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◆ SlabForge
Ethereum · Solana · Bitcoin Ordinals

SlabForge

The First Non-Fungible Grading Company

Submit any NFT on Ethereum, Solana, or as a Bitcoin Ordinal. Receive a verifiable on-chain grade backed by cryptographic randomness. Your slab is minted to your wallet, permanently.

How It Works

01
Submit Your NFT
Connect your wallet on Ethereum, Solana, or Bitcoin and prove ownership, no gas, no tricks. Your first grade on each chain is always completely free.
02
Verifiable Randomness
SlabForge uses on-chain randomness (Chainlink VRF on EVM chains, Switchboard VRF on Solana and Bitcoin Ordinals). The result is cryptographically verifiable. Nobody can predict or influence your grade.
03
Your Slab is Minted
Your final grade (1–10) is rolled directly from on-chain randomness. Four sub-grades (Surface, Edges, Corners, Centering) show the breakdown. A slab NFT is minted to your wallet with a unique front, back, and flip animation.
04
Buyback Window
Not happy? Within 24 hours you can burn your slab for a partial refund in ETH or SOL. The refund scales with your grade: 5% at grade 1, up to 90% at grade 10.

Full Transparency

Grading odds are hardcoded in the smart contract and publicly verifiable. Your final grade is rolled directly from on-chain randomness using this table. Higher bribes remove low grades from the pool entirely.

Final Grade Odds
VRF rolls your final grade directly from this table. Four sub-grades (Surface, Edges, Corners, Centering) are generated after to show a breakdown that averages to your grade.
GradeNo BribeLow +$2Med +$5High +$8
105%6%8%10%
97%8%11%17%
811%14%19%22%
714%18%22%21%
615%21%17%16%
518%17%14%14%
49%9%9%-
38%7%--
27%---
16%---
Buyback Refund by Grade
Within 24 hours of minting, burn your slab and receive this percentage of what you paid back in ETH or SOL. Free slabs are burn-only, no refund.
GradeLabelRefund
10Grail90%
9Gem Mint80%
8Near Mint70%
7Excellent60%
6Very Good50%
5Good40%
4Light Played30%
3Played20%
2Poor10%
11) What5%
§ Important Legal-ish Disclaimer

A SlabForge slab is a certificate of grading. It is not the underlying NFT, nor does it grant ownership of it, access to its Discord, rights to its intellectual property, a seat on its yacht, or the right to physically possess whatever animal, punk, or cartoon character it depicts.

Presenting your slab to a project's team and demanding your ape will result in confusion, polite rejection, and possible ridicule. SlabForge accepts no responsibility for the value of your grade, the mood of on-chain randomness on any given day, what you paid for the underlying NFT in 2021, or any existential crisis triggered by receiving a 3.

Trade it. Sell it. Flex it. Just don't try to redeem it.

Ready to grade your NFT?

Available on Ethereum, Solana, and Bitcoin Ordinals. First grade is always free.

Grade Now for Free