👾 Soulbound Certification
Irrefutable source of truth. BSC tesnet contracts:
Modified ERC721 Functions:
safeMint
safeMint is a public write function that allows users to mint a new OI-verified SNFT, given that they have registered accordingly. In the case of certified or flagged SNFTs, only the contract owner may call this function. The function increments the _tokenIdCounter and emits a Mint event when the token is minted.
safeMintMultiple
safeMintMultiple is a public function that allows the contract owner to mint multiple OI-verified tokens at once. The function increments the _tokenIdCounter for each token and emits a Mint event for each token that is minted.
revoke AKA burn
revoke AKA burn is a public write function that allows only the contract owner to burn an OI-verified, certified, or flagged token. This function transfers the token from the owner's account to the zero address. It is acceptable to burn any given Soulbound NFT only under the following conditions.
- It was successfully proven through a dispute claim that the given address was falsely flagged.
- The current terms under which the original Soulbound NFT was minted are no longer valid.
- Under the owner's request to de-register.
Unique SNFT Functions
beforeTokenTransfer
The beforeTokenTransfer function is called before any attempt to transfer a token. This function always fails if the sender is not equal to the zero address, which Soulbounds the token to its receiver. If the receiver is equal to the zero address (a burn attempt) the function only passes if it is called by the Open Info Custodian.
Metadata
By using the ERC-721 standard, Soulbound NFTs can also be easily integrated with other applications and platforms that support ERC-721 tokens, expanding their usefulness and potential applications.
The standard metadata JSON for an Open Info Verified, Certified or Flagged Soulbound NFT:
{
"image": "https://vrfd.info/[ADDRESS]",
"external_url": "https://vrfd.info/[ADDRESS]",
"name": "[ADDRESS || ENS-DOMAIN].VRFD",
"description": "[ADDRESS] has been [verified || flagged] by Open-Info, with a Souldbound-NFT.",
"Attributes": [
{
"trait_type": "VRFD?",
"value": "['VRFD 🗸' || 'CRTFD $' || 'FLAGGED X']"
},
{
"trait_type": "upvotes",
"value": "22"
},
{
"trait_type": "downvotes",
"value": "12"
},
{
"trait_type": "Reported By",
"value": "[ADDRESS]"
}
]
}
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