Pieter Wuille

Name:Pieter "sipa" Wuille
"Not sure what you've given us Hal, but as it is only 256 bit, I doubt it's a private key."

Achievements:

Joined BitcoinTalk December 17, 2010
Began developing February 2011

BIP 9: Version bits with timeout and delay

BIP 30: Duplicate transactions(Supported since Bitcoin Core 0.10)
BIP 32: Hierarchial deterministic wallets
BIP 42: A finite monetary supply for Bitcoin(Draft)
BIP 62: Dealing with malleability(Witdrawn)
BIP 66: Strict DER signatures(Final)
BIP 103: Block size following technological growth(Draft)
BIP 141: Segregated witness(consensus layer)(Supported since Core 13.0)
BIP 143: Transaction signature verification for version 0 witness program

Bip 144 segregated witness(Supported since Core 13.0)
BIP 146 Dealing with signature encoding malleability

- Many hours of hard work and testing
- Created segregated witness for Bitcoin improvement and better security
- Uncovered a bug in OpenSSL

- Founded Blockstream
- Maintainer of the network graphs website https://bitcoin.sipa.be
- Received The Finney freedom prize
Bitcoin version 0.4.0

•       Prepare codebase for Encrypted Keys.
•       Do not use obsolete CPrivKey for passing keys around
•       Bugfix: add autogenerated addresses to address book
•       get rid of mapPubKeys
•       Use CBitcoinAddress instead of string/uint160
•       split off CBase58Data from CBitcoinAddress
•       Fix for small change outputs
•       Bugfix: don't overuse limited ExtractAddress
•       avoid strAddress + validity checks
•       SocketHandler thread can be detached

Bitcoin version 0.5.0

Bitcoin version 0.6
Bitcoin version 0.6.3
Bitcoin Core 0.8
Bitcoin-Qt version 0.8.2

Bitcoin Core 0.8.4

Bitcoin Core 0.9
Bitcoin Core 0.11
Bitcoin Core 0.13.1
Bitcoin Core 0.13.2
Bitcoin Core 0.15.1

Bitcoin Core 0.16 and more
Websites:
https://github.com/sipa
https://gist.github.com/sipa/c65665fc360ca7a176a6
https://diyhpl.us/wiki/transcripts/scalingbitcoin/hong-kong/segregated-witness-and-its-impact-on-scalability/