Permissioned NFT Sale Scope

Summary of NFT sale options and considerations when planning sale
PoE Permissioned NFT Sale Scope
Proof-of-Existence [PoE] enables NFT sales to leverage the notion that users are only interacting with one account [wallet]. This allows a more nuanced, advanced gamified approach to NFT sales that is not otherwise possible (most “games” reflect additional restrictions that can be bypassed when using multiple wallets).
There are two different avenues for approaching PoE integration:
1] Tiered sales
Tiered sales work on the assumption that both PoE and non-PoE users can participate, and emphasizes different sets of privileges for PoE holders only
2] Permissioned sales.
Permissioned sales are for PoE users ONLY who are verified as unique through biometrics, which are tailored to apply additional restrictions for fairer and more exciting NFT launches.
The following will outline two different mechanisms for specifying sales. The first section is different ways to tier the sales. The second is how to gamify for the permissioned tier. Gamification elements can be applied to the PoE tier ONLY. You can gamify PoE and restrict non-POE. You cannot gamify non-PoE (as folks will just bypass the gamification you put into place).

PoE vs Non-PoE Tiering

There are two main ways to make a distinction between PoE and non-PoE holders.
1] Pre Launch mint window
POE holders can have a start time before non-POE holders, perhaps 24 hours before non-POE holders. Also can be seen as a presale. POE holders have the opportunity to mint at their leisure prior to a public release [Non-PoE] when the masses would potentially challenge the network hence engaging in a ‘gas war’ resulting in potentially large out-of-pocket gas fees.
2] Incentivisation conditions for PoE holders
The second way to do it is to provide a different set of minting terms. POE holders can have a cheaper rate to mint (for any amount of mints). They can have a decaying discount that ultimately normalizes with the non-PoE sale price. A consideration would be a free first mint.

PoE Sale Gamification

Because we can limit PoE holders to participation on just one account, we can put various restrictions on the sale to level the playing field.
The most obvious example demonstrated with the inaugural YCSM mint, is a straight one-mint-per-person limitation. You can ensure that no individual mints more than one of an NFT.
You can also make a ramp-up cost, where each additional NFT mint is more expensive than the last. For example, the first mint is free, and each additional mint is +0.01 ETH. You can have a minting cooldown, where users can mint one NFT every hour until all are sold.
You can do a dutch auction, where the price decreases over time until all are sold.
You could do a cliff, where the first n mints are x price and additional mints are 10x price.

Modifiers Table

Sale type
Description of conditions
POE holders get <time> to mint before global sale starts
Pricing Tiers
POE holders get to acquire <amount> of NFTs at a cheaper price than non-POE holders
POE holders get one free NFT mint each
Limit per-person
POE holders can claim up-to <max> NFTs in a mint
Ramp Up Sale
Each additional mint per person is more expensive than the last
One mint at-a-time with a timelock between additional mints
Dutch Auction
Price decreases over time until all nfts are minted
English Auction
Price increases over time until all nfts are minted
Cliff Pricing
One price up-to <number> of mints. Higher price after.