Is it Proof-of-Work or Proof-of-Stake?

Is BLK a token or a native coin? Is there a contract address?

What is the "Gold Rush" and the shadow ledger?

What is Migration, and when does it happen?

How do I integrate as an exchange or build on the data?

Where is support? How do I avoid scams?

FREQUENTLY ASKED

Blackcoin Protocol V4, answered.

Straight answers, each pointing to the authoritative source on this site. Everything here is reproducible on your own node — trust nothing, verify everything.

What is Blackcoin Protocol V4?: Blackcoin (ticker BLK) is an established, independent Proof-of-Stake blockchain. Protocol V4 "Quantum Quasar", shipped in the signed-source v30.1.3 release, adds a scheduled accounting overlay (the "Gold Rush"), a post-quantum signature migration path, and new staking rules on top of the full existing chain history from genesis — it is not a new coin, token, or fork of the ledger. See the plain-language overview.
Is it Proof-of-Work or Proof-of-Stake?: Proof-of-Stake. Blackcoin has been PoS for its entire modern history — the last PoW block was height 10,000. Blocks arrive about every 64 seconds. The "Gold Rush" uses an Argon2id transaction-carried shadow claim lane — it is not PoW mining and does not produce blocks. To participate in consensus, run a node and stake.
Is BLK a token or a native coin? Is there a contract address?: BLK is the native coin of its own chain — there is no contract address and it is not an ERC-20/BEP-20 token. Anyone quoting a "BLK contract" on another chain is describing a bridged or fraudulent representation, not native Blackcoin. Canonical parameters are published at /api/chain-params.
What is the max supply?: There is no fixed maximum supply — Blackcoin is Proof-of-Stake, so new coins are emitted as stake rewards rather than capped. The base-chain circulating supply is ~70.5 million BLK; a further ~6.19 million BLK of phase-locked synthetic Gold Rush credit is accounted separately and excluded from circulation until Migration. The live, reconciled figures are at /api/supply and on the explorer.
What is the "Gold Rush" and the shadow ledger?: The Gold Rush is a scheduled Protocol V4 accounting phase that records synthetic crediton a separate shadow ledger, anchored to real base-chain blocks. These credits are phase-locked — they are accounting entries, not spendable balances, deposits, or yield, and they materialize into the base chain only at Migration. Watch it live on the observatory; see terms in the glossary.
What is Migration, and when does it happen?: Migration is the scheduled transition where legacy outputs move to the Protocol V4 model and phase-locked credits are reconciled. It is governed by block heights, not dates: the Gold Rush final block is 6,192,999 and Migration starts at 6,193,000 (the competing-claim rule activates earlier, at 5,993,200). Until an activation height passes, no consensus divergence exists. Plan support on the migration timeline.
Is this "quantum-proof"?: Protocol V4 implements a migration path to ML-DSA-44 (FIPS 204) signatures. That is a migration path — not a claim that this implementation is FIPS-validated, certified, or absolutely secure. Security still depends on source identity, randomness, storage, backups, integration, consensus, and operational evidence. See security.
How do I run a node?: Get the signed-source v30.1.3 binaries from the downloads rail, verify them, then follow the run-a-node guide (per-OS install, blackcoin.conf, staking, ports, and troubleshooting). For an integration sandbox, Keystone boots a node + custody daemon on regtest.
How do I integrate as an exchange or build on the data?: Custody runs against your own blackcoind — see the integration guide and the runnable Keystone reference. For read-only verified data, use the public API (OpenAPI, feeds), the agent/MCP interface, or the explorer. This site is a mirror of the daemon, never a custody or key-holding service.
Where is support? How do I avoid scams?: Only channels listed on the community page are official. Support will never ask for your seed phrase, private keys, or passwords, and moderators never DM first. Report security issues privately per the security policy.