[en]
main-title = Bitcoin & cryptocurrencies
slides-origin.innerHTML = That presentation was first done for <a href="http://www.devoxx.fr/">Devoxx Paris 2014</a> <small>(<a href="https://github.com/paulgreg/bitcoin-cryptocurrencies/releases/tag/devoxx-2014">original slides</a>)</small>, updated and completed for an <a href="http://www.epita.fr/">EPITA</a> conference then for <a href="http://www.brownbaglunch.fr/"><abbr title="Brown Bag Lunch">BBL</abbr></a>.
about-title = Who am I ?
about-function = Web Developer
about-what.innerHTML = <img src="pictures/mappy-logo.png" class="mappy"><br><a href="https://fr.mappy.com/">maps</a>, <a href="https://fr.mappy.com/itineraire">itineraries</a>, <a href="https://en.mappy.com/#/720/M1/THome/N-397.03335,1,2.29203,48.8608/Z15/">immersive views</a> <small>(in <a href="http://techblog.mappy.com/vues-360-en-webgl.html">webGL</a>)</small>, <a href="https://fr.mappy.com/poi/5190c34184ae2d329f8f47ed">&gt; 5 500 000 <abbr title="Point Of Interest">POI</abbr></a>
about-visit.innerHTML = &gt; 1 000 000 visits per day
poll-title = Poll
poll-who-know-btc = Who knows about Bitcoin ?
poll-who-know-other = About other crypto-currencies ?
poll-who-own = Who owns some ?
poll-who-have-mined = Who mined them ?
poll-who-is-expert = Who is expert ?
disclaimer-title = Disclaimer
disclaimer-p = I’m interested in technical part of cryptocurrencies, not in the economy.
toc-title=Table of content
motivation-title = Motivation
motivation-comic1.src = pictures/CommitStrip-en-1.gif
motivation-comic2.src = pictures/CommitStrip-en-2.gif
motivation-comic3.src = pictures/CommitStrip-en-3.gif
intro-title = A few key points
cryptocurrency-title = Cryptocurrency
cryptocurrency-def.innerHTML = A cryptocurrency is a <strong>peer-to-peer</strong>, <strong>decentralized</strong>, digital currency whose implementation relies on the principles of cryptography to <strong>validate the transactions</strong> and <strong>generation of the currency</strong> itself.
bitcoin-1 = a crypto-currency,
bitcoin-2 = a protocol,
bitcoin-3 = a payment system via a network of clients.
crypto-title = Basic cryptography
crypto-symmetric-cipher-title = Symetric cipher
crypto-asymmetric-cipher-title = Asymmetric cipher
crypto-hash-title = Hash functions
crypto-signature-title = Digital signature
transaction-title=Transaction ?
p2p-title = Peer-to-peer, decentralized
proof-of-work-title = Proof-of-work
proof-of-work-hashcash-title = Proof-of-work : hashcash
proof-of-work-hashcash-img.src=pictures/hashcash-en.png
proof-of-work-desc1.innerHTML = Adam Back, Britsh cryptographer, invented <a href="https://en.wikipedia.org/wiki/Hashcash">hashcash</a> in 97 to avoid SPAM. Hashcash is based on a challenge to resolve.
proof-of-work-desc2.innerHTML = The challenge : increment a value in order to find a hash &lt; value (difficulty)
proof-of-work-currency-title = Proof-of-work : bitcoin, litecoin
proof-of-work-difficulty-input = Difficulty :
proof-of-work-bitcoin = Bitcoin : based on SHA-256 (computation intensive)
proof-of-work-litecoin = Litecoin : based on scrypt (memory intensive)
proof-of-work-difficulty = Difficulty re-evaluated each 2016 blocks
blockchain-title=Blockchain
blockchain.number = Proof
blockchain.hash = Hash
blockgenesis.genesis = Genesis
confirmation-title=Confirmations
mining-title = Mining
coins-generation-title = Coins introduction
coins-generation-1.innerHTML=50 <i class="icon-bitcoin"></i> / 10 minutes for 4 years <small>(→2012)</small>,
coins-generation-2.innerHTML=then 25 <i class="icon-bitcoin"></i> / 10 minutes <small>(→2016)</small>, then 12.5 <small>(→2020)</small>, etc
coins-generation-3=Who earns that money ?
coins-generation-4=To one of the miners, retributed by putting transactions together inside next block.
coins-generation-5=And can I too earn some Bitcoin ?
coins-generation-6=Yes but race with all others miners.
coins-generation-7=Why does a miner "wins" ?
coins-generation-8=The first who brings a valid proof of work.
