What is an NFT whitelist, and what do GTD and FCFS mean?
A whitelist identifies wallets allowed into a mint stage. GTD describes a reserved spot, while FCFS distributes limited capacity in transaction order.
In brief
An whitelist identifies wallets permitted to mint before a public sale or during a separate stage. Allowlist is commonly used for the same purpose.
GTD and FCFS
GTD is commonly used for a mint spot reserved for an eligible wallet. The user may still need to act before a deadline and pay the stated price and network fee.
FCFS means first come, first served. Eligibility permits entry, but the allocation may run out before every listed wallet completes a transaction.
Onchain checks
Some contracts store addresses directly. Others use a Merkle tree and ask for a Merkle proof. OpenZeppelin provides MerkleProof tools for inclusion checks. OpenSea also documents mint stages with separate allowlists, prices and wallet limits.
Risks
Biggest uncertainty Being listed does not promise a free NFT, a successful transaction or profit.
Open mint links through the official account. Check the deadline, price, network fee and signature separately. A legitimate whitelist never needs a private key or .
Conclusion
A whitelist grants entry. GTD describes a reserved spot and FCFS describes transaction order; neither promises profit.
Sources
This article rests on the sources below. Whether each has a permanent copy is stated next to it.
- #1
OpenSea documentation for allowlists and mint stages.
support.opensea.io· no permanent copy· no screenshot
- #2
Merkle proof verification tools.
docs.openzeppelin.com· no permanent copy· no screenshot
Evidence chain: 2 sources
Tweets get deleted, sites go down. Below is whether a durable copy exists for each source.
Sources (2)
- #1
OpenSea documentation for allowlists and mint stages.
support.opensea.io/en/articles/8867054-define-your-allowlists- no durable copy: if the source disappears, this claim loses its basis
- no screenshot captured
- #2
Merkle proof verification tools.
docs.openzeppelin.com/contracts/5.x/api/utils/cryptography- no durable copy: if the source disappears, this claim loses its basis
- no screenshot captured