Une explication de principe de scalabilité du bitcoin avec les écueils et les solutions possibles.
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Scalability you said ? BdxCoin #7
Transcript
1. Scalability you said ? BdxCoin #7
2. The prophecy Bitcoin will be able to scale to handle as many
transactions as the current payment systems Is it the case today
?
3. Is it a real problem ? Visa handles about 2000 Tx / s
Bitcoin can handle 7 Tx / s NO BULLSHIT
4. Block size Maximum block size : 1 MB about 2000 transactions
Why ? Avoid DoS attacks
5. Block size evolution Average block size 2010-now (source
quandl.com)
6. Wat do ? Remove block size limit ? Increase block size like
difficulty ? -> Protocol update -> Blockchain fork
7. Blockchain size Initial download size : 23+ GB and counting.
Is it really needed ?
8. Blockchain size
9. Blockchain size What do we need ? UTXO : Unspent Transaction
Output Validated by a hash in block headers A few hundred full
blocks in case of a fork
10. Wat do ? Initial download : - Get longest chain headers
from peers - Get UTXO from a peer - Check UTXO against blockchain -
Get a few hundred blocks -> This needs a fork too.
11. Upcoming problems ? CPU performance ? -> new ECDSA lib
to be rolled out Storage ? -> Moore law We need more full nodes
!
12. Thank you Time for a glass of wine ! (or questions maybe ?)
BdxCoin.org @bdxcoin @dqms_output @DjowIsGreat @ChezWam
@tuxication