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separating the examples for events, decluttering.
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@dhruvmalik007
dhruvmalik007 committed Oct 28, 2022
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Showing 1 changed file with 19 additions and 15 deletions.
34 changes: 19 additions & 15 deletions EIPS/eip-3475.md
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Expand Up @@ -260,47 +260,48 @@ function isApprovedFor(address _owner, address _operator) external view returns
* @notice Issue MUST trigger when Bonds are issued. This SHOULD not include zero value Issuing.
* @dev This SHOULD not include zero value issuing.
* @dev Issue MUST be triggered when the operator (i.e Bank address) contract issues bonds to the given entity.
* eg: emit Issue(_operator, 0x2d03B6C79B75eE7aB35298878D05fe36DC1fE8Ef,[IERC3475.Transaction(1,14,500)]);
* issue by address(operator) 500 DBIT-USD Bond(nonce14,class 0) to address 0x2d03B6C79B75eE7aB35298878D05fe36DC1fE8Ef.
*/
event Issue(address indexed _operator, address indexed _to, Transaction[] _transactions);
// eg:
emit Issue(_operator, 0x2d03B6C79B75eE7aB35298878D05fe36DC1fE8Ef,[IERC3475.Transaction(1,14,500)]);
// issue by address(operator) 500 DBIT-USD Bond(nonce14,class 0) to address 0x2d03B6C79B75eE7aB35298878D05fe36DC1fE8Ef.
/**
* Redeem
* @notice Redeem MUST trigger when Bonds are redeemed. This SHOULD not include zero value redemption.
*e.g: emit Redeem(0x2d03B6C79B75eE7aB35298878D05fe36DC1fE8Ef,0x492Af743654549b12b1B807a9E0e8F397E44236E,[IERC3475.Transaction(1,14,500)]);
* emit event when 5000 bonds of class 1, nonce 14 owned by address 0x492Af743654549b12b1B807a9E0e8F397E44236E are being redeemed by 0x2d03B6C79B75eE7aB35298878D05fe36DC1fE8Ef.
*/
event Redeem(address indexed _operator, address indexed _from, uint256 classId, uint256 nonceId, uint256 _amount);
//e.g:
emit Redeem(0x2d03B6C79B75eE7aB35298878D05fe36DC1fE8Ef,0x492Af743654549b12b1B807a9E0e8F397E44236E,[IERC3475.Transaction(1,14,500)]);
//emit event when 5000 bonds of class 1, nonce 14 owned by address 0x492Af743654549b12b1B807a9E0e8F397E44236E are being redeemed by 0x2d03B6C79B75eE7aB35298878D05fe36DC1fE8Ef.
/**
* Burn.
* @dev `Burn` MUST trigger when the bonds are being redeemed via staking (or being invalidated) by the bank contract.
* @dev `Burn` MUST trigger when Bonds are burned. This SHOULD not include zero value burning.
* e.g : emit Burn(0x2d03B6C79B75eE7aB35298878D05fe36DC1fE8Ef,0x492Af743654549b12b1B807a9E0e8F397E44236E,[IERC3475.Transaction(1,14,500)]);
* emits event when 5000 bonds of owner 0x492Af743654549b12b1B807a9E0e8F397E44236E of type (class 1, nonce 14) are burned by operator 0x2d03B6C79B75eE7aB35298878D05fe36DC1fE8Ef.
*/
emit Burn(0x2d03B6C79B75eE7aB35298878D05fe36DC1fE8Ef,0x492Af743654549b12b1B807a9E0e8F397E44236E,[IERC3475.Transaction(1,14,500)]);
//emits event when 5000 bonds of owner 0x492Af743654549b12b1B807a9E0e8F397E44236E of type (class 1, nonce 14) are burned by operator 0x2d03B6C79B75eE7aB35298878D05fe36DC1fE8Ef.
event burn(address _operator, address _owner, Transaction[] _transactions);
/**
* Transfer
* @dev its emitted when the bond is transferred by address(operator) from owner address(_from) to address(_to) with the bonds transferred, whose params are defined by _transactions struct array.
* @dev Transfer MUST trigger when Bonds are transferred. This SHOULD not include zero value transfers.
* @dev Transfer event with the _from `0x0` MUST not create this event(use `event Issued` instead).
