Dedicated Merlin Chain RPC node. A private Merlin Chain RPC endpoint that only you use: no rate limits, every method on, one fixed monthly price.
Merlin Chain is a Bitcoin layer-2 integrating a ZK-rollup network, decentralized oracles and on-chain BTC fraud-proof modules.
Merlin Chain RPC endpoint and network details.
| Network | Merlin Chain mainnet |
| Chain ID | 4200 (0x1068) |
| Currency | BTC |
| Public RPC URL | https://rpc.merlinchain.io |
| Wallet | Add Merlin Chain to MetaMask or another browser wallet. |
| Interfaces | JSON-RPC · WebSocket |
| Dedicated endpoint | Your own Merlin Chain RPC endpoint, from $179/mo → |
Public URLs are shared and rate limited: fine for a wallet, not for an app, bot or indexer. Facts from Merlin Chain's official documentation.
Order a dedicated Merlin Chain RPC node.
Pick the node and the city. Where a city shows a price, pay in crypto and we start building; anywhere else, you get a firm quote within the hour.
What every dedicated Merlin Chain node includes.
- Fully managed at no additional cost: we set it up, sync it, monitor it 24/7, apply every upgrade and fix it if anything breaks
- Monitoring at no additional cost: live node and server metrics for your node in your dashboard
- No rate limits: the hardware is the only ceiling
- Every RPC method on, debug and trace included
- Unlimited WebSocket connections
- Your own domain and an IP allowlist you control
- 99.99% SLA in writing, with service credits
- 24/7 support answered by engineers
Merlin Chain node requirements, and what we build.
Chain facts from Merlin Chain's official documentation (docs.merlinchain.io). Where it is silent, the row says so.
| Node software | cdk-erigon |
| Interfaces | JSON-RPC, WebSocket |
| Full node | Yes, from $179/mo |
| Archive node | Confirmed at quote time |
| Validator | A CDK zkEVM L2 with centralized sequencing; public nodes run with sequencer mode disabled. |
| Chain ID | 4200 |
| Gas token | BTC |
| Official hardware guidance | The official mainnet cdk-erigon RPC guide recommends CPU: 4 vCores, RAM: 32GB, Disk: 1TB NVMe SSD with 250,000 IOPS and 1000 MiB/s throughput for a Merlin JSON-RPC node. source ↗ |
| Argusnodes build | Meets the official guidance above with headroom on top, never at the minimum. Ask and we tell you the exact CPU, RAM and NVMe; root access on request. |
What changed on Merlin Chain recently
- Merlin mainnet fork9 upgrade (cdk-validium-node v3.1.0, zkevm-prover v6.0.2) ran in the 24 Jan 2025 02:00-14:00 UTC window; operators had to sync to the fork8 halt block first. source ↗
- Merlin mainnet fork12 upgrade ran 26 Jun 2025 02:00-14:00 UTC and moved RPC nodes to cdk-erigon (v2.0.0/v2.0.2), recommended on a dedicated 4 vCore/32 GB/1 TB NVMe server separate from fork9 JSON-RPC servers. source ↗
- A scheduled mainnet maintenance on 20 Jan 2026 15:00 UTC required RPC operators to upgrade cdk-erigon from v2.0.2 to v2.0.3, with 48-72 hours of possible intermittent RPC availability. source ↗
- The legacy zkevm-node RPC guide specifies 64 vCore / 128 GB / 2 TB NVMe per server, far heavier than the current cdk-erigon recommendation; make sure pricing assumes the cdk-erigon path. source ↗
Sources: docs.merlinchain.io/merlin-docs/developers/builder-guides/networks/mainnet · docs.merlinchain.io/merlin-docs/developers/run-a-merlin-node/deployment-and-configuration/deploy-an-erigon-rpc-for-mainnet · docs.merlinchain.io/merlin-docs/developers/run-a-merlin-node/validator-coming-soon
Public Merlin Chain RPC URLs, checked every week.
Free, shared Merlin Chain endpoints from the chain registry that answered eth_chainId with 4200 in our weekly check (1 of 3). Good for a wallet or a test; once an app, bot or indexer depends on it, move to a dedicated Merlin Chain RPC endpoint.
| Endpoint | |
|---|---|
https://rpc.merlinchain.io |
Dedicated Merlin Chain RPC node: the questions buyers ask.
What is a Merlin Chain RPC node?
A server running Merlin Chain's node software (cdk-erigon) that answers RPC requests: reading balances and state, and sending transactions. It can be public and free, shared by a provider's customers, or dedicated to one client.
What is a dedicated Merlin Chain RPC node?
A Merlin Chain node on a bare-metal server that runs for one client only, with its own private RPC endpoint. Nobody else's traffic shares the machine, so there is no rate limit and no noisy neighbour, and every method the client exposes is on. Argusnodes builds, syncs, monitors and upgrades it for you at one fixed monthly price.
