Changelly vs Dune

Changelly functions primarily as an instant cryptocurrency exchange aggregator rather than a conventional custodial trading venue. Rather than depositing funds into an internal exchange ledger to trade on a central limit order book, users initiate swaps through an on-demand routing mechanism. The catalog spans more than 500 digital tokens across numerous native layer-one blockchains and multi-chain formats. This breadth includes major assets such as Bitcoin, Ethereum, and Solana alongside numerous cross-chain utility tokens, decentralized finance assets, and emerging protocol currencies that may lack liquid pairings on standard spot exchanges.

The service structures transactions around two specific execution mechanics: floating rates and fixed rates. A floating rate reflects current market quotes across connected liquidity providers, recalculating final proceeds when the incoming blockchain deposit officially registers on the network. A fixed rate locks the conversion quote for a designated window, usually around 15 to 20 minutes, insulating the swap from short-term market fluctuations at the expense of a wider built-in spread. Beyond asset-to-asset conversions, the platform integrates multiple fiat payment gateways, allowing visitors to purchase cryptocurrency using debit cards, credit cards, bank wires, or mobile wallets with direct delivery to their own external addresses.

Dune operates primarily as a web-based data workspace that abstracts raw blockchain data into clean relational schemas. Supported networks span major Layer 1 and Layer 2 ecosystems, including Ethereum, Solana, Bitcoin, Arbitrum, Optimism, Polygon, and Base. Raw blockchain data, encompassing block headers, transaction receipts, and log traces, is parsed into structured tables via DuneSQL, an optimized query engine based on Trino. This structure allows researchers to query event logs, contract method calls, and transfer traces directly.

Beyond raw blocks, the platform provides curated datasets through its Spellbook repository, a community-maintained transformation layer powered by dbt. These abstractions aggregate complex protocol interactions, such as automated market maker swaps, lending pool liquidations, and non-fungible token marketplace sales, into standardised multi-chain tables. Visualisation modules allow users to turn raw table outputs into line charts, bar plots, area graphs, counters, and pie visualisations, which can be grouped into composite shareable dashboards. Protocol builders can publish project pages that display real-time ecosystem health metrics to the broader market, while analysts can fork existing community code to modify underlying parameters without starting from scratch.

Understanding the full cost profile of a Changelly transaction requires separating exchange routing margins, payment partner surcharges, and decentralized network execution expenses. For standard crypto-to-crypto trades, Changelly charges a baseline exchange fee that commonly hovers around 0.25 percent on floating transactions. However, this figure does not represent the entire financial friction. Users also pay the baseline blockchain transaction fee required to deliver the outgoing asset to Changelly, as well as the miner or validator fee subtracted from the proceeds to send the converted coins to the designated destination address.

When acquiring cryptocurrency with fiat currency, the cost structure shifts considerably because transactions route through external on-ramp operators such as Banxa, MoonPay, Simplex, or Topper. These third-party vendors establish their own card processing surcharges, banking clearance rates, and retail foreign exchange spreads. Total acquisition costs through fiat gateways frequently land between 3 percent and 7 percent above spot market benchmarks, depending on the selected currency pair, local payment method, and network congestion. Because Changelly settles directly to self-custody wallets without retaining ongoing balances, it does not levy internal account withdrawal fees, but network validation expenses are always deducted from final payout totals.

Dune uses a freemium model where users can sign up at zero initial cost to write public queries, build public dashboards, and explore community research. Free accounts receive a baseline allowance of monthly query execution credits, sufficient for casual exploration and standard research workloads. However, free accounts run on shared compute queues, which can lead to longer execution waiting times during peak network congestion, and all published work remains publicly visible.

For teams requiring dedicated resources, Dune provides paid commercial tiers, commonly structured around Plus and Premium subscriptions alongside custom Enterprise packages. Paid plans introduce private query authoring, private dashboards, larger allowances of monthly compute credits, prioritized query execution pipelines, and automated query scheduling. Furthermore, Dune offers programmatic API tiers priced according to monthly datapoint and execution unit allowances. Heavy data users consuming continuous streaming API responses or running resource-intensive historical aggregations must monitor their monthly credit burn rates closely, as additional compute units and private team seats scale total recurring costs.

