> For the complete documentation index, see [llms.txt](https://www.docs-sts.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://www.docs-sts.com/introduction-to-sts/quickstart.md).

# What is STS (Secure Transfer System)

## STS is a protocol that eliminates the risk of irreversible loss. By creating a confirmation layer for every transaction,we make crypto transfers 100% reversible in case of error. The senderis given the final key, ensuring funds only go where they are intended.

## PROBLEM

**The nature of blockchains means most transactions are final. A single wrong character in an address can lead to the permanent loss of assets. This remains a critical failure point for users, wallets, and exchanges, especially with high-value transfers ranging from $30,000 to $300,000.**

## SOLUTION

**STS adds a mandatory control layer: each transfer is confirmed by the recipient using a one‑time code, and if the code is incorrect or not entered in time, the funds are automatically returned to the sender without changing how the underlying blockchain works.​**

## How It Works: A Private Handshake for Every Transfer.

### **STS adds a simple confirmation step that ensures your funds are safe until the recipient has been verified.**

<figure><img src="/files/qQ4CzDXRTCaoSLoehcFO" alt=""><figcaption></figcaption></figure>

**1 step:**\
The sender enters the recipient'swallet address and transfer amount.

**2 step:**\
STS generates a unique, one-time confirmation code.

**3 step:** \
The sender shares this code with the recipient via a secure external channel.

**4 step:** \
The recipient enters the confirmation code and signs the transaction to claim the funds.

**5 step:** \
The funds are instantly released to the recipient's  wallet.

## Your Built-In Safety Net

### Three core rules ensure that the sender's funds are always protected:

1. **One Attempt Only.** If the confirmation code is entered incorrectly, the transaction is
   \
   immediately cancelled, and the funds are automatically returned to the sender.
2. **Time-Limited Confirmation.** If the code is not entered within 24 hours, the transaction
   \
   automatically reverts, returning the funds to the sender.
3. **Unique Code for Every Transfer.** A new, single-use confirmation code is generated for every
   \
   transaction, ensuring each transfer is independently secured.


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