Independent Public Bitcoin Full Node

Q: How do I connect to BTC21?

Add btc21.cc:8333 as a peer in Bitcoin Core, or use the Tor v3 onion address for private routing.

This node is running Bitcoin Core —

Institutional adoption doesn't mean giving up base-layer sovereignty. BTC21 provides dedicated bare-metal infrastructure to inspect the ledger, verify transactions, and bridge the gap between traditional capital and self-custody. Privacy-first Bitcoin infrastructure operated as an uncompromised community utility.

Capital & Treasury Layer

Bitcoin / USD

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BTC spot reference

Strategy · MSTR

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Common stock · USD

Strategy · STRC

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Preferred stock · USD

STRC Effective Yield

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Variable annualized yield

Base-Layer Sovereign Utilities

Live Block Explorer explorer.btc21.cc ↗

Independent ledger inspection · Zero trackers · Bare-metal mempool

Wallet Connector · Electrum Service electrum.btc21.cc ↗

Independent Electrum endpoint · Connect compatible wallets over TLS or Tor

Bitcoin Wallet Basics self-custody guide →

Choose a wallet · Protect recovery words · Connect privately with BTC21

Public Bitcoin Infrastructure for the Community

BTC21 runs Bitcoin Core on dedicated bare-metal infrastructure in a data center. It keeps a complete archival copy of the Bitcoin blockchain, validates blocks and transactions independently, and accepts peer connections from other Bitcoin nodes over clearnet and Tor. In plain English, BTC21 checks Bitcoin’s rules itself instead of simply trusting another service’s answer, while retaining the ledger’s full history. This project is operated as a free community contribution. The live dashboard publishes useful, non-custodial network information: chain state, block height, synchronization progress, connected peers, and mempool activity.

How do I connect to BTC21?

Add btc21.cc:8333 as a peer in Bitcoin Core, or use the Tor v3 address shown below for an onion connection.

Is BTC21 a wallet or exchange?

No. BTC21 does not hold funds, provide custody, or publish wallet information. The raw transaction relay is a network utility, not a wallet service.

What does archival node mean?

An unpruned full node retains historical blockchain data instead of deleting old blocks, helping peers that need to verify or retrieve the chain from earlier heights.

Why track institutional equities like MSTR and STRC on a Bitcoin node?

Bitcoin is now an integral component of corporate balance sheets and institutional finance. Tracking capital vehicles alongside base-layer metrics reflects the reality of global adoption while emphasizing that the true value of any derivative or treasury holding still relies entirely on base-layer consensus and verification.

Do I need to be an engineer or cypherpunk to use BTC21?

No. BTC21 provides a clean, ad-free window into the live mempool and blockchain state so anyone—from institutional allocators to everyday self-custodians—can verify network truth without running complex local hardware.

Connect & Peer with BTC21

Dedicated bare-metal archival node with 1,000 peer slots, BIP324 encrypted P2P transport, and compact block filters.

Clearnet (IPv4 / IPv6)

btc21.cc:8333

Tor v3 Onion

2hi75…o7fhfdxtad.onion:8333

BIP324 (P2P v2 Encrypted) BIP157/158 Compact Filters Full Archival (prune=0) Full txindex=1 Full-RBF Enabled 2 GB Mempool Capacity 1,000 Peer Capacity

Node status

Checking…

Block height

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Connected peers

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Live Map

Mempool

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Chain

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Sync progress

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Broadcast Raw Transaction

Privately relay a fully signed transaction directly into the Bitcoin mempool without third-party tracking. BTC21 uses no Google Analytics, advertising pixels, tracking scripts, or site-set cookies, and does not profile users or follow visitors. Standard server and abuse-prevention logs may temporarily record connection details, including IP addresses, to operate and protect the service. A cypherpunk proof-of-work anti-spam filter protects this service; automated or abusive submissions may be rejected and blocked.

⚡ Instant PoW anti-spam ticket · Automated bot floods will be blocked and IPs added to a ban list.

Use at your own risk. BTC21 makes no promise that a transaction will be accepted, relayed, mined, or confirmed, and assumes no responsibility for failed broadcasts, delays, fees, loss, or other consequences. Verify the transaction independently using another node or block explorer. Paste only a fully signed raw transaction—never enter a seed phrase, private key, or wallet credentials.
By broadcasting a transaction, you understand and accept these risks.

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