Changelly operates on a non-custodial framework for its primary swap workflow, meaning the platform does not hold user funds in long-term custody accounts. Assets move through temporary intermediary processing infrastructure strictly during the lifecycle of an active swap. Once the conversion executes across connected liquidity pools, the resulting balance dispatches to the customer external destination address. This structure removes the threat of long-term custodial balance freezes resulting from platform insolvency, though it does not eliminate operational settlement risk while assets sit in transit during the execution window.

While standard registration allows basic tracking, users can implement standard account security controls such as two-factor authentication via mobile authenticator applications. From a regulatory perspective, Changelly maintains automated transaction monitoring systems that assess wallet addresses against global sanctions lists, illicit finance databases, and risk scoring criteria. Even though initial account creation does not always mandate comprehensive Know Your Customer documentation upfront, transactions flagged by automated risk triggers are halted immediately. In those situations, release of funds requires the initiator to submit government-issued identification, proof of address, and source-of-funds verification before the swap completes or a refund processes.

Dune is entirely non-custodial and read-only regarding asset management. The platform does not hold, transmit, custody, or manage cryptographic keys, wallet funds, or financial balances. Users connect to the analytics dashboard using standard email credentials or single sign-on mechanisms, with optional multi-factor authentication available to helps protect organizational accounts. Read-only wallet addresses can be queried publicly across raw ledger records, ensuring that no sensitive private keys are ever requested or stored on the platform servers.

From an organizational data security perspective, Dune supports role-based access management for corporate accounts and research teams. Workspace administrators can designate member permissions, control private dashboard visibility, and manage the generation and revocation of API keys. Network communications are secured through standard transport layer encryption protocols. Because public queries and schemas are accessible to all platform users by default, enterprise users managing proprietary trading strategies or unpublished commercial metrics must helps support their dashboards are explicitly set to private within paid team workspaces to prevent unintended strategy disclosure.

Changelly offers service on a global scale, but regulatory restrictions restrict access across multiple jurisdictions. The platform does not serve residents or citizens of sanctioned regions, including Cuba, Iran, North Korea, Syria, the Crimea region, and other designated restricted territories. Operating boundaries also apply within portions of the United States, where state-level money transmission licensing regimes restrict services for residents of states such as New York, Hawaii, and Rhode Island. Fiat payment methods depend on the specific licensing and local operational permissions held by integrated partner on-ramps.

Customer assistance operates primarily through a continuous 24/7 digital live chat system integrated into the web portal and mobile software, accompanied by a structured ticketing desk and a searchable knowledge center. Support interactions center largely around paused swaps, transaction delay queries caused by blockchain network congestion, or identity verification requirements prompted by risk scoring systems. Response times fluctuate based on platform activity and crypto market volatility. Users seeking assistance with fiat purchasing failures must often coordinate directly with the third-party payment vendor responsible for card processing rather than Changelly internal staff.

Founded in Norway in 2018, Dune provides global web availability without traditional financial services licensing requirements, as it provides data analytics rather than investment execution or money transmission services. Access to the platform web portal and documentation is available internationally, subject to standard international sanction boundaries and acceptable use policies that prohibit malicious scraping or system abuse. Individual researchers and enterprise organisations can register accounts using standard email credentials or single sign on authentication without needing accredited investor verification.

Customer assistance is centered around an extensive public knowledge base, official platform documentation, and an active community Discord server. Free tier users primarily obtain assistance through community discussion channels and shared public forums, where experienced community analysts collaborate on SQL debugging and table mapping. Paid subscription tiers receive dedicated support routing, including direct technical assistance channels, higher service level agreements for enterprise accounts, and dedicated onboarding sessions for data engineering teams integrating Dune API streams into internal production data pipelines.