coins-generation-img.src=pictures/block-en.png
history-title = A little of history
history-2008.innerHTML = <span>2008 : </span><a href="http://bitcoin.org/bitcoin.pdf">White paper</a> by Satoshi Nakamoto, <a href="http://sourceforge.net/projects/bitcoin/">SourceForge</a>
history-2009.innerHTML = <span>2009 : </span>firsts transactions
history-2010.innerHTML = <span>2010 : </span>pizza sold for 10,000 <i class="icon-bitcoin"></i>
history-2011.innerHTML = <span>2011 : Litecoin</span>
history-2013.innerHTML = <span>2013 : </span><a href="https://blockchain.info/charts/market-cap">Market cap</a> reaches $1 billion
history-2014.innerHTML = <span>2014 : </span>MtGox bankrupted
history-2015.innerHTML = <span>2015 : Ethereum</span>
history-2017.innerHTML = <span>2017 : Bitcoin Cash, Bitcoin Gold</span>
history-2018.innerHTML = <span>2018 : </span>market cap is ~$150 billions - <a href="http://historyofbitcoin.org/">historyofbitcoin.org</a>
prices-title = Price evolution in US $
transactions-title = Transaction evolution
transaction-network = Network
transaction-miner = Miner
transaction-block = Block
transaction-input = input :
transaction-output = output :
transaction-signed = signed :
transaction-hash = hash
transaction-nonce = number
transaction-desc1 = 1. Alice & Bob launch their Bitcoin client
transaction-desc2 = 2. A public / private keypair is generated
transaction-desc3 = 3. Clients connecting to other peers (bitcoin network)
transaction-desc4 = 4. All clients download the blockchain
transaction-desc5 = 5. Alice & Bob fetch blocks and check them
transaction-desc6.innerHTML = 6. Alice discover 10 <i class="icon-bitcoin"></i>
transaction-desc7.innerHTML = 7. Alice want to send 1 <i class="icon-bitcoin"></i> to Bob
transaction-desc8.innerHTML = 8. And includes a fee of 0.01 <i class="icon-bitcoin"></i>
transaction-desc9 = 9. She’s sending transaction to other peers
transaction-desc10 = 10. Miner will then fetch current transaction
transaction-desc11 = 11. ...and are searching a good number
transaction-desc12 = 12. First miner who find a good number send the bloc to the network
transaction-desc13 = 13. All client get the block and send it to other peers
transaction-desc14 = 14. Alice, Bob & miner fetch that block and check it
transaction-desc15 = 15. and update their Bitcoin account
address-title=Where an address comes from ?
address-keypair = Private and public keypair
address-picture.src = pictures/address-generation-en.png
clients-title = Clients types
clients-type-1.innerHTML = Full client
clients-type-2.innerHTML = Light client
clients-type-3.innerHTML = Minimal client <strong class="bad">⚠</strong>
clients-type-4.innerHTML = Hardware wallet
security-title = Security
security-concerns-title=Security concerns
practical-title = In practice
feature-title = Features
feature-1 = Open protocol and Open Source, driven by majority,
feature-2 = Decentralized, without authority,
feature-3 = Free access for everybody,
feature-4 = Low fees (initially...),
feature-5 = Transactions are validated within 10 minutes,
feature-6 = No way to revert a transaction.
realtime-title = Bitcoin : a few indicators
merchants-title.innerHTML=I have <i class="icon-bitcoin"></i>, now what ?
get-btc-title = Get bitcoins
get-btc-mine = by mining them,
get-btc-bepaid.innerHTML = by being paid in <i class="icon-bitcoin"></i>,
get-btc-exchange.innerHTML = via exchanges (<a href="https://bitcoin-central.net/">Paymium</a> <small>(ex bitcoin-central)</small>, <a href="https://www.kraken.com/">kraken.com</a>...) but you need :
get-btc-exchange-admin = send papers,
get-btc-exchange-transfert-euro = transfert $ or €,
get-btc-exchange-offer = make an offer,
get-btc-exchange-incoming.innerHTML = if the offer meets demand, you’ve got <i class="icon-bitcoin"></i>
get-btc-exchange-transfert-btc.innerHTML = transfert those <i class="icon-bitcoin"></i> !
get-btc-local.innerHTML = by exchanging locally (<a href="https://localbitcoins.com/">localbitcoins.com</a>) or ...
