Every Bitcoin address format moves the same BTC, but not for the same fee. A legacy address sending to Bitok Arena costs measurably more in transaction fees than a Native SegWit address sending the identical amount — on every single entry, not just once. The fee itself is calculated per virtual byte of transaction data, not as a flat charge, which is exactly why a bulkier address format costs more regardless of the BTC amount being sent. For a one-time send, the difference is a rounding error. For someone entering a daily competition round after round, that fee gap compounds into a meaningful, entirely avoidable cost over weeks and months of otherwise identical entries.
The address format doesn't change what you own. It changes what it costs to move it — every single time you move it.
Three formats circulate today: Legacy (starting with "1"), P2SH (starting with "3"), and Native SegWit (starting with "bc1q"). All three are valid, all three are accepted broadly across the Bitcoin network, and all three will get BTC to a destination address correctly. They are not, however, equally efficient — and efficiency is the entire question for someone sending BTC on a recurring basis.
What Actually Changes Between Formats
The technical difference comes down to how much data each transaction type has to include on the blockchain to prove ownership and authorize the spend. Legacy transactions carry the largest data footprint. Native SegWit restructures that data more efficiently, which directly reduces the fee for an equivalent transaction. A typical Legacy input takes up roughly twice the virtual size of a Native SegWit input doing the same job, because SegWit moves the unlocking signature data outside the section of the transaction that counts fully toward that size. P2SH sits in between, since it wraps a SegWit-style script inside a Legacy-compatible shell — cheaper than pure Legacy, but still carrying more overhead than a native bc1q input.
The three address formats compared on what actually matters for a recurring Bitok Arena entry:
Legacy (starts with 1) — the original Bitcoin address format, universally compatible, but carrying the largest transaction size and correspondingly the highest fee for the same amount sent.
P2SH (starts with 3) — a wrapped SegWit format that reduces fees versus Legacy while remaining compatible with older wallets that don't yet support Native SegWit directly.
Native SegWit (starts with bc1q) — the most fee-efficient format in common use, with the smallest transaction data footprint of the three, and the format Bitok Arena recommends for sending.
The BTC amount that arrives is identical regardless of format. Only the fee paid to get it there changes — and that fee is paid every single round, not once.
Wallet support for Native SegWit is close to universal at this point across major hardware and software wallets, which removes the main historical reason someone would default to Legacy. The remaining reason people still send from Legacy addresses is usually inertia — an old wallet, an old habit, or simply never having checked which format their address uses.
What the First Character Reveals
Checking is faster than the confusion about it suggests. The address itself tells you everything needed — no lookup, no external tool, no guessing required.
How to identify your current address format directly from the address itself:
Starts with 1 — Legacy format; works everywhere but costs the most per transaction.
Starts with 3 — P2SH format; a reasonable middle ground if your wallet doesn't yet support Native SegWit.
Starts with bc1q — Native SegWit; the recommended format for sending to Bitok Arena, and the cheapest of the three per transaction.
Most wallets released in the last several years default to generating bc1q addresses automatically — if an existing address starts with 1 or 3, the wallet settings usually include an option to generate a Native SegWit receiving address without starting a new wallet from scratch.
Switching formats doesn't require moving to a new wallet or a new seed phrase in almost every case — it's typically a setting inside the existing wallet that generates a new receiving address on the same seed, using the more efficient format going forward. Funds already sitting at an old Legacy or P2SH address don't need to be moved immediately either — they stay perfectly spendable at that address indefinitely. The efficient-format switch only affects addresses generated afterward, so there's no urgency to sweep old balances, only a reason to make sure the next receiving address, and the next send, uses the cheaper format.
Why the Choice Compounds on Bitok Arena
A single entry's fee difference between Legacy and Native SegWit is small in absolute terms. Multiply that difference across daily rounds over weeks and the gap stops being trivial — it becomes a recurring cost with no offsetting benefit, paid purely because of a format choice that takes one settings change to fix. Someone entering once a week feels almost none of it. Someone entering daily is paying that premium roughly thirty times a month, on top of whatever the base network fee happens to be during that specific window — the format gap doesn't replace the normal cost of using the network, it stacks directly on top of it, every time.
The cheapest format doesn't send more Bitcoin. It just stops handing the difference to the network in fees you didn't need to pay.
For someone treating Bitok Arena as a daily habit rather than a one-time try, the format decision is one of the few purely mechanical variables entirely within their control. Unlike the leaderboard itself, which depends on what everyone else commits, the fee paid per entry depends on nothing but a wallet setting checked once.
A Native SegWit address isn't a marginal upgrade for someone entering once — it's a recurring discount for someone entering daily, and the switch takes one settings change to lock in permanently. Confirm your receiving address starts with bc1q, then send BTC from your self-custody wallet to the Bitok Arena master wallet knowing today's fee is the smallest it can be.