Is my Merlin Chain node managed and monitored, and what does that cost?
Yes, and so is monitoring, both at no additional cost. We set up and sync the node, watch it 24/7 with live node and server metrics in your dashboard, apply every network upgrade and client update, and fix it when something breaks. If you need help around the node, such as connecting it to your app, moving off another provider or setting up an indexer, our engineers help with that too, at the same monthly price.
What is a private Merlin Chain RPC endpoint?
An RPC endpoint that only your applications use. It sits on a dedicated Merlin Chain node that is yours alone, on your own domain if you want one, and answers only the IP addresses you allowlist. No other customer's traffic shares the machine, so nobody else's burst becomes your latency, and there is no rate limit to hit.
How long until my Merlin Chain node is live?
As soon as it has synced with the Merlin Chain network, and we tell you the moment it is ready. Sync time depends on the node type, so your quote carries an estimate for your exact setup rather than a number that is sometimes wrong. The quote itself lands within the hour, around the clock.
What is included in the from $179/mo for my Merlin Chain node?
Everything the node can do, with the premium add-ons other providers bill separately included free: unlimited RPS, every RPC method including debug and trace, unlimited WebSocket connections, your own domain with an IP allowlist, 18 cities to choose from, a 99.99% SLA with credits, 24/7 engineer support and live p50/p99 in your dashboard. There is no add-on price list because nothing is an add-on.
What hardware will my Merlin Chain node run on?
A machine that meets Merlin Chain's official hardware guidance (quoted in the spec sheet on this page) with headroom on top, on a dedicated bare-metal server. We never build at the minimum, because a node sized to the minimum becomes the bottleneck the day the chain grows. Ask before you order and we tell you the exact CPU, RAM and NVMe; the delivery email names the server, and root access is yours if you want it.
Does Argusnodes run Merlin Chain archive nodes and trace methods?
Archive support on Merlin Chain is confirmed against its documentation as part of your quote. Every method the client exposes is on by default at no extra charge.
Can I run a Merlin Chain validator with Argusnodes?
A CDK zkEVM L2 with centralized sequencing; public nodes run with sequencer mode disabled. We run every node type the chain actually offers and none it does not.
Can I move my Merlin Chain endpoint from another provider?
Yes. A dedicated Merlin Chain node speaks the same JSON-RPC and WebSocket interfaces as the shared endpoint you use today, so migration is pointing your application at your own endpoint. Billing is monthly with no lock-in on our side, and support engineers are on the channels 24/7 during cutover.
Are there rate limits or connection caps on a dedicated Merlin Chain node?
No artificial ones: unlimited RPS and no connection cap. The machine is yours alone, so the hardware is the only ceiling: if it can serve the request, you can send it. There is no per-plan connection cap because there is no plan tier.
How do I pay for my Merlin Chain node, and can I cancel?
In crypto, with no KYC and no setup fee. Pay monthly, or save 5% quarterly and 10% annually, and your price is locked for as long as your node runs. Cancel at the end of any term; the node is provisioned for you alone, so there is no meter to escape and no exit fee.
What is the Merlin Chain chain ID?
4200 (hex 0x1068), per Merlin Chain's official documentation. A dedicated Merlin Chain node answers eth_chainId with it, so wallets and libraries configured for Merlin Chain work against your endpoint unchanged.
What is the Merlin Chain RPC URL?
Public Merlin Chain RPC URLs from the chain registry that answered our weekly check on chain ID 4200: https://rpc.merlinchain.io. Merlin Chain's official documentation (docs.merlinchain.io) is the reference for its own endpoints. They are shared, rate limited and run by third parties, so they are fine for a wallet and not for an application. A dedicated node gives you a private Merlin Chain RPC URL of your own, on your domain if you want, that nobody else uses.
Is Merlin Chain RPC free?
Yes, public Merlin Chain RPC endpoints are free: the ones that passed our weekly check are listed on this page. They are shared and rate limited, which is fine for a wallet or a test. A dedicated Merlin Chain node is the paid option for an app, bot or indexer, at one fixed monthly price.
What is the best Merlin Chain RPC provider?
It depends on the workload. Check four things: whether the node is single-tenant or shared, whether there are rate limits or credits, whether archive, trace and debug are included, and who answers when it breaks. For a wallet, a free public endpoint is enough. For an app, bot or indexer, a dedicated node with no rate limits avoids the throttling of shared plans. Our comparison pages (argusnodes.com/vs) set us against other providers, with sources.
How do I add Merlin Chain to MetaMask with my own RPC URL?
Add a network manually with the chain ID 4200, the currency symbol BTC and your private Merlin Chain RPC URL in place of the public one. The steps are the same as for a public URL; the difference is that the endpoint is yours alone, so the wallet never hits someone else's rate limit.