Signable NFT is a new concept developed to add real value to your digital property
Electronic signature
Signature in the Blockchain
NFT SmartSign
Electronic signature
A usual e-signature allows to confirm authorship and is implemented with cryptography methods of asymmetric encryption. This ensures protection of a digital object from being copied and counterfeited. An NFT object signature in the blockchain is implemented in a similar way but enriched with significant advantages.
Signature in the Blockchain
In the TON blockchain, the user's wallet is already provided with natural encryption mechanism and right now allows to log in to third-party services. Asymmetric encryption is built into the very blockchain, therefore no need to constantly have a memory stick with an electronic signature on hand. It is enough just to have a wallet app installed on your mobile device.
NFT SmartSign
SmartSign is a TON blockchain-based solution that provides your NFTs with digital signatures (single or multiple). The signature is also stored in the blockchain and reliably linked to the owner who registered it. This solution offers a great potential, from a simple increase in the collection value of an object to a reliable anti-scam verification. Initially a blank and virtual NFT object can acquire a real and soaring value due to time and new signatures of celebrities.

Use Cases

Numerous use cases of signable NFTs


Have your NFTs signed by industry icons.


Sign your NFT yourself as a gift to your friends.


Influencer? Donate to charity by signing an NFT in favor of what you hold dear.


Receive NFT invitations to events signed by speakers and organizers.


Buy and sell NFTs on our marketplace. Just like in the real world, an autographed NFT can worth a hundred times more than a blank one.

How it works

Who can sign an NFT?

Any NFT, provided that its contract is compatible with the NFT standard in the TON blockchain, can be signed thanks to the mechanism described in White Paper. A user registered on our web portal can both sign other users' NFTs and accept other users' signatures on his/her own NFTs. To reliably verify a user as a signatory, it is enough to non-custodially bind a user’s wallet and login of any social network to the web portal.

Incoming signing requests and their verification

A user-signatory sends a request to sign someone's NFT (so-called pull scheme of signing, see White Paper). Upon request, there created a special smart contract – a signature entity in the TON blockchain. On the next stage, a special transaction from the NFT owner to the signature contract going through the NFT contract verifies the signature. Thus, in order to get someone's signature on your NFT, it is necessary first to wait until his/her action and then confirm the signature.

Outgoing signing requests and their verification

In another signing scheme, the NFT owner through the web portal opens it for someone to sign (the so-called pull scheme of signing, see White Paper). Upon request, there created a special smart contract – a signature entity in the TON blockchain. After that, any transaction with a comment from the signatory for this smart contract will verify his/her signature on the given object. Thus, in order to get someone's signature on your NFT, it is necessary first to consciously open it for him/her to sign and then wait until his/her consent.

Each signature is stored in a dedicated smart contract

Why shouldn't a simple transaction from the signatory's wallet to an NFT address be considered a signature? Firstly, the transaction history of any smart contract can be spammed with microtransactions, so it will be rather difficult to detect a real signature. Secondly, the object to-sign itself should include a lot of additional information like the date, the linked social net account, perhaps a graphical representation of the signature, etc. Finally, it is conceptually more correct and formal to store each signature in a dedicated smart contract.


The signature is immutable and stored on the blockchain just like an NFT itself
The signature is verifiable and uniquely associated with its owner
NFT acquires a real collection value and significance for the NFT owner
NFT acts as a VIP access to events allowing to get signatures from organizers and guests
The signature provides additional anti-scam verification of a collectible object
Part of the global NFT-as-a-Service concept


Our plans for the coming year
2022 Q2
Idea, market research
2022 Q3
NFT signature architecture proposal
2022 Q4
TON Foundation Grant Approval
2022 Q4
NFT signature implementation
2022 Q4
Project presentation, community building
2023 Q1
NFT signing web portal
2023 Q2
Mint and presale of the flagship collection of the project
2023 Q2
Custom Marketplace
2023 Q3
Integrations & Partnership programs


White Paper

You can read more about the digital objects signing concept in the TON blockchain in the main document of the project.
Read more


Join our community in social networks and stay tuned for latest new.


We are IT professionals who have concentrated their efforts in the field of blockchain technologies. We have 15+ years’ experience in all areas of IT development; from full stack to artificial intelligence and, finally, to TON blockchain development. Our goal is to make the blockchain customary and more useful for people by bringing the Web3 era nearer. We believe that NFTs can and should provide real benefits, therefore our team facilitates their horizontal mass adoption.
Serge Polyanskikh
Smart contracts, High-Level Management
Community Building, Business Integration, High-Level Management
Michael Krasnov
System Design
Project & Domain Architecture, Full Stack Development
Vladimir Lebedev
Blockchain Consultant
Smart contracts, Security
IT Consultant
Domain Architecture, Business Logic
Alexander Vibe
Graphic Design
Frontend Design & Art, NFTs
Artsem Valozhynets