Ethereum · ERC-20 · Fixed supply

A cryptocurrency on Ethereum

Astra Bitcoin (ABTC) is a cryptocurrency with a fixed supply of 2,250,000 and a renounced contract. It is not a share, pays no dividend, and carries no claim on any company, asset or revenue. Its price is set entirely by the market.

Get ABTC What it is
Contract renounced Supply fixed at 2,250,000 Verifiable on Etherscan
The Astra Bitcoin ABTC coin

What ABTC is

A cryptocurrency, in the same sense as Bitcoin

ABTC is a digital token that exists on the Ethereum blockchain. It can be held and transferred between wallets. That is the whole of what it is and the whole of what it does.

It is not a share, not a bond, not a loan, not a unit in a fund, and not a deposit. Holding it gives you no ownership of any company, no dividend, no interest, no profit share, no voting right, and no claim on the assets or revenue of anyone. Nobody is obliged to buy it from you, redeem it, or exchange it for anything.

No equity, no dividend

ABTC confers no ownership, no share of profit, no interest and no entitlement of any kind against any company.

No buy back, no burn

There is no buy back programme, no burn programme, and no mechanism that reduces supply or supports the price.

Fixed supply

2,250,000 ABTC exist. The contract is renounced, so no further tokens can be created and no party can alter it.

No price representation

Astra states no listing price, target, forecast or expected value, and gives no undertaking that any market or price will ever exist.

On chain

Everything here can be checked without us

These are the only figures we publish, because these are the only ones a stranger can confirm for themselves in under a minute.

0 Total supply, fixed
0x0…0000 Token owner — renounced
$0 Sale price per ABTC, set in the contract
Token
0x8C45bC48a451F48cca403ff2DDba2dA0EA68c404
Network
Ethereum Mainnet
Total supply
2,250,000 ABTC
Token owner
0x0000000000000000000000000000000000000000 — renounced
Sale contract
0x7F4875c4a43daF0c31E411c6317C2ca265DDf8A0
View token on Etherscan Read the sale contract
Two contracts, deliberately set up in opposite ways. The token contract that holds your balance is renounced: its supply can never be increased, your tokens can never be frozen, and its code cannot be replaced. The sale contract keeps an owner on purpose, because a renounced sale contract would seal every payment inside it forever and remove the emergency brake. See exactly what each one can and cannot do, with tests you can repeat yourself.

Get ABTC

Four steps, no account, no sign-up

ABTC is issued straight from a contract on Ethereum to the wallet that calls it. There is nothing to register for and no personal details to hand over.

  1. 1

    Open a self-custody wallet

    MetaMask, Rabby, Trust or any WalletConnect wallet, set to Ethereum Mainnet. You need the wallet itself, not an exchange account.

  2. 2

    Hold ETH, USDT or USDC

    Plus a little extra ETH for gas. Gas is paid to the Ethereum network, never to us.

  3. 3

    Enter an amount

    The panel asks the sale contract directly and shows the exact quantity of ABTC it will issue. No estimate.

  4. 4

    Confirm in your wallet

    ETH is a single confirmation. USDT and USDC take two: an approval, then the purchase.

  5. Do not send from an exchange. The contract issues ABTC to whichever address calls it. An exchange withdrawal is sent from the exchange's own address, so the ABTC would not reach you and cannot be recovered.
Buy ABTC $3.00 per ABTC · fixed in the contract
ETH
Enter an amount to see the exact quantity the contract will issue.

or Send ETH directly, no connection

Sale contract
0x7F4875c4a43daF0c31E411c6317C2ca265DDf8A0
Minimums
0.001 ETH · $1.00 USDT/USDC
Supply
2,250,000 ABTC, fixed

No wallet connection needed

Send ETH directly and receive ABTC automatically

Don't want to connect your wallet, or not sure how? You don't have to. Send ETH from your own wallet to the contract address below and the contract issues ABTC straight back to the address it came from.

  1. 1

    Open your self-custody wallet

    MetaMask, Trust Wallet, Rabby, or a hardware wallet such as Ledger. Make sure you are on Ethereum Mainnet.

  2. 2

    Copy the contract address

    Use the copy button below. Check the first four and last four characters match before you send.

