ECIP 1050: Smart Contract Status Codes

ECIP-1050 S M A RT C O N T R ACT STAT U S C O D E S 🤖 💞 C O M P O S I T I O N A L I T Y , I N T E R O P E R A B I L I T Y , A U T O M AT I O N , M E S S A G I N G , A N D M O R E ⚙ ✨

INTRO B R O O K LY N Z E L E N K A , @ e x p e d e

INTRO B R O O K LY N Z E L E N K A , @ e x p e d e • Cofounder/CTO at Fission — https://fission.codes

INTRO B R O O K LY N Z E L E N K A , @ e x p e d e • Cofounder/CTO at Fission — https://fission.codes • PLT & VM enthusiast

INTRO B R O O K LY N Z E L E N K A , @ e x p e d e • Cofounder/CTO at Fission — https://fission.codes • PLT & VM enthusiast • Prev. ETH Core Dev, now visiting from IPFS-land 🚀

INTRO B R O O K LY N Z E L E N K A , @ e x p e d e • Cofounder/CTO at Fission — https://fission.codes • PLT & VM enthusiast • Prev. ETH Core Dev, now visiting from IPFS-land 🚀 • EIPs • 615: EVM Subroutines & Static Jumps • 902: Token Permissions / Validation • 1066: Standardized Status Codes • 1444: Permissionless On-Chain Translation

INTRO B R O O K LY N Z E L E N K A , @ e x p e d e • Cofounder/CTO at Fission — https://fission.codes • PLT & VM enthusiast • Prev. ETH Core Dev, now visiting from IPFS-land 🚀 • EIPs • 615: EVM Subroutines & Static Jumps • 902: Token Permissions / Validation • 1066: Standardized Status Codes • 1444: Permissionless On-Chain Translation • ECIP 1050

INTRO B I G , H A I RY, AU D A C I O U S G O A L

INTRO B I G , H A I RY, AU D A C I O U S G O A L • Write less code 🕑

INTRO B I G , H A I RY, AU D A C I O U S G O A L • Write less code 🕑 • Have higher confidence 👌

INTRO B I G , H A I RY, AU D A C I O U S G O A L • Write less code 🕑 • Have higher confidence 👌 • Make Ethereum more accessible (

INTRO H T T P → E TC

INTRO H T T P → E TC 🖥 404 💻

INTRO H T T P → E TC 🖥 404 💻 0xC4

INTRO R E AS O N S TO CA R E 🌖

INTRO R E AS O N S TO CA R E 🌖 • Dependency for several ERCs — notably security tokens • Approved to be a primitive in Vyper 🐍 • Flow automation • Interoperability • Deployed contract reuse (safety!) • Open to extension • Highly portable • Developer & user feedback, incl. (nearly) gas-free localization

STRUCTURED CODES

STRUCTURED CODES SO SIMPLE A MACHINE CAN USE IT 😉🤖

STRUCTURED CODES TA S T Y N I B B L E S 🐭

STRUCTURED CODES TA S T Y N I B B L E S 🐭 0x41

STRUCTURED CODES TA S T Y N I B B L E S 🐭 0x41 0100 0001

STRUCTURED CODES TA S T Y N I B B L E S 🐭 0x41 Category 0100 0001

STRUCTURED CODES TA S T Y N I B B L E S 🐭 0x41 Category 0100 0001 Reason

STRUCTURED CODES TA S T Y N I B B L E S 🐭 0x41 Category 0100 0001 Reason 0x0B

STRUCTURED CODES TA S T Y N I B B L E S 🐭 0x41 Category 0100 0001 Reason 0x0B 0000 1011

STRUCTURED CODES TA S T Y N I B B L E S 🐭 0x41 Category 0100 0001 Reason 0x0B 0000 1011 (0x0* General is same as just the reason alone)

STRUCTURED CODES C O D E TA B L E

STRUCTURED CODES C O D E TA B L E 0* 1* 2* 3* 4* 5* 6* 7* 8* 9* A* B* C* D* E* F* 0 1 2 3 4 5 6 7 8 9 A B C D E F

STRUCTURED CODES C O D E TA B L E Category Time Range Auth Agreements Off Chain … 0* 1* 2* 3* 4* 5* 6* 7* 8* 9* A* B* C* D* E* F* 0 1 2 3 4 5 6 7 8 9 A B C D E F

Category STRUCTURED CODES Time C O D E TA B L E Auth Agreements Off Chain … 0* 1* 2* 3* 4* 5* 6* 7* 8* 9* A* B* C* D* E* F* 0 1 Reason 2 3 Fail Ok Accepted/Started Action Required … Range 4 5 6 7 8 9 A B C D E F

Category STRUCTURED CODES Time C O D E TA B L E Range Agreements Off Chain … 0* 1* 2* 3* 4* 5* 6* 7* 8* 9* A* B* C* D* E* F* 0 1 4 5 6 7 8 9 A B C D E F SEARCH / MATCH Reason 2 3 Fail Ok Accepted/Started Action Required … Auth

Category STRUCTURED CODES Time C O D E TA B L E Range Auth Agreements … 0* 1* 2* 3* 4* 5* 6* 7* 8* 9* A* B* C* D* E* F* 0 1 AWA I T I N G 4 5 6 7 8 9 A B C D E F SEARCH / MATCH Reason 2 3 Fail Ok Accepted/Started Action Required … Off Chain

