smart contracts and identity
TRANSCRIPT
tomorrow’stransactionstoday
SmartContracts and identityBlockchain-ID+eID Café,April26th 2016
PascalVanHecke,Innopay
2 SmartContracts and identity,PascalVanHecke,April26th2016.©InnopayBV
InnovationexpertsinPayments,DigitalIdentityandE-Business
• Foundedin2002
• Partners:ShikkoNijland&Douwe Lycklama
• HQinTheNetherlands,Amsterdam
• 20+consultantsplusInternationalnetworkofassociatedexperts
• Threecorepractices:Payments,DigitalIdentityandE-Business
• Strategy,co-creationandtransformation
• GeographicalfocusonEU
• Memberofa.o. EBA,ECPandEPCA
• FoundingmemberofHollandFintech
3 SmartContracts and identity,PascalVanHecke,April26th2016.©InnopayBV
Thethreepracticescontinuouslyprovideclientswiththelatestknowledgeandinsights
DigitalIdentity
E-business• Internetenables services tobereachable viathedigitalchanneland causesbusiness toengageindigitaltransformation
• Innopay helps companies tooffer digitalservicesand provides strategiestosupport theirdigitaltransformation process
• Duetoplace-independent commerce itisbecoming anecessitytoidentify youronline customers
• Innopayworksfor several collaborative trust frameworks and alsohelpsorganisations todealwithonline identification, authentication and verificationprocesses of theircustomers
• Thematuring Internetand theenduringmobile revolutionchange contexts ofcommerce. Businesses andconsumers demand realtimeservices,anyplace anytime
• Innopay supports clientsacross thepayments valuechaintoadapt tonewdemands andexploit theopportunities ofthisnew reality
Payments
Douwe [email protected]+31655711150
HugoLö[email protected]+31624395600
Vincent [email protected]+31642102058
4 SmartContracts and identity,PascalVanHecke,April26th2016.©InnopayBV
Agenda
SmartContracts?
SmartcontractsandEthereum
Ethereum andidentity
5 SmartContracts and identity,PascalVanHecke,April26th2016.©InnopayBV
6 SmartContracts and identity,PascalVanHecke,April26th2016.©InnopayBV
7 SmartContracts and identity,PascalVanHecke,April26th2016.©InnopayBV
8 SmartContracts and identity,PascalVanHecke,April26th2016.©InnopayBV
tomorrow’stransactionstoday
Red sends 1.1 to green
Blue sends 3 to green
Grey sends 1 to red
Blue sends 3 to red
Red sends 1.1 to grey
Red gets 50 for the puzzle!
10 SmartContracts and identity, PascalVanHecke,April26th2016.©InnopayBV
SmartcontractsinBitcoin
• Containsadeliberatelysimplescriptinglanguage• Atransaction=lockingBitcoinanddescribinghowitcanbeunlocked• Examples:
− Multisig:multiplesignaturesareneededtounlock− CheckLocktimeVerify:Bitcoinonlyspendableatsomepointinfuture− ….
11 SmartContracts and identity, PascalVanHecke,April26th2016.©InnopayBV
SmartcontractsinBitcoin
• Containsarelativelysimplescriptinglanguage• Atransaction=lockingBitcoinanddescribinghowitcanbeunlocked• Examples:
− Multisig:multiplesignaturesareneededtounlock− CheckLocktimeVerify:Bitcoinonlyspendableatsomepointinfuture− ….
