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Background

We should declare the initial set of outOOB (Out-ofOf-the-box Box) Iroha Special Instructions for Hyperledger Iroha 2.0.0 release.

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•  Nikita Puzankov define a list of initial ISIs
•  武宮誠 and Yuriy Vinogradov review it and add suggestions/comments
•  Nikita Puzankov conduct final meeting and write down agreement on the final set

Problem

Iroha whitepaper, current implementation and users' expectations are differ different in terms of out-of-the-box Iroha Special Instructions set.

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Split out-of-the-box instructions into the following categories:

• Domain related
  •  Register/
  Unregister<Id, Identifiable>
  • Unregister<Identifiable>
  •  Mint/Burn<Id, Value>
  •  Transfer<Id, Value, Id>
• Math
  • Integer
    •  Add/Substract
    <Value
    • <EvaluatesTo<u32>,
    Value>
    • EvaluatesTo<u32>>
    •  Multiply/
    Divide<Value, Value>
  • RaiseTo<Value, Value>
  • Mod<Value, Value>
• Compositions
  • Sequence<Vec<Instruction>>
  • Pair<Instruction, Instruction>
  • If<Instruction, Instruction, Instruction>
  • Not<Instruction>
• Queries
  • Execute<Query>

...

• • • Divide<EvaluatesTo<u32>, EvaluatesTo<u32>>
    •  RaiseTo<EvaluatesTo<u32>, EvaluatesTo<u32>>
    •  Mod<EvaluatesTo<u32>, EvaluatesTo<u32>>
  • Comparison:
    •  Equate<Value, Value>
    •  Greater/Less<EvaluatesTo<u32>, EvaluatesTo<u32>>
  • Bool
    •  Not<EvaluatesTo<bool>>
    •  And/Or<EvaluatesTo<bool>, EvaluatesTo<bool>>
• Compositions
  •  Sequence<Vec<Instruction>>
  •  Pair<Instruction, Instruction>
  •  If<EvaluatesTo<bool>, Instruction, Option<Instruction>>
• Vectors
  •  Contains<EvaluatesTo<Vec<Value>>, EvaluatesTo<Value>>
  •  ContainsAny/ContainsAll<EvaluatesTo<Vec<Value>>, EvaluatesTo<Vec<Value>>>
• Variables
  •  Where<Value, BTreeMap<String, Value>>
  •  ContextValue<String>
• Queries
  •  Execute<Query>
• Misc
  •  Fail<String>

Provide a set of possible domain-related instructions:

• Register/Unregister
  •  Register or unregister Domain in Peer
  •  Register or unregister Account in Domain
  •  Register or unregister Asset Definition in Domain
  •  Register or unregister Peer Id in Peer 
  •  Register or unregister Signatory in Account
• Mint
  •  Mint or burn value to or from an Asset 
• Fees
  •  Register or unregister TransactionFee (e.g., fixed, percentage, DEX-swapped)
    

Provide a set of tools for DeFi:

• Register DEX
  
  •  Register or unregister DEX (DEXManager) in Domain
• Register Liquidity Source
  •  Register or unregister XYK Pool in DEX
    
  •  Register or unregister Order Book in DEX
• Set liquidity fees
  •  Register or unregister LiquidityFee (e.g., buy back and burn, pool share, etc.)
    

Provide a set of tools for Digital Identity (https://ieeexplore.ieee.org/abstract/document/8377927/):

• W3C-DIDs
  •  Register or unregister DID in Account
    
  •  Register or unregister VerifiableCredential in Account (https://www.w3.org/TR/vc-data-model/)

Alternatives 

• Do not have categories and generic instructions using a plain set of instructions like "AddDomain, RegisterAccount" - as cons we can point out naming and extensibility problems
• Do not have granularity and differences between register, mint, add - as cons we can point out different business-related meanings for similar actions and to a wide set of options in one bucket

Concerns 

• Too A too big or too small set of out-of-the-box instructions can be hard to maintain or not sufficient for users needs
• Iroha 1 users can struggle from the new naming

Assumptions - document any assumption that you made

• We did not made make a final decision about "Iroha Modules" related instructions (DEX, Bridge, Permissions, etc.) and their inclusion into out-of-the-box set yet

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• Set will be incomplete from the users' perspective `[5;2]`
• We missed some categories `[2;7]`

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• https://github.com/hyperledger/iroha/blob/iroha2-dev/docs/source/iroha_2_whitepaper.md
• Iroha Special Instructions DSL
• Re: Triggers