  3. 3

    Send ETH to that address

    An ordinary transfer, exactly as you would to any address. Minimum 0.001 ETH. Keep a little extra ETH for gas and set the gas limit to at least 150,000.

  4. 4

    ABTC arrives in the same transaction

    The contract prices your ETH through the Chainlink oracle and issues ABTC immediately to the sending address. There is no second step.

Sale contract · Ethereum Mainnet 0x7F4875c4a43daF0c31E411c6317C2ca265DDf8A0

Minimum 0.001 ETH · gas limit 150,000+

Add ABTC to your wallet

ABTC will not appear in your wallet on its own. One click adds it.

From your own wallet only, never from an exchange. The contract issues ABTC to whichever address sent the ETH. An exchange withdrawal is sent from the exchange's own address, so the ABTC would be credited there and not to you, and it cannot be recovered. The sending wallet must be one whose keys you hold.

Security

Which contract protects you, and which one has to stay controlled

ABTC uses two separate contracts and they are deliberately set up in opposite ways. Understanding the difference is the single most useful thing you can know before buying.

Renounced

The token contract is renounced, and that is the one that matters

This is the contract that holds your balance. Its owner was set to the zero address, which no human being controls, so every privileged function in it is now permanently unreachable. Nobody can reach them again — not us, not a future employee, not anyone who buys the company.

Nobody can create more ABTC

The supply is fixed at 2,250,000 forever. The mint function exists in the code but reverts for every possible caller, so your share cannot be diluted.

Nobody can freeze your tokens

pause and unpause both revert. There is no mechanism by which your balance can be locked, and no way to add one.

Nobody can block your address

The contract has no blacklist, denylist or allowlist of any kind. Your address cannot be singled out.

No fee or tax on transfers

There is no fee logic in the contract. Send 100 ABTC and 100 ABTC arrives.

The code itself cannot be replaced

The token is an EIP-1167 minimal clone. Its implementation address is baked into the bytecode rather than stored in an upgradeable slot, and both EIP-1967 proxy slots are empty. There is no admin and no upgrade path.

Token contract 0x8C45bC48a451F48cca403ff2DDba2dA0EA68c404

Controlled by design

The sale contract keeps its owner, on purpose

People sometimes assume that renouncing every contract is safer. For a sale contract the opposite is true: renouncing it would do real harm, and some of that harm would fall on buyers.

  • The money would be locked in forever. withdrawETH and withdrawERC20 are owner-only. Renounce the contract and every payment ever made to it becomes permanently unreachable — not just profit, but funds that might need to be returned.
  • Unsold ABTC would be stranded. withdrawUnsoldTokens is owner-only too. Renouncing would trap the remaining tokens in the contract with no way to recover them.
  • A bug could never be stopped. pause is the emergency brake. If a flaw or an exploit were found, a renounced contract could not be halted and would keep running until it was drained.
  • A broken price feed would break the sale. The contract rejects any Chainlink answer older than one hour. If the feed stalls, ETH purchases revert and the sale stops working. toggleOracleMode and updateManualEthRate exist so it can keep operating through an oracle outage.

A renounced sale contract is not a safer sale contract. It is an abandoned one, with everybody’s money sealed inside it.

Check it yourself

What you are still trusting, and how to check it yourself

Being straight about it: the manual ETH rate is not bounded in the code. It only rejects zero. So a buyer paying in ETH is relying on the owner setting an honest rate. You do not have to take that on trust, and here is how to avoid it entirely.

  1. Read the quote from the contract before you send. Call quoteETH on the sale contract with the exact amount you intend to send. It returns the precise number of ABTC you will receive. The purchase panel on this site does that automatically and displays that figure, not an estimate.
  2. Or pay in USDT or USDC and skip the oracle entirely. Stablecoin purchases use a fixed contract constant of 3.00 USD per ABTC. No price feed, no manual rate, nothing an owner can influence.

Verification tests

We ran the dangerous calls against live mainnet state to see whether the network would actually reject them, rather than only reading the code and assuming. Every test below can be repeated by anyone using Etherscan’s Read Contract tab.

