Pre-Sale Smart Contract Development on Solana (SPL) with an Admin Panel and Integration

Job ID: 39143739

Budget: $3,000 – $5,000 USD

Brief Description:

We are looking for an experienced developer to create a Pre-Sale smart contract on the Solana blockchain (SPL standard). The contract should facilitate a three-stage token sale with a fixed price, handle transferring/burning unsold tokens, and distribute purchased tokens with a lock-up period.

The solution should allow for external auditing (security checks) and include integration of the final product into our website.

Candidate Requirements:

Strong proficiency in Solana (Rust, Anchor, or another framework) and a solid understanding of SPL tokens.
Experience in developing and testing similar pre-sale contracts.
Willingness to provide code samples or links to previous projects.

full:

Pre-sale Technical Specifications (TS):
1. Total token supply: 10,000,000,000 SOUL tokens.
2. Allocation for pre-sale: 30% of the total token supply goes to the Pre Sale.
3. Number of stages: The pre-sale is conducted in 3 stages.
4. Tokens per stage: Exactly 1,000,000,000 tokens are allocated for each stage.
5. Stage duration: Each stage lasts exactly one month.
6. Token price:
o The initial token price is $0.005.
o At each new stage, the price increases by 40%.
7. Early sell-out rule: If the tokens for a given stage are sold out before the end of that stage, the sale for that stage closes immediately. The next stage then opens according to the scheduled start date.
8. Unsold tokens carry-over:
o If a stage ends (after one month) and there are unsold tokens remaining, the leftover amount is carried over to the next stage.
o Example: If 300,000,000 tokens remain unsold at the end of Stage 1, then Stage 2 will offer 1,300,000,000 tokens in total (the standard 1,000,000,000 plus the 300,000,000 carried over).
9. Burning unsold tokens: If, after all three stages end, there are any unsold tokens left, they are burned.
10. Blockchain network: Solana (SOL).
11. Token standard: SPL.
12. Accepted payment currencies: SOL, USDT, USDC.
13. Fixed stage price and exchange rates: The token price at each stage is always fixed in USD terms. If the payment is made in a currency other than USDT (e.g., SOL or USDC), the number of SOUL tokens purchased is calculated according to the real-time exchange rate of the payment currency at the moment of purchase.
14. Token lock-up period:
o 50% of purchased tokens unlock 6 months after the TGE (Token Generation Event).
o The remaining 50% unlock at a rate of 10% each month thereafter.
15. Minimum purchase amount: Equivalent to 50 USDT.
16. Immediate distribution: After purchase, the SOUL tokens are immediately credited to the buyer’s wallet (with the lock-up schedule enforced).
17. Admin panel capabilities:
o Start/pause the pre-sale.
o Modify stage dates.
o Withdraw collected funds to another wallet.
18. Event logging:
а) event TokensPurchased;
b) event StageOpened; event StageClosed;
c) event TokensCarriedOver;
d) event TokensBurned;
e) event FundsWithdrawn;


• Documentation requirements:
• Description of the main contract functions (brief guidelines for developers and testers).
• Explanation of parameters (e.g., stages, price, how to call contract functions).
• Information on how to interact with the contract (via web interface, console, etc.).
• Testing: Perform tests and provide information on test results.
• External audit capability: The contract must be developed with the possibility of an external security audit.
• Integration: Final solution integration into our website.
Related categories: Software Development Rust