Category STRUCTURED CODES Time C O D E TA B L E Auth Agreements Off Chain … 0* 1* 2* 3* 4* 5* 6* 7* 8* 9* A* B* C* D* E* F* 0 1 0x23 Awaiting Match 2 3 AWA I T I N G 4 5 6 7 8 9 A B C D E F SEARCH / MATCH Reason Fail Ok Accepted/Started Action Required … Range

STRUCTURED CODES HELPER LIBRARY 🛠 npmjs.com/package/fission-codes

STRUCTURED CODES HELPER LIBRARY 🛠 npmjs.com/package/fission-codes Combine (inclusions)

STRUCTURED CODES HELPER LIBRARY 🛠 npmjs.com/package/fission-codes Combine (inclusions) Pull Apart (projections)

STRUCTURED CODES HELPER LIBRARY 🛠 npmjs.com/package/fission-codes Combine (inclusions) Pull Apart (projections) Automatic require with (hardcoded) message*

TOY FLOW

TOY FLOW 💸🧸💰

TOY FLOW N OT R E A DY Y E T

TOY FLOW N OT R E A DY Y E T 💰 💱 🤖

TOY FLOW N OT R E A DY Y E T 💰 💱 buy(💰, 10) ✉ 🤖

TOY FLOW N OT R E A DY Y E T 💰 buyFor(🤖, 10) ✉ 💱 buy(💰, 10) ✉ 🤖

TOY FLOW N OT R E A DY Y E T 💰 buyFor(🤖, 10) 🕚💱 ✉ 💱 buy(💰, 10) ✉ 🤖

TOY FLOW N OT R E A DY Y E T 💰 buyFor(🤖, 10) 🕚💱 ✉ 0x43 I’ll call you back when ready ✉ 💱 buy(💰, 10) ✉ 🤖

TOY FLOW N OT R E A DY Y E T 💰 💱 buy(💰, 10) buyFor(🤖, 10) 🕚💱 ✉ 0x43 I’ll call you back when ready ✉ 🕚💰🤖 ✉ 🤖

TOY FLOW N OT R E A DY Y E T 💰 💱 buy(💰, 10) ✉ buyFor(🤖, 10) 🕚💱 ✉ 0x43 I’ll call you back when ready ✉ 🕚💰🤖 0x43 I’ll call you back when ready ✉ 🤖

TOY FLOW I M PAT I E N C E 💰 🕚💱 💱 🕚💰🤖 🤖

TOY FLOW I M PAT I E N C E 💰 🕚💱 💱 🤖 🕚💰🤖 isDoneYet(💰) ✉

TOY FLOW I M PAT I E N C E 💰 🕚💱 💱 🤖 🕚💰🤖 isDoneYet(💰) ✉ 0x43 I’ll call you back when ready ✉ 💔

TOY FLOW K I C K- O F F 💰 🕚💱 💱 🕚💰🤖🧙 🤖

TOY FLOW K I C K- O F F 💰 openForBiz() ✉ 🕚💱 💱 🕚💰🤖🧙 🤖

TOY FLOW K I C K- O F F 💰 openForBiz() ✉ 🕚💱 0x41 Ready! ✉ 💱 🕚💰🤖🧙 🤖

TOY FLOW K I C K- O F F 💰 openForBiz() ✉ 🕚💱 0x41 💱 Ready! ✉ buyFor([🤖,🧙], 10) ✉ ✉✉✉ 🕚💰🤖🧙 🤖

TOY FLOW K I C K- O F F 💰 openForBiz() ✉ 🕚💱 0x41 💱 Ready! ✉ buyFor([🤖,🧙], 10) ✉ ✉✉✉ (0x31, [🤖,🧙], 10) Agreed & complete ✉ 🕚💰🤖🧙 🤖

TOY FLOW K I C K- O F F 💰 openForBiz() ✉ 🕚💱 0x41 💱 Ready! ✉ 🤖 🕚💰🤖🧙 buyFor([🤖,🧙], 10) ✉ ✉✉✉ (0x31, [🤖,🧙], 10) Agreed & complete ✉ (0x31, 💰, 10) Agreed & complete ✉

TOY FLOW K I C K- O F F 💰 openForBiz() ✉ 🕚💱 0x41 💱 Ready! ✉ 🤖 🕚💰🤖🧙 buyFor([🤖,🧙], 10) ✉ ✉✉✉ (0x31, [🤖,🧙], 10) Agreed & complete ✉ (0x31, 💰, 10) Agreed & complete ✉ 🎉💁 ✉

M O T I V AT I N G M O R E C O N T E X T

M O T I V AT I N G M O R E C O N T E X T 🐘 G R E AT E R T H A N B O O L E A N S 🐁

M O T I V AT I N G M O R E C O N T E X T To make use of a Boolean, you have to know its provenance so that you can know what it means. 👍 👎 CONOR MCBRIDE [VIA HARPER]

M O T I V AT I N G M O R E C O N T E X T ERC-902

M O T I V AT I N G M O R E C O N T E X T LOW C O N T E X T B O O L E A N S

M O T I V AT I N G M O R E C O N T E X T LOW C O N T E X T B O O L E A N S 💰

M O T I V AT I N G M O R E C O N T E X T LOW C O N T E X T B O O L E A N S 💰 ✉ 🤔

M O T I V AT I N G M O R E C O N T E X T LOW C O N T E X T B O O L E A N S ✉ 🤔 💰 ✉ 🤔