* e.g emit Transfer(0x2d03B6C79B75eE7aB35298878D05fe36DC1fE8Ef, 0x492Af743654549b12b1B807a9E0e8F397E44236E, _to, [IERC3475.Transaction(1,14,500)]);
* transfer by address(_operator) amount 500 DBIT-USD bonds with (Class 1 and Nonce 14) from 0x2d03B6C79B75eE7aB35298878D05fe36DC1fE8Ef, to address(_to).
*/
emit Transfer(0x2d03B6C79B75eE7aB35298878D05fe36DC1fE8Ef, 0x492Af743654549b12b1B807a9E0e8F397E44236E, _to, [IERC3475.Transaction(1,14,500)]);
// transfer by address(_operator) amount 500 DBIT-USD bonds with (Class 1 and Nonce 14) from 0x2d03B6C79B75eE7aB35298878D05fe36DC1fE8Ef, to address(_to).
event Transfer(address indexed _operator, address indexed _from, address indexed _to, Transaction[] _transactions);
/**
* ApprovalFor
* @dev its emitted when address(_owner) approves the address(_operator) to transfer his bonds.
* @notice Approval MUST trigger when bond holders are approving an _operator. This SHOULD not include zero value approval.
* eg: emit ApprovalFor(0x2d03B6C79B75eE7aB35298878D05fe36DC1fE8Ef, 0x492Af743654549b12b1B807a9E0e8F397E44236E);
* this means 0x2d03B6C79B75eE7aB35298878D05fe36DC1fE8Ef gives 0x492Af743654549b12b1B807a9E0e8F397E44236E access permission for transfer of its bonds.
*/
emit ApprovalFor(0x2d03B6C79B75eE7aB35298878D05fe36DC1fE8Ef, 0x492Af743654549b12b1B807a9E0e8F397E44236E);
// this means 0x2d03B6C79B75eE7aB35298878D05fe36DC1fE8Ef gives 0x492Af743654549b12b1B807a9E0e8F397E44236E access permission for transfer of its bonds.
event ApprovalFor(address indexed _owner, address indexed _operator, bool _approved);
```

Expand Down Expand Up @@ -385,7 +386,10 @@ The `nonceId` is the nonce id of the given bond class. This param is for distinc
The `_amount` is the amount of the bond for which the spender is approved.


**AMM optimization**: One of the most obvious use cases of this EIP is the multilayered pool. The early version of AMM uses a separate smart contract and an [EIP-20](./eip-20.md) LP token to manage a pair. By doing so, the overall liquidity inside of one pool is significantly reduced and thus generates unnecessary gas spent and slippage. Using this EIP standard, one can build a big liquidity pool with all the pairs inside (thanks to the presence of the data structures consisting of the liquidity corresponding to the given class and nonce of bonds). Thus by knowing the class and nonce of the bonds, the liquidity can be represented as the percentage of a given token pair for the owner of the bond in the given pool. Effectively, the [EIP-20](./eip-20.md) LP token (defined by a unique smart contract in the pool factory contract) is aggregated into a single bond and consolidated into a single pool.

**AMM optimization**:

One of the most obvious use cases of this EIP is the multilayered pool. The early version of AMM uses a separate smart contract and an [EIP-20](./eip-20.md) LP token to manage a pair. By doing so, the overall liquidity inside of one pool is significantly reduced and thus generates unnecessary gas spent and slippage. Using this EIP standard, one can build a big liquidity pool with all the pairs inside (thanks to the presence of the data structures consisting of the liquidity corresponding to the given class and nonce of bonds). Thus by knowing the class and nonce of the bonds, the liquidity can be represented as the percentage of a given token pair for the owner of the bond in the given pool. Effectively, the [EIP-20](./eip-20.md) LP token (defined by a unique smart contract in the pool factory contract) is aggregated into a single bond and consolidated into a single pool.

- The reason behind the standard's name (abstract storage bond) is its ability to store all the specifications (metadata/values and transaction as defined in the following sections) without needing external storage on-chain/off-chain.

Expand All @@ -412,7 +416,7 @@ Test-case for the minimal reference implementation is [here](../assets/eip-3475/
- [Interface](../assets/eip-3475/interfaces/IERC3475.sol).

- [Basic Example](../assets/eip-3475/ERC3475.sol).
- This demonstration shows only minimalist implementation.
- This demonstration shows only minimalist implementation.

## Security Considerations

Expand Down

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