Bounty

Create a token (like ERC20) that doesn't store balances, but only the merkle root of all data. When token holders want to read balance or send transfers, then they would need to bring proofs. Create a backend (lambda functions) as a small webservice that would track the events in the token contract and provide proofs to who-ever is interested.

Scope

contract architecture from best practices (like openzeppelin)
instead mapping (address => uint256) public balances; implement Sparse Merkle Tree data structure
rewrite all basic functions to work with new data structure
add necessary require statements that appears in regard to new data structure
write tests for all basic cases
write lambda function to give users values for parameters that are required by contract function 'balanceOf'
write lambda function to give users values for parameters that are required by contract functions 'transfer' or 'transferFrom'
lambda functions, when invokes by users through API Gateway, need to track the contract events and store current state of tree (leaves) to DynamoDB

Deliverables

ERC20 contract template based on Sparse Merkle Tree
AWS webservice that tracks contract events and gives users necessary proofs
Gain for the project
ability to create token contracts based on Sparse Merkle Tree
ability to create webservices for custom contracts
Roles

bounty gardener: @johannbarbie / %10 bounty worker: @roleengineer / %65 bounty reviewer: @eshavkun / %25

leapdao / meta

SMT Ethereum Token Prototype #140

Bounty

Scope

Deliverables

Gain for the project

Roles