23/23 checks passed · block 25823585 · 24 August 2026

Token contract — privileged functions must be unreachable

mint() called by an arbitrary address ✓ Reverts
pause() called by an arbitrary address ✓ Reverts
unpause() called by an arbitrary address ✓ Reverts
transferOwnership() called by an arbitrary address ✓ Reverts
renounceOwnership() called by an arbitrary address ✓ Reverts
setTokenURI() called by an arbitrary address ✓ Reverts

Token contract — state

owner() ✓ 0x0000…0000, renounced
paused() ✓ false
totalSupply() ✓ 2,250,000

Token contract — upgrade path

Contract type ✓ EIP-1167 clone, 45 bytes
EIP-1967 implementation slot ✓ Empty
EIP-1967 admin slot ✓ Empty
Implementation deployed and verified ✓ Yes, 5,651 bytes

Token contract — source review

Blacklist or denylist ✓ None present
Transfer fee or tax logic ✓ None present
Maximum transaction or wallet cap ✓ None present
selfdestruct ✓ None present
delegatecall ✓ None present

Sale contract — owner powers exist and are properly gated

owner() ✓ A live address, not renounced
pause() called by a non-owner ✓ Reverts
withdrawETH() called by a non-owner ✓ Reverts
updateManualEthRate() called by a non-owner ✓ Reverts
toggleOracleMode() called by a non-owner ✓ Reverts
To be clear about what this is: these are verification tests run by the operator and reproducible by you. No third-party security audit of these contracts has been commissioned, and this page does not claim one. What it gives you is a set of checks you can run yourself in a few minutes.

Questions

Straight answers

What do I actually own?
A quantity of a cryptocurrency recorded on the Ethereum blockchain. It is not equity, not a loan, and not a claim on the assets or revenue of any company. It entitles you to nothing from anyone.
Is ABTC backed by anything?
No. There are no reserves, no collateral and no assets behind ABTC, and no business or revenue supports it. Its value is whatever the market assigns it, which may be nothing.
Earlier material said this token was linked to a solar project. Is it?
No, and those statements are withdrawn. Previous versions of this site described ABTC as funded by a token presale, tied to energy profits through a buy back, and later as redeemable against electricity bills. None of that applies. The operator's other business activities are separate from ABTC, do not back it, and create no obligation toward holders. Every withdrawn statement is listed in section 9 of the whitepaper.
Will ABTC be listed on an exchange?
No listing is promised, planned as a commitment, or guaranteed. Astra does not state any listing price. There may never be a market of any kind.
Is there a buy back or a burn?
No. The company does not buy ABTC and operates no burn programme. Nothing supports the price.
Can the supply be increased?
No. The token contract is renounced. There is no mint function and no party can alter it.
Why is the token contract renounced but the sale contract is not?
Because they do different jobs. The token contract holds your balance, so renouncing it permanently removes any ability to mint more, freeze your tokens or block your address — that is what protects holders. The sale contract handles payments, and renouncing it would be harmful: the withdraw functions are owner-only, so every payment ever made would be locked inside it forever, unsold tokens could never be recovered, a bug could never be paused, and a stalled Chainlink feed would stop ETH purchases with no way to restore them. A renounced sale contract is an abandoned one.
Can anyone mint more ABTC or freeze my tokens?
No. The token contract owner is the zero address, which nobody controls, so mint, pause, unpause and transferOwnership all revert for every possible caller. The token is also an EIP-1167 minimal clone with its implementation fixed in bytecode and both EIP-1967 proxy slots empty, so the code itself cannot be replaced. There is no blacklist, no transfer fee and no transaction cap. All of this is verifiable on Etherscan.
What are the risks?
You may lose the entire amount you commit. ABTC may trade at any price or at no price, and no market may ever exist. Read the risk disclosure in full before acquiring any.

Who operates this

The issuer

ABTC is issued by 3-102-960698 SRL, a Sociedad de Responsabilidad Limitada registered with the National Registry of the Republic of Costa Rica, corporate ID 3-102-960698, registered 16 April 2026, registered office at Los Yoses, San Pedro, Montes de Oca, San Jose. Manager and legal representative: Dr. Antoun Toubia.

Other activities are unrelated to ABTC. The operator and its founders carry on other commercial activities. None of them back ABTC, are financed by the sale of ABTC, or create any obligation, right or expectation for holders of ABTC. They are not a reason to acquire it.
You can lose everything you commit. ABTC may trade at any price or at no price, and no market may ever exist. Nothing backs it. Read the full risk disclosure before acquiring any.

Contact: info@astrabitcoin.com