Overview

FIO Attestations is a new FIO Chain functionality that evolved out of and further refines Verified FIO Address and FIO Identity concepts. It enables an Attester to attach an Attestation to a FIO Crypto Handle on the FIO Chain. This document describes the required FIO Chain modifications, which will be detailed in a FIO Improvement Proposal (FIP) as well as proposed got-to-market strategy.

Attester

An Attester can be the FIO Crypto Handle owner (self attestation) or any other FIO Crypto Handle (3rd-party attestation) as long as it was previously authorized by the owner of the FIO Crypto Handle receiving the attestation (Attestee).

Attestation

Attestation can be any statement following a common standard, which would be published in a FIP akin to token/chain code standard in FIP-15. This will allow for easy expansion of types of attestations without having to modify the FIO Chain.

Example

type	Description	data
twitter_handle	Twitter handle belonging to the owner of the FIO Crypto Handle.	Twitter handle without @ sign
email_address	Email address belonging to the owner of the FIO Crypto Handle.	Valid email address
verified_pub_address	Public address which was verified with a signature of a corresponding private key.	JSON including: chain_code token_code nonce signature signature
avatar	Link to image representing FIO Crypto Handle avatar	URL

Chain functionality

attest

Records attestation on FIO Chain

{
	"attestee_fio_address": "bob@crypto",
	"attester_fio_address": "alice@crypto",
	"type": "twitter_handle",
	"data": "bob",
	"max_fee": 1000000000,
	"actor": "aftyershcu22"
}

allow_attester

Records permission of FIO Crypto Handle to receive Attestations from a specific Attester.

{
	"attestee_fio_address": "bob@crypto",
	"attester_fio_address": "alice@crypto",
	"max_fee": 1000000000,
	"actor": "aftyershcu22"
}

disallow_attester

Records revocation of permission of FIO Crypto Handle to receive Attestations from a specific Attester.

{
	"attestee_fio_address": "bob@crypto",
	"attester_fio_address": "alice@crypto",
	"max_fee": 1000000000,
	"actor": "aftyershcu22"
}

get_attestations

Request

{
	"fio_address": "bob@crypto",
	"type": "*",
	"limit": 1000,
	"offset": 0
}

Response

{
	"attestations": [
		{
			"type": "twitter_handle",
			"data": "bob",
			"attester_fio_address": "alice@crypto",
			"time_stamp": "2020-09-11T18:30:56"
		},
		{
			"type": "email_address",
			"data": "bob@gmail.com",
			"attester_fio_address": "alice@crypto",
			"time_stamp": "2020-09-11T18:30:56"
		},
		{
			"type": "verified_pub_address",
			"data": {
				"chain_code": "ETH",
				"token_code": "ETH",
				"pub_address": "0x9361ee0e658cc75474df019c58cfbc7d400e65b2",
				"nonce": "ghs66557s878a98h",
				"signature": "d73bd2484a758edc2af4ef1a8708899589766febd17f667414fc736ebe6dcdcd2318cc385cdbdcaf75ad275a9fe858a19a3db2cda9d3e2fcf6a170e67e32a0b01b"
			},
			"attester_fio_address": "alice@crypto",
			"time_stamp": "2020-09-11T18:30:56"
		}
	],
	"more": 0
}

Go-to-market strategy

cryptobadge.art

A brand new website, cryptobadge.art, will be set-up. It will allow users to mint a Crypto Badge NFT which will reflect the attestations they have attached to their FIO Crypto Handle.

High-level functionality

Register a free FIO crypto handle.
Add attestations to their FIO Crypto Handle.
Mint an NFT, which will contain an auto generated art representing the attestations they have added.

Crypto Badge NFT

The basis for the NFT will be the amount of crypto held in the verified public addresses