Graded collectibles

Give Every Graded Card an Unforgeable Digital Twin.

Mint a Script-backed certificate for every PSA-graded slab you sell, trade, or vault. Provable ownership history, not a database anyone can quietly edit.

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Graded trading cards in rigid protective slabs

The context

A graded slab is worth what the provenance behind it is worth. That provenance usually lives in someone's database, which means it is exactly as trustworthy as that party's incentive to keep it honest, and edits leave no trace.

Committing the grading data and every subsequent transfer to Bitcoin gives the record a property a database can't have: changing it after the fact is detectable.

What you get

Hash-committed grading data: Commit the grade, serial and grading metadata so later alteration is detectable.
Chain of custody as transfer history: Each sale or vault movement becomes an on-chain transfer rather than a database row.
Optional resale royalties: Encode resale royalty logic into the transfer rules if your model calls for it.

Where it starts

Describe the certificate. Get something that runs.

Certification is a listed example: The Architect's prompt examples include certification and credential issuance, which is the same shape as a graded-slab certificate.
The verifier comes too: The generated API and Front tabs give you the lookup surface a buyer or vault would use, not just the contract.
Commit the grading data once: What you are encoding is a commitment to grade, serial and metadata, after which any later alteration of that record is detectable.

The Prompt tab listing example contracts including certification and issuance

Inside the IDE

Editor tab: contract source. The generated SX source for the certificate contract, ready to read and modify.

Transactions panel: custody transfer. A transfer of the certificate shown in full before it is signed. It is the chain-of-custody entry as it will be recorded.

Honest limit

This makes the digital record tamper-evident; it doesn't by itself verify the physical card matches the digital token. That binding (photo, serial, vault attestation) is a process you design around it.

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Get the graded collectibles starter kit

A prompt pack and worked example for this use case, so you start from something that already runs rather than a blank editor.

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Frequently asked questions

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No. It makes the digital record tamper-evident. Binding a specific physical slab to its token, via photography, serial capture or a vault attestation, is a process you design around the contract, and it is the part that determines whether the whole system is trustworthy.