BSV Layered Multicast Network
The transport layer for Bitcoin at planetary scale
Cash moves fast. Users always free. · on 1BSV
1BSV moves transactions and blocks to every participant the instant they happen: one signal, heard everywhere, without the waste of flooding the network node by node.
One signal, heard everywhere
Bitcoin still spreads data by gossip: every node re-whispering every message to every other node, with no record of who heard what and no alarm when something is missed. 1BSV replaces that with structured multicast: every transaction and block is sorted into a numbered lane by a rule anyone can verify, sent once, and carried to everyone subscribed.
One send, everyone hears
Enter at the nearest door and a message is emitted a single time, fanning out across the fabric to every interested party. No duplicated floods, no wasted bandwidth.
Nothing slips through
Every stream is numbered and accountable. The moment anything is missing it is detected and repaired; silent loss is impossible.
Engineered for 1B+ tx/s
Capacity grows by spreading load across independent lanes and adding ingress points everywhere. No central bottleneck, no ceiling; the design scales horizontally.
Users always free. Receivers pay for certainty.
Sending costs nothing, ever: no account, no configuration, only the miner's fee. Receiving is the paid service, and it comes in three shapes. Pick the one that fits you.
Run the chain
The settlement side: the full transaction stream, subtree and block data, the earliest possible view of the network, and the right to publish blocks into it. Built for block production at speed, by miners and the processors that assemble blocks.
Build on settlement
The transaction stream and subtree data plus a live header feed, without mining and without the right to publish settlement. The inputs a broadcaster, proof service, wallet backend or explorer builds from, complete and self-repairing.
Serve your users
The overlay side: objects delivered with proofs attached and a live header feed, filtered to the topics your users care about. SPV certainty for everyone you serve, without running mining infrastructure. Built for wallets, exchanges, and services.
Just sending? There is nothing to choose and nothing to pay: hand your transaction to the network and it is carried to everyone. The User Guide covers it in one section.
Open at the core
The deployed network. The open componentry. Built by Lightweb Inc.
1BSV is the production deployment of a layered multicast distribution system engineered and open-sourced by Lightweb Inc. The full protocol is published as open standards anyone can implement and verify: no black box, no vendor lock-in.
Plug into the network
Building something that moves Bitcoin at scale? Let's talk about how 1BSV fits into your infrastructure.
Check who you are talking to: bfinger -header-url woc:main 1bsv@lightweb.net -ansi -l
should show identity key fingerprint SHA256:b2qjtM8q8o2KNkQBHt7LlZ7Wwle6n8mrwgSaIPJGAgg.