maison-bitcoin-title = La Maison du Bitcoin
division-or = or
malware-title = Malware is coming
malware-cryptolocker.innerHTML = Ransomwares : <a href="https://en.wikipedia.org/wiki/Cryptolocker">CryptoLocker</a> (2013), <a href="https://en.wikipedia.org/wiki/Petya_(malware)">Petya</a> (2016), <a href="https://en.wikipedia.org/wiki/WannaCry">WannaCry</a> &amp; <a href="https://en.wikipedia.org/wiki/Petya_(malware)">NotPetya</a> (2017)
malware-wallet = Protect (encrypt) your wallet (wallet.dat)
malware-404s = On my web server :
attack51-title = 51% attack
attack51-caption.innerHTML = The Ghash.io mining pool gain around <a href="http://www.cryptocoinsnews.com/news/bitcoin-mining-pool-ghash-io-ddos-ed-response-51-attack/2014/06/15">51% of the bitcoin network the 13th of june 2014</a> for a few hours
mtgox-title = MtGox history
mtgox-history-2010.innerHTML = 2010 : Bitcoin exchange,
mtgox-history-2011.innerHTML = 2011 : Sold to Mark Karpelès,
mtgox-history-2011-2.innerHTML = 2011 : 60,000 accounts hacked, transerts blocked, <a href="https://blockchain.info/tx/3a1b9e330d32fef1ee42f8e86420d2be978bbe0dc5862f17da9027cf9e11f8c4">transfert of 442000 <i class="icon-bitcoin"></i></a> to prove they own the money,
mtgox-history-2013.innerHTML = 2013 : 70 % of worldwide exchanges, <abbr title="Distributed Deny Of Service">DDOS</abbr> attacks,
mtgox-history-2014.innerHTML = 2014 : All transfert blocked because they lost tracks of their <i class="icon-bitcoin"></i>...
mtgox-malleabilty= The “transaction malleability” flaw
mtgox-transaction.labelfrom = From
mtgox-transaction.labelto = To
mtgox-transaction.labelamount = Amount
other-cryptocurrencies-title=Others crypto-currencies
miner-type-title=Miner types
miner-type-img.src=pictures/miners-en.png
scalability-title = Scalability
scalability-tps.innerHTML = ~ 2000 <abbr title="transaction per second">TPS</abbr> for <img src="pictures/visa.svg" class="visa"> versus ~0.8 <abbr title="transaction per second">TPS</abbr> for <i class="icon-bitcoin"></i>
scalability-cpu.innerHTML = <strong class="ok">CPU</strong> : ~100 Mb/s for <code>RIPEMD-160</code>, <code>SHA256</code> &amp; <code>ECDSA</code> about 8000 <abbr title="transaction per second">TPS</abbr> on a i7
scalability-network.innerHTML = <strong class="ok">Network</strong> : ~0.5 Kb/transaction, about ~8 Mb/s for 2000 TPS
scalability-storage.innerHTML = <strong class="mixed">Storage</strong> : ~73 Gb <small>(june 2016)</small> but prune may come
script-1.innerHTML = The scripting language is stack-based and similar to <a href="https://en.wikipedia.org/wiki/Forth_%28programming_language%29">Forth</a>,
script-2.innerHTML = A transaction is made of 2 scripts (input and output),
script-3.innerHTML = Condition check then action,
script-4.innerHTML = Allow contracts, multi-party signatures...
more-title = A little more
dev-title=Integration in your project
dev-validation=address validation
dev-miner=Web miner
dev-blockchain=Blockchain inspection
dev-tools=Tools
based-on-bitcoin-title=Based on Bitcoin...
resources-title=Resources
qa-title=Questions & Answers
qa-presentation=That presentation is available on :
demo-title=Demo
conclusion-title = Conclusion
conclusion-1.innerHTML=Bitcoin in 5 years ? Nobody knows but it doesn’t matter
conclusion-2.innerHTML=But another cryptocurrency : surely !
conclusion-3.innerHTML=Blockchain : a &laquo; révolution &raquo; <small>like Web, email, P2P...</small>
conclusion-4.innerHTML=To the masses
conclusion-5.innerHTML=Innovation without authorisation
assets-title=Assets references
assets-wallpaper.innerHTML=<a href="https://secure.flickr.com/photos/stevegarfield/11209276924/in/photostream/">Coins by Steve Garfield</a>
assets-commitstrip.innerHTML=<a href="http://www.commitstrip.com/fr/2014/02/28/about-bitcoins/">Comic CommitStrip</a> on Bitcoins
assets-icons.innerHTML=Icons from <a href="http://piotrkwiatkowski.co.uk">Piotr Kwiatkowski</a>, flags by <a href="http://www.gosquared.com/">GoSquared</a>
assets-key-icon.innerHTML=Key by Lorenzo Baldini from The Noun Project
assets-shower.innerHTML=<a href="https://github.com/shower/shower/">Shower</a> as slide system
assets-webl10n.innerHTML=<a href="https://github.com/fabi1cazenave/webL10n">webl10n</a> as translation system
appendix-title = Appendix