Overview

Dynamic Oracle Approach

FIO is automatically converted to ETH to cover gas costs

NFT Redemption Approach

The NFT is not actually minted until there is an action on the Ethereum chain where Bob can pay the gas fee

Notes on FIO Domain Expiration as an ETH NFT

• Expiration is not stored on the minted eth NFT

• The oracle will enact actions on the NFT after checking the FIO chain for validity

  • if unwrapped and expired

    • Cannot be placed in escrow

    • Cannot be wrapped

  • If held in escrow and expired

    • Can be released back to the FIO owner

    • Can be renewed on FIO chain

      • Once valid, can be transferred

    • Can not be approved by new owner (when ETH gas is paid)

      • wrapping process is not completed, NFT does not yet exist on ETH chain

  • if wrapped and not expired

    • Can be released from escrow to new owner

The FIO Domain can be wrapped assuming it has not expired or about to expire.

• Do not wrap tokens that will expire in about 2 weeks?

• An FIO domain NFT that has been wrapped on Ethereum chain does not need to be used on the Ethereum chain, so the resolvers used in ENS are not necessary.
  
  

NFTs as tradable assets have images associated with them via a uri string

• The image of the NFT is not pertinent to FIO domains.

• NFTs minted for trade on OpenSea use their own servers to store the image uri

• More universal approach will require an IPFS node

• Can make FIO endpoint available to retrieve string from FIO state.

  • Can be configured by block producers
    

v1/chain/get_nft_image example

POST:
'{“url”:”https://fio.eosrio.io/v1/chain/get_nft_image”}'

RESPONSE:
'{“image”:”https://imgur.com/exampleimage.png”}'

IPFS Url formatting:
'{“image”:”https://{gatewayURL}/ipfs/{content ID}/{optional path to resource}”}'

Oracles

regoracle

Register Oracle.

Registering oracles

• Each Oracle is registered using regoracle action.

Implementation

• New action: regoracle

Request body

Processing

• Request is validated per Exception handling.

• Oracle is added after 7 custodians have registered the same Ethereum public address

Exception handling

Response body

unregoracle

Unregister Oracle.

Implementation

• New action: unregoracle

Request body

Processing

• Oracle is removed after 7 custodians have unregistered the same public address

• oracle_actor is removed

Exception handling

Response body

Example

{
  "status": "OK"
}

Custodians

regcustodian

Register Custodian

Registering oracles

• Each Custodian is registered using regcustodian action.

Implementation

• New action: regcustodian

Request body

Processing

• Request is validated per Exception handling.

• Custodian is added after 7 custodians have registered the same public address

Exception handling

Response body

unregcustodian

Unregister Custodian.

Implementation

• New action: unregcustodian

Request body

Processing

• Custodian is removed after 7 custodians have unregistered the same public address

Exception handling

Response body

Example

{
  "status": "OK"
}