OVERVIEW / PLAIN LANGUAGE
What is Blackcoin Protocol V4?
Blackcoin (BLK) is an established, independent Proof-of-Stake cryptocurrency with a full history going back to its genesis block. Protocol V4 "Quantum Quasar" — shipped in the signed-source v30.1.3 release — is an upgrade layered on top of that existing chain. It is not a new coin, a token, or a fork of the ledger.
What Protocol V4 adds
- The Gold Rush. A scheduled accounting phase that records synthetic credit on a separate "shadow" ledger, anchored to real blocks. This credit is phase-locked — it is accounting, not a spendable balance, deposit, or yield — and it reconciles into the base chain at Migration.
- A post-quantum migration path. A route to ML-DSA-44 (FIPS 204) signatures. A migration path — not a claim of certification or absolute security.
- New staking rules. Quantum cold-stake (owner/staker separation) and tiered staking via new output types, with scheduled activation heights.
What this site is
projectblackcoin.org is a fail-closed, quorum-verified mirror of the Blackcoin daemon — a way to watch and verify the chain, not to hold funds. It never creates addresses, holds keys, or takes custody. Everything it shows is reproducible on your own node.
- Watch it live: the observatory and explorer.
- Build on it: the public API, the agent / MCP interface, and per-address feeds.
- Run it: the node guide, then verify every download.
- Integrate custody: the integration guide and the runnable Keystone reference.
The essentials
- Ticker: BLK · native coin of its own chain (no contract address).
- Consensus: Proof-of-Stake · ~64-second blocks.
- Supply: no fixed cap (PoS emission); ~70.5M BLK base-chain circulating, plus phase-locked Gold Rush credit accounted separately — live at /api/supply.
- Release: v30.1.3, signed-source production. Canonical parameters at /api/chain-params.
- Timing: heights control, not dates — the Gold Rush ends at block 6,192,999 and Migration starts at 6,193,000. See the timeline.
New to the terms? Start with the FAQ and the glossary. Reading the full spec? The whitepaper is on-site (with a PDF).