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Privacy coins

How privacy coins work and where they are restricted.

Privacy Coins — the full guide to this subject.

Guides on this site

How CoinJoin Works for Bitcoin Privacy and Where It Falls Short

Bitcoin’s ledger is transparent. Every transaction, every address, every amount sits in the open for anyone...

How Ring Signatures Hide the Sender in Monero Transactions

A ring signature is not a Monero invention. The concept was described by cryptographers in 2001. Monero ado...

Why Monero Has a 10 Block Unlock Time Before You Can Spend

Monero enforces a 10-block waiting period before newly received funds can be spent. This is not a wallet bu...

Cake Wallet vs Monero GUI: Mobile Convenience or Desktop Control

Cake Wallet and the Monero GUI client represent opposing ends of the same coin: privacy. Both are non-custo...

Monero Full Node vs Remote Node Privacy and Trust Tradeoffs

Every Monero transaction must be checked against the network's rules. Someone has to do that checking. The ...

Monero Ring Size 16: Why the Default and What Changing It Does

Monero enforces a minimum ring size of 16 network-wide. This isn't a suggestion or a wallet setting you can...

Why exchanges delist privacy coins and what regulations drive it

Centralized exchanges delist privacy coins because they present compliance risks the platforms cannot easil...

How zcash shielded transactions use zero knowledge proofs

Zcash offers something most cryptocurrencies do not: the ability to prove a transaction is valid while reve...

Zcash Transparent vs Shielded Transactions Speed and Privacy

Zcash offers two fundamentally different address types. Transparent addresses (t-addresses) work much like ...

Latest from holdium.xyz

How CoinJoin Works for Bitcoin Privacy and Where It Falls Short

Bitcoin’s ledger is transparent. Every transaction, every address, every amount sits in the open for anyone to inspect. CoinJoin is one method people use to introduce a degree of privacy into that system by breaking the link between sender and receiver. It does not make Bitcoin as private as Monero.

How Ring Signatures Hide the Sender in Monero Transactions

A ring signature is not a Monero invention. The concept was described by cryptographers in 2001. Monero adopted it and made it the backbone of its privacy model. Ring signatures solve a specific problem: how to prove you are one of several possible signers without revealing which one.

Privacy coins

Privacy coins are cryptocurrencies designed to conceal transaction details - sender, receiver, and amount - from public view. Unlike Bitcoin, where every payment is recorded on an open ledger anyone can analyze, privacy coins use cryptographic techniques to break the link between addresses and hide

Why Monero Has a 10 Block Unlock Time Before You Can Spend

Monero enforces a 10-block waiting period before newly received funds can be spent. This is not a wallet bug, a performance feature, or a design oversight. It is a consensus rule hardcoded into the protocol, and every node enforces it.

Cake Wallet vs Monero GUI Mobile Convenience or Desktop Control

Cake Wallet and the Monero GUI client represent opposing ends of the same coin: privacy. Both are non-custodial. Both let you hold your own keys. But the experience of using each is radically different, and the choice between them depends on what you value more - convenience in your pocket or granul

Monero Full Node vs Remote Node Privacy and Trust Tradeoffs

Every Monero transaction must be checked against the network's rules. Someone has to do that checking. The person running the wallet can either do the work themselves, trusting their own copy of the blockchain, or delegate the work to a third party. That choice is the difference between a full node

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Crypto news

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Crypto prices right now

Bitcoin (BTC)
$78,624
▼ -0.51% down 24h
Ethereum (ETH)
$2,464
▼ -1.95% down 24h
Solana (SOL)
$102.57
▼ -3.72% down 24h

How to convert crypto: on-chain vs off-chain

Off-chain (on an exchange)

Your trade happens inside the exchange's own ledger. Nothing touches the blockchain until you withdraw.

  • Cheapest and fastest for common pairs
  • Needs an account and usually ID verification
  • The exchange holds the coins until you withdraw them
  • Best for converting to and from cash

On-chain (a DEX or swap)

You swap from your own wallet. The transaction settles on the chain and you pay its fee.

  • No account, no custodian — you keep the keys
  • You pay network fees, which vary a lot by chain
  • Small or new tokens often only trade here
  • Slippage and thin liquidity are real costs on low-volume pairs
Before any on-chain swap: check the token's contract address against a block explorer, start with a small test amount, and review what you are approving — an unlimited token approval to an unknown contract is how most wallet drains actually happen.

Not financial advice. holdium.xyz publishes market data and general information about digital assets. Crypto assets are volatile and you can lose everything you put in. Nothing here is a recommendation to buy, sell or hold, and we make no price predictions.

Prices are sourced from third parties and may be delayed or wrong. Verify anything you intend to act on against a primary source.