Altcoin/Metacoin X
More ”opcodes”, more functionality
12 SmartContracts and identity, PascalVanHecke,April26th2016.©InnopayBV
13 SmartContracts and identity, PascalVanHecke,April26th2016.©InnopayBV
Ethereum:anythingisprogrammable
“Classic“blockchains
• Addresses
• Balancewith“native”coin
• Transactions
• Blocks:transactionsbundled
Ethereum:
• Addresses• +datastorage• +code• BalancewithEther• +application-specific tokens
withspecificbehaviour• Transactions• +creationofcontractcode• +callingcontractcode• Blocks:“transactions”• +”newstate”ofentiresystem
14 SmartContracts and identity, PascalVanHecke,April26th2016.©InnopayBV
15 SmartContracts and identity, PascalVanHecke,April26th2016.©InnopayBV
16 SmartContracts and identity, PascalVanHecke,April26th2016.©InnopayBV
17 SmartContracts and identity, PascalVanHecke,April26th2016.©InnopayBV
18 SmartContracts and identity, PascalVanHecke,April26th2016.©InnopayBV
19 SmartContracts and identity, PascalVanHecke,April26th2016.©InnopayBV
20 SmartContracts and identity, PascalVanHecke,April26th2016.©InnopayBV
Slowandprimitive,but…
Promise:
A15-yearoldcandeploybusinesslogicthatis:
• Verifiable• Immutable• Untamperable• Untouchable
21 SmartContracts and identity, PascalVanHecke,April26th2016.©InnopayBV
Smartcontractpattern
1Lockthingofvalueincontract
2Contractcodedeterminesredistribution
3Basedoninformation thatisnotyetknown
22 SmartContracts and identity, PascalVanHecke,April26th2016.©InnopayBV
Smartcontractpattern
1Lockthingofvalueincontract• Nativecrypto• Tokensrepresentingvalue…or
abilities2Contractcodedeterminesredistribution
3Basedoninformation thatisnotyetknown
23 SmartContracts and identity, PascalVanHecke,April26th2016.©InnopayBV
Smartcontractpattern
1Lockthingofvalueincontract• Nativecrypto• Tokensrepresentingvalue…or
abilities2Contractcodedeterminesredistribution
3Basedoninformation thatisnotyetknown• Randomness• Actor• “Oracle”
24 SmartContracts and identity, PascalVanHecke,April26th2016.©InnopayBV
25 SmartContracts and identity, PascalVanHecke,April26th2016.©InnopayBV
26 SmartContracts and identity, PascalVanHecke,April26th2016.©InnopayBV
27 SmartContracts and identity, PascalVanHecke,April26th2016.©InnopayBV
28 SmartContracts and identity, PascalVanHecke,April26th2016.©InnopayBV
29 SmartContracts and identity, PascalVanHecke,April26th2016.©InnopayBV
30 SmartContracts and identity, PascalVanHecke,April26th2016.©InnopayBV
Developers
31 SmartContracts and identity, PascalVanHecke,April26th2016.©InnopayBV
32 SmartContracts and identity, PascalVanHecke,April26th2016.©InnopayBV
33 SmartContracts and identity, PascalVanHecke,April26th2016.©InnopayBV
34 SmartContracts and identity, PascalVanHecke,April26th2016.©InnopayBV
Smartcontractsandidentity
”Proxycontract”
• Actingonbehalfofindividual(…orgroup,groupofcontracts...)
• Controlpolicyisinthecontractitself
• Examples:− Multisig/multifactor− Revokeandrestorepolicy
− compromise,insanity…− Policygovernance
->Roleoftrustedparties!
35 SmartContracts and identity, PascalVanHecke,April26th2016.©InnopayBV
Smartcontractsandidentity
However…
• Flexibility• Nostandardsyet• Everyapplicationinventsitsown
conceptofpermissions,groups,attributes…
36 SmartContracts and identity, PascalVanHecke,April26th2016.©InnopayBV
Uport (notyetreleased)
User-centricidentity
• Cryptographicallytiesattributestoidentifier (proxycontract)
• SigningkeyandAuthenticationkeyaspropertyofaproxycontract
• Attributesaresignedbyidentityproviders (orpeers)
• Attributesaredisclosedtorelyingpartiesviapeer-to-peer protocol(noIDPsurveillance)
37 SmartContracts and identity, PascalVanHecke,April26th2016.©InnopayBV
Uptake
1Research!• Scaling:sharding• Consensusalgo:mining
2Publicorpermissioned• Privacy/Confidentiality• Finality• Accountability
3Adoption?• Uptakeofpublicchainsuncertain• Bizmodelof
permissioned/consortium?
