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Bitcoin Cash changed the block size. Bitcoin SV changed the block size back. Bitcoin Gold changed the mining algorithm.
EXCAL changed the locks themselves.
Every Bitcoin fork before this one kept Satoshi's script system and tweaked a parameter. EXCAL threw the scripts out. No opcodes. No script interpreter. Just lock types — PKH, PQH, HTLC, QHTLC, Trifold — quantum-resistant by construction, on a chain that split from Bitcoin at block 968,698 and never looked back.
This is the first hard fork to rebuild Bitcoin's locks from scratch: opcode-free and quantum-resistant.
And the coin is for sale right now. Not a presale. Not a promise. The EXCAL is already locked on-chain, in public, with the receipts below. You don't message me. You don't trust me. You run a script, sign in your own wallet, and the swap executes itself.
**THE OFFERS**
**Lot 1 — 1 EXCAL for 1 BTC. Exactly 1:1.**
Funding txid: 449fb35dafc7dc8f40faca892845730725961840b0fb945fa8b88b4e902287f1
Confirmed on the Excalibur fork in block 42900. Exactly 1 EXCAL locked in a quantum-resistant QHTLC.
Lock: 04584460868d15769e5cefba276dc43709e904258f
Secret hash: 95d706ed8b3397cfbcefabd827a58b5d24dac1d63308cb74171549f7ce75d294
Refund timeout: fork height 62899.
**Lot 2 — 1,000 EXCAL for whatever BTC you offer. You name the price.**
Funding txid: 4873ebb3a40b83f2401266587aba9f73bf837dd51349e07029b06819fcccfc95
Confirmed on the Excalibur fork in block 42899. Exactly 1,000 EXCAL locked in a quantum-resistant QHTLC.
Lock: 045220338521d9905441244e566634f227b72bbb92
Secret hash: d1baf924987ec0b2c4885f31b62abecf46919b113d2f0f3b9de83156c8564663
Refund timeout: fork height 62898.
Full signed transactions, claim roots, refund roots, and the complete self-serve kit are public here:
https://github.com/Holedozer1229/excalibur-chain/tree/master/self-serveIssues: #2 (1,000 EXCAL) and #3 (1 EXCAL).
**HOW IT WORKS — THREE STEPS, NO MESSAGES**
1. Run taker_htlc.py from the kit with your amount (--lot 1k or --lot 1excal). It builds your unsigned BTC funding PSBT and a fresh delivery key. Sign it in your wallet (Sparrow / Electrum / Bitcoin Core) and broadcast. Post your witness script hex as a reply here so anyone can verify your HTLC.
2. The watcher verifies your funding and publishes the EXCAL claim seed ENCRYPTED to your delivery pubkey. Only you can decrypt it. The raw seed is never published, so nobody can front-run your claim after the secret appears.
3. I claim your BTC — the secret appears on-chain. You decrypt the seed, run taker_claim.py with the secret and your EXCAL LEGACY address (1...), post the signed claim hex as a reply here, and the fork node mines it. The EXCAL lands at your address.
If I never claim your BTC, you refund it after your HTLC timeout (your funding height + 144 blocks). One lot, one taker — first funded HTLC wins.
**WHY THIS IS REAL**
- Both lots are funded and confirmed on-chain. Not "coming soon." Check the txids yourself.
- The fork is live and merge-mined against real Bitcoin blocks right now.
- The swap is atomic: either both sides move or neither does. No escrow, no middleman, no "send first and trust me."
- The code is public. The locks are public. The secrets are hash-committed in public. Verify everything before you fund anything.
Every fork before this one asked you to trust a new parameter. This one asks you to verify new locks.
1 EXCAL = 1 BTC. First funded HTLC wins.
