Sign (SIGN) is an omni-chain attestation protocol that enables the creation and verification of secure digital certifications across multiple blockchains, launched as the 16th project in Binance's HODLer Airdrops program in April 2025. It employs encryption and zero-knowledge proofs (ZKPs) to secure identity, ownership, and agreements.
Key details about Sign (SIGN):
Function: Platform for verifying digital certifications and claims across various blockchain networks.
Airdrop on Binance: BNB holders were rewarded with SIGN tokens through the HODLer Airdrops program.
Technology: It’s based on encryption and Zero-Knowledge Proofs to enhance security and privacy.
Price and Market: As of March 28, 2026, the price of SIGN has shown significant fluctuations, including a notable rise of over 40% in a 30-day period according to Binance.
To buy or swap SIGN, the most common pair is SIGN/USDT on the Binance exchange.
Sign (SIGN) is, in simple terms, a digital notary system for the cryptocurrency world.
Here are the key points to understand it easily:
What is it for?: It allows you to create "certificates" or "digital signatures" that prove something is real or that someone is who they say they are, without needing physical papers.
How does it work?: It uses blockchain technology to make that signature impossible to forge. The cool thing about Sign is that it works across multiple networks (omni-chain), not just one.
Privacy: Uses a mathematical system (called Zero-Knowledge) that allows you to prove you have a document or ID without showing your private data.
Relationship with Binance: It became well-known because Binance picked it for their HODLer Airdrops program, giving out SIGN coins to people who held their BNB on the platform.
In summary: It’s a tool to make contracts, identities, and agreements on the internet secure, private, and verifiable by anyone.
Sign (SIGN) as a "Universal Digital Notary" based on blockchain.
What is it in a nutshell?
It’s a platform that allows for creating digital certificates (attestations) that are impossible to forge. This allows anyone or any business to say, "This is true" (like a university degree, an identity, or a contract) and for the rest of the world to verify it instantly without the need for papers.
How does it work? (The technology)
Omni-chain: Sign doesn’t live on just one network (like only Bitcoin or only Ethereum), but can connect its certificates with many different blockchains.
Privacy (ZK-Proofs): Uses mathematical technology that allows you to prove something is true without revealing your private data. For example, you can prove you are over 18 without having to show your exact birthdate.
What is it used for? (Real cases)
Digital Identity: To log into applications without creating a ton of usernames and passwords.
Secure Agreements: Signing digital contracts that are forever recorded on the blockchain.
Authenticity: Verifying that a news article or document wasn’t generated by some malicious AI.
Why is it news on Binance?
Sign has gained a lot of traction recently because it was the 16th project in Binance's HODLer Airdrops program. This means Binance gave away these coins to folks who held their own coin (BNB) as a reward for their loyalty.
"Sign is an attestation (verification) infrastructure that aims to restore trust in the internet, allowing any digital data to be verified securely, privately, and transparently using blockchain technology."
