Blockparty

The non-custodial alternative to multisig hashrate rentals — co-fund Bitcoin mining with friends, split every block on-chain by a fixed percentage agreed up front, each member's cut lands directly in the coinbase.

Blockparty is a non-custodial co-rental for Bitcoin mining: a directed group of BTC addresses shares the cost of a hashpower rental, and every block found is split on-chain by fixed percentages every member signed off on up front. Each member contributes to a single rental-administrator address; the rented miners point at that address; when a block is found, the coinbase carries one output per member with their fixed cut — same block, same transaction, straight to each member's own wallet. Unlike Group-Solo, splits are NOT proportional to work — they're fixed percentages every member signs off on before the party goes live.

Fixed %, not pro-rata. Each member's share is a basis-point value summing to 100 % of the miner cut. Splits can only be edited by the admin while the party is still gathering confirmations; every affected member then has to re-confirm with their member token before the party can go live. Once active, the splits are frozen for the lifetime of the party.

The old way vs Blockparty Traditionally a group splitting a hashrate rental had to (1) set up a 2-of-N multisig wallet, (2) point the rental at it, (3) wait for blocks — mining proceeds accumulate in the multisig, (4) manually trigger payouts signed by N participants for every disbursement, and (5) keep a spreadsheet so everyone can audit their cut. Blockparty removes all five steps. Members sign off on basis-point percentages once; every block found pays them directly into their own wallets via the coinbase transaction. No shared wallet, no manual signing rounds, no bookkeeping — the on-chain history is the audit trail.

Rentals built-in The admin dashboard has a Braiins quick-rental widget — pick a budget and duration, place the order, and the rented hashpower lands on this party's address automatically. External rental providers (Mining Rig Rentals, NiceHash, anyone else) work too: point them at the admin BTC address on port 3339 and you're in.

Pool fee Currently 1.5 % of every block's reward goes to the pool operator, deducted from the miner cut before the coinbase is built. Settable by the admin — value above is pulled live.

When it fits

Predictable payouts — every member knows their cut in basis points before the party starts
Rent-and-split workflow built-in — pay one bill, receive on-chain payouts split automatically
Single port for everything — 3339 carries SV1 + SV2, rental-compatible by default

What to know

Pool fee (1.5 %) applies, same as PPLNS / Group-Solo
Member changes lock the party until everyone re-confirms — small parties only
Dissolve is rate-limited (7-day cooldown) so admins can't yank rentals mid-flight

How to start

Create a Blockparty from your dashboard, invite members by BTC address (each must first bind + verify an email), set the splits in basis points, and have every member re-confirm with their member token. Then either order a Braiins rental from the same admin page or share the address+port with any external rental marketplace. Coinbase outputs land in-block.

Connection

High-difficulty (start diff 1M, for mining rentals)stratum+tcp://blitzpool.yourdevice.ch:3339

Single port for both regular miners and external rental providers (Mining Rig Rentals, NiceHash, …). Auto-negotiates SV1 and SV2 on the same socket.

Stratum V2 is auto-negotiated on the same port — no separate endpoint.