Dolan Duck Blog

Wormhole is a cross-chain messaging protocol that lets assets and data move between Solana and other blockchains. Bridging does not physically move a token — the original is locked or burned on the source chain and a representation is minted on the destination, with a network of guardians attesting that the first step happened. That attestation layer is the entire trust model and the entire risk: a bridged token is worth what the bridge is worth, which is a different proposition from holding a native asset. Wormhole has also been used as infrastructure beyond asset transfers, including by oracle networks delivering price data.

Raydium is the largest automated market maker on Solana by total value locked, holding somewhere between $1.5B and $2.2B through 2026 and processing tens of billions in quarterly volume. It runs several distinct pool types rather than one: concentrated liquidity pools for deep pairs, constant-product pools for everything else including most memecoins, and LaunchLab, its own bonding-curve launch venue added in 2025. For a memecoin trader the practical relevance is that a large share of Solana pairs live in Raydium pools, and which pool type a token sits in determines how its price behaves under pressure.

Pyth Network is an oracle that brings real-world prices onto Solana and other blockchains, sourced directly from over 120 publishers including trading firms like Jane Street, Cumberland and Wintermute alongside venues such as CBOE. It uses a pull model: prices are aggregated continuously on Pythnet, its own appchain, and an application requests the latest update on-chain at the moment it needs one, rather than a feed being pushed constantly whether anyone reads it. That design is why oracle costs scale with usage instead of with time, and it is the main structural difference from earlier oracle networks.

Metaplex is the protocol that supplies Solana’s metadata layer — the programs that attach a name, symbol, image and creator information to a token or NFT. This matters far beyond NFTs, because the SPL Token Program itself stores none of that: a mint records supply, decimals and authorities, and nothing else. Every memecoin ticker and logo you have ever seen in a wallet comes from a Metaplex metadata account sitting alongside the mint. That separation is also why token names can be changed after launch, and why the ticker is not an identifier.

Helius is a Solana infrastructure provider whose main product is RPC access — the endpoints that wallets, DEX interfaces and bots use to read chain state and submit transactions. An RPC node is not a validator: it does not vote or produce blocks, it maintains a copy of the chain and answers queries about it. Every action you take in a wallet passes through one, and the quality of that endpoint determines whether your transaction reaches a leader in time or quietly dies in a queue. Most traders never think about RPC until a launch, when suddenly it is the only thing that matters.

Token-2022 is a separate Solana token program that keeps the original SPL interface intact while adding optional features called token extensions — transfer fees, confidential balances, freeze-by-default states, hooks that run custom code on every transfer, and a permanent delegate that can move tokens without the holder’s signature. It does not replace the original SPL Token Program; both run side by side at different program addresses, and a mint belongs to exactly one of them forever. For traders the practical consequence is blunt: two tokens that look identical in a wallet can behave completely differently on transfer.

Solscan, the official Solana Explorer and SolanaFM all read the same chain and present it differently, which is why experienced users keep more than one open. Solscan is the best general-purpose option for token checks and holder data. Solana Explorer is the plainest reflection of raw chain state, useful precisely because it interprets nothing. SolanaFM decodes complex transactions and compressed NFTs better than either, though it has been less actively developed since Jupiter acquired it in September 2024. None is authoritative — they are interfaces over the same ledger, and when they disagree it is a display difference, not a chain difference.

Rent on Solana is a refundable SOL deposit that every account must hold to stay in memory, sized by how many bytes that account occupies. It is not a fee and nobody keeps it: the deposit sits locked while the account exists and returns in full the moment the account is closed. The name is a leftover from an earlier design where accounts genuinely paid rent over time and could be deleted when they ran dry. That version is gone — new accounts must be rent-exempt from creation — but the deposit remains, and it is the reason a wallet that has traded fifty memecoins has SOL it cannot see.

Solana programs and Ethereum smart contracts do the same job through opposite architectures: a Solana program is stateless executable code that owns no data, while an Ethereum contract bundles code and storage into a single entity. Every piece of state a Solana program touches lives in a separate account passed in explicitly with each transaction. That one design decision cascades into everything else — it is why Solana can execute transactions in parallel, why programs are upgradeable by default, and why a Solana “contract audit” is asking a different set of questions than an Ethereum one.

A Solana keypair is a single Ed25519 private key plus the public key mathematically derived from it, and that public key — encoded in base58 — is your wallet address. Nothing else defines ownership on Solana: there is no account registration, no username, and no record anywhere linking you to the address beyond the fact that only your private key can produce a valid signature for it. The address exists the moment the key exists, whether or not it has ever received a lamport. Understanding this one relationship clears up most of the confusion around seed phrases, multiple accounts and why a leaked key is unrecoverable.

Solana devnet, testnet and mainnet beta are three completely separate networks running the same software with different purposes and no shared state. Mainnet beta is the real chain where SOL has value. Devnet is a sandbox where developers get free tokens on request and nothing they do has consequences. Testnet is where validator client releases get stress-tested before touching real money, which means it breaks on purpose. An address can exist on all three at once holding different balances, and a token that looks legitimate on devnet is worth exactly nothing.

Compute units are Solana’s metering system for computational work — the chain’s equivalent of Ethereum gas, but priced and capped very differently. Every instruction a transaction executes consumes compute units from a budget, and if the budget runs out mid-execution the transaction fails and still costs a fee. Unlike gas, compute units are not what you pay with: they are a resource limit you request, and the priority fee you set is multiplied by that requested amount. Getting the two numbers wrong in either direction is why swaps fail during busy minutes.

A Solana transaction expires because every transaction carries a recent blockhash that stays valid for only 150 blocks — roughly a minute of real time. Once the network moves past that window the transaction becomes permanently invalid and cannot be processed, no matter how well-formed it is. This is deliberate: Solana has no mempool holding pending transactions indefinitely, so the blockhash acts as both a timestamp and a deduplication key. “Transaction expired” and “blockhash not found” are the same event described from different angles, and they are the single most common reason a memecoin buy silently does nothing.

Sending tokens to the wrong Solana address is final in almost every case. There is no reversal mechanism, no support desk with authority over the ledger, and no way to force a transfer back — the network executed a valid instruction signed by your key, and that is the end of it. Whether anything can be done depends entirely on who or what controls the destination: a friend’s wallet is a conversation, an exchange deposit address is a support ticket with poor odds, and a randomly mistyped address is almost certainly permanent.

Revoking a token approval on Solana means removing a delegate — an address you previously authorised to move tokens from one of your token accounts. Solana’s model differs from Ethereum’s: instead of a blanket allowance for a contract across your whole wallet, each token account can name one delegate with an approved amount, and revoking clears that account’s delegate specifically. Checking and revoking is worth doing periodically, but it is important to understand the limit: on Solana the more common way wallets get emptied does not involve delegates at all.