  Of course there is no reason to do so but due to bugs in mining code there are a dozen or so blocks where the subsidy is less than the max allowed.  A pool generating a block with 24.9 (or zero) new coins would be valid, as would 25.0 new coins but 25.1 would not. Also due to a bug in early client version the 50 BTC in the genesis block (#0) is unspendable although it is generally included in the total coin count.
 Pages: [1]