Coin & Chain Guides

Deep dives into individual coins and chains SSP supports.

Each coin or chain SSP supports has its own quirks — UTXO vs. account-based, native multisig vs. ERC-4337, fee dynamics, finality times. This collection covers them one at a time.

Square SSP Academy cover: change addresses explained

Change addresses: where the rest of your bitcoin goes

UTXOs are spent whole, so most payments send part of the money back to you as change. Why explorers make it look like you sent more, why wallets use change addresses, the classic lost-change trap, and what SSP does.

5 min
Square SSP Academy cover: Ethereum nonces explained

Nonces: why Ethereum transactions wait in line

Every Ethereum transaction carries a nonce, and the network processes them strictly in order. What the nonce does, why one stuck transaction blocks the rest, how to speed up or cancel, and how smart accounts and other chains handle it.

4 min
Square SSP Academy cover: Kaspa explained

Kaspa explained: a blockDAG, ten blocks a second, and how multisig works

Kaspa lets parallel blocks count instead of discarding them, which is how a proof-of-work chain runs at ten blocks per second. How the blockDAG and GHOSTDAG work, why fees are measured in mass, and how Kaspa multisig vaults work.

5 min
SSP Academy square cover: the Ravencoin coin guide for SSP Wallet

Ravencoin in SSP: Assets, Fees, and the Fork That Rewrote Three Days

Ravencoin's asset layer, why SSP handles the coin but not the tokens, and the August 2026 consensus exploit that erased three days of chain — including whether SSP users were affected.

6 min
SSP Academy square cover: the Zcash coin guide for SSP Wallet

Zcash in SSP: Transparent Only, and Why Upgrades Matter Here

SSP holds ZEC in the transparent pool, not the shielded one — custody, not confidentiality. Plus the consensus branch ID that makes staying updated non-optional.

6 min
SSP Academy square cover: the Bitcoin Cash coin guide for SSP Wallet

Bitcoin Cash in SSP: Addresses That Look Like Bitcoin's, and Why That Matters

The fork kept Bitcoin's address format, and people lost money to it. How CashAddr and SIGHASH_FORKID fix that, plus the lowest default fee in the wallet.

5 min
SSP Academy square cover: the Dogecoin coin guide for SSP Wallet

Dogecoin in SSP: One-Minute Blocks, a Big Dust Limit, and No Cap

A dust limit 1,800x Bitcoin's, fees that look huge and cost nothing, P2SH addresses instead of segwit — and an issuance schedule that never stops.

5 min
SSP Academy square cover: Solana fees and rent explained

Solana Fees and Rent, Explained

Base fees, priority fees and refundable rent, with the real numbers SSP charges — and why your first Solana send costs more than every one after it.

6 min
SSP Academy square cover: the Litecoin coin guide for SSP Wallet

Litecoin in SSP: The Chain Closest to Bitcoin, and Where It Isn't

Same P2WSH multisig, same dust limit, same seed — at a fifth of the fee rate and a quarter of the block time. Plus the one thing SSP does not do: MWEB.

6 min
SSP Academy square cover: SPL tokens and token accounts in SSP

SPL Tokens and Token Accounts in SSP

Why Solana gives every token its own account, who pays the rent for it, and how SSP puts the token's decimals inside the signature you approve.

8 min
SSP Academy square cover: the Flux coin guide for SSP Wallet

Flux in SSP: Sending, Holding, and the One-Hour Rule

Flux transactions expire after about an hour. What that means for two-device signing, why fees are trivial, and how node collateral stays in your own multisig.

7 min
SSP Academy square cover: Solana in SSP

Solana in SSP

How SSP holds SOL and SPL tokens in a 2-of-2 multisig with no creator, who pays the fees, and what your devices verify before signing.

7 min
Asset moving across a bridge between EVM chains, secured by SSP's two-device signing

Bridging Between EVM Chains from SSP

How bridging EVM chains works, why bridges are a top crypto loss vector, and how to bridge safely from SSP with WalletConnect and 2-of-2.

8 min
Square cover showing SSP's 2-of-2 on EVM: an extension key and an SSP Key combining into a single aggregated signature for an ERC-4337 smart account.

EVM Multisig the Account Abstraction Way

How multisig works on EVM chains and why SSP builds its 2-of-2 as an ERC-4337 smart account that verifies a Schnorr-aggregated signature.

8 min
Square SSP cover titled Gas Fees on Ethereum with gas and energy icons on a dark amber background

Gas Fees on Ethereum, Explained for Self-Custody Users

How Ethereum gas fees work for self-custody users: the gas used x gas price formula, EIP-1559 base fee and tip, why failed txs still cost gas, and SSP.

8 min
Square SSP cover with amber chain icons and the title Using SSP on Polygon, Base, and Other EVM Chains over a dark blue backdrop

Using SSP on Polygon, Base, and Other EVM Chains

One SSP 2-of-2 multisig controls your accounts across Polygon, Base, and every EVM chain. Learn gas tokens, addresses, and pitfalls.

8 min
SSP Academy square cover: Sending and Receiving Ethereum with SSP

Sending and Receiving Ethereum with SSP

Send and receive ETH in self-custody with SSP: your 0x address, the 2-of-2 co-sign flow, the nonce, gas, and ERC-20 tokens.

8 min
SSP Academy square cover: Ethereum in SSP

Ethereum in SSP

How SSP holds ETH in a 2-of-2 multisig via an ERC-4337 smart account, and how Ethereum's account model differs from Bitcoin.

7 min
Diagram of many small Bitcoin UTXO coins consolidating into one larger UTXO

Consolidating UTXOs in SSP

What a Bitcoin UTXO is, how small UTXOs pile up, and when to consolidate them in SSP's 2-of-2 multisig to keep future spends cheap.

6 min
Privacy-themed cover with hidden-eye, shield, coins and wallet icons for a Bitcoin CoinJoin guide

CoinJoin, Mixing & Bitcoin Privacy in Self-Custody

Why Bitcoin's public ledger leaks information, what CoinJoin really is, and the privacy practices that work with SSP self-custody today.

6 min
Bitcoin cold storage vault concept with lock, key, shield and database icons in SSP brand style

Bitcoin Cold Storage with SSP Multisig

How SSP's 2-of-2 multisig works as a Bitcoin cold storage vault, why two devices beat one key, and the honest trade-off versus air-gapped hardware.

6 min
Cover graphic for Taproot and SSP Bitcoin multisig with key, shield, coins and lock icons

Taproot and SSP Bitcoin Multisig

How taproot multisig differs from legacy P2SH and P2WSH, what Schnorr key aggregation changes, and where SSP's 2-of-2 fits today.

6 min
SSP coin guide cover for Bitcoin fee strategy with coins, lightning, and database icons

Bitcoin Fee Strategy in SSP

Bitcoin transaction fees explained: what sat/vB means, how the mempool sets the price, and how to pick a fee when you send from SSP multisig.

7 min
SSP article cover for receiving Bitcoin, showing QR code, wallet, coins and shield-check icons

Receiving Bitcoin Into SSP

How to receive Bitcoin in a wallet with SSP: the 2-of-2 multisig address, sharing it safely, change addresses, and verifying funds.

6 min
Bitcoin logo with the SSP wallet icon, both rendered in the SSP brand palette

Bitcoin in SSP

How Bitcoin works, how SSP holds it via 2-of-2 multisig, how to send and receive, common pitfalls to avoid, and what SSP doesn't do.

6 min