BLACKCOIN BLACKCOIN
Quick Answer

Is BLACKCOIN halal?

BLACKCOIN is classified as doubtful (mashbooh), with a Shariah compliance score of 55.1/100 under our 27-point screening methodology.

Overall55.1Mashbooh · Doubtful · Risky
Riba55.5Mashbooh
Gharar54.3Mashbooh
Maysir55.5Mashbooh
55.155.5RIBA54.3GHARAR55.5MAYSIR
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GhararSharia pillar · 54.3/100 · Review · 15 criteria

Mashbooh. Prohibition of contracts with excessive ambiguity or hidden risk.

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Team Transparency & Credibility55
Ethical Practices85
Transparency85
Governance55
Launch Fairness65
Token Distribution50
Speculation / Utility Ratio45
Financial Status40
Audit Quality20
Governance Rights100
Rewards Distribution50
Asset Backing40
Mechanism Type60
Documentation70
Shariah Alignment40
How BLACKCOIN compares
Ycash
73.5
Particl
72
Nockchain
69.1
MinoTari (Tari)
68.6
BLACKCOIN (BLACKCOIN)
55.1

Compare directly: vs Ycash · vs Particl · vs Nockchain

Purify your profits from BLACKCOIN

A portion of profit from BLACKCOIN isn't fully yours to keep — here's how to return it

What does "purification" mean?

Even fully screened assets can pick up small amounts of tainted income along the way — purification means giving that specific portion back, not paying extra.

Based on BLACKCOIN's riba, gharar and maysir screening — see how we calculate purification amounts.

Overseen by Imam Omar Siddiqi, Shariah scholar and Imam of JMIC, among others, with donations paid directly to Jamiya Masjid & Islamic Centre — UK registered charity no. 1089986. Sent wallet-to-wallet; CryptoUmmah never custodies your funds. Always verify the destination address before confirming in your wallet.

Mashbooh · Doubtful · Risky

Your exact purification amount, calculated from BLACKCOIN's Shariah compliance score.

$
Amount to return0.00 USDC

to Jamiya Masjid & Islamic Centre, a registered UK charity

Purification isn't Zakat and isn't tax-deductible — it's the return of income that wasn't rightfully yours.

Scholar-verified · UK registered charity
Key facts
ChainSolana
Last reviewed
Analyst summary

BlackCoin (BLK), launched in 2014, was the first pure proof-of-stake payment coin, and its base protocol rewards stakers via ~1% annual coin issuance rather than a lending or fee-distribution scheme. No named audit firm or public audit report for BlackCoin's codebase appears anywhere in available sources, and 24-hour trading volume sits near just $32,350 across five markets, signalling thin liquidity. The single biggest Shariah consideration is this combination of an unaudited codebase and weak market adoption: the reward mechanism itself is structurally sound, but verifiability and real-world use remain unresolved.

The research

27-point Shariah breakdown of BLACKCOIN

Islamic Finance Principles Assessment

Riba — Does BLACKCOIN involve interest?

BlackCoin's base protocol shows no interest-bearing lending, treasury yield-farming, or debt instruments; it functions purely as a peer-to-peer payments currency. Staking rewards derive from new-coin issuance tied to consensus participation, not from a fixed interest rate on deposited capital. For Muslim investors, the reward structure itself does not resemble riba, though variable secondary-source terminology around "interest" warrants a cautious read of any promotional material.

Assessment: Moderate Riba Score: 55.5/100

Our methodology examines 10 criteria to evaluate how well BLACKCOIN avoids interest-based mechanisms.

No sources describe BlackCoin as generating protocol-level revenue from trading fees, treasury investments, or interest-bearing holdings. It operates as a currency network rather than a platform earning fees for a treasury or foundation. There is no evidence of BLK reserves being placed into interest-bearing instruments, money-market products, or conventional lending arrangements. The absence of a described treasury or revenue model at all means there is no riba-based income stream to evaluate on the revenue side; the reward economics instead flow entirely through the staking/issuance mechanism discussed separately.

BlackCoin's staking rewards are variable, not fixed: a wallet's chance of winning a block reward is proportional to its coin-weighted stake, funded by roughly 1% annual new-coin issuance (one lower-quality source cites a wider 1-8% range, an inconsistency worth noting). This performance/probability-linked structure, tied to network participation rather than a guaranteed contractual return on lent capital, resembles a mining-like reward rather than riba. One weaker source's use of "interest" language appears to be a terminology error rather than evidence of an actual interest-bearing product.


Gharar — How much uncertainty does BLACKCOIN involve?

BlackCoin carries moderate uncertainty: its consensus design and open-source code are well documented, but its founding team's pseudonymity and the total absence of any named security audit leave real gaps. Thin trading volume adds market-level uncertainty on top of protocol-level unknowns. Overall, informed investors can assess the mechanics reasonably well, but unaudited code is a genuine, unresolved gharar concern.

Assessment: Moderate Gharar (Material Uncertainty) Score: 54.3/100

Our methodology examines 15 criteria including team transparency, audit quality, and governance.

BlackCoin was founded by pseudonymous developer Rat4, with early contributors like Soepkip, maarx, Gritt N. Auld and Evan Zenker named only in an investor handout. Co-founder Joshua J. Bouw is publicly identifiable and has advised other blockchain projects, adding some credibility. A current ecosystem page names development leads such as Lateminer, Michel van Kessel, and Daniel Clough alongside pseudonymous contributors. The code itself is fully open-source with public GitHub repositories and style documentation, which meaningfully offsets the founder-identity gap and supports transparency at the protocol level.

Multiple public whitepapers cover BlackCoin's proof-of-stake protocol versions 2, 3, and 3.1, giving reasonably thorough technical documentation of consensus mechanics. However, no named security audit firm, audit date, or public audit report for BlackCoin's codebase appears in available sources; audit references found elsewhere concern entirely unrelated projects. This is a plain, material gharar concern: an unaudited fourteen-year-old codebase handling real value carries unverified technical risk that documentation alone cannot resolve.


Maysir — Does BLACKCOIN involve gambling or speculation?

BlackCoin is not designed as a gambling or speculative-payout mechanism; it is a payments-oriented, proof-of-stake currency with genuine, if modest, utility. Its rewards come from network security participation rather than chance-based payout schemes. The main maysir-adjacent concern lies in secondary-market trading behaviour rather than the protocol's own design.

Assessment: Moderate Maysir (High Risk) Score: 55.5/100

Our methodology examines 11 criteria to determine whether BLACKCOIN is a gambling instrument or a genuine economic tool.

BlackCoin was built and marketed as a functional medium of exchange, explicitly distinguishing itself from proof-of-work coins on energy efficiency while retaining a decade-plus operating history since 2014. Its staking mechanism ties rewards to actual network-securing participation, not to chance-based games or lottery-style payouts. This productive, consensus-linked design is the key feature separating it from maysir: value transfer occurs through genuine currency-network function and stake-weighted security contribution rather than zero-sum wagering.

Against this genuine utility, adoption remains aspirational: a 2025 community post explicitly calls for BlackCoin to "create real-world use cases," and 24-hour trading volume of roughly $32,350 across five markets suggests activity is thin and potentially dominated by speculative flipping rather than payment use. Such secondary-market speculation, however, reflects investor behavior rather than the coin's own design, and per the guiding principle it should not by itself push the protocol toward a maysir classification. Caution on adoption maturity is nonetheless warranted for prospective investors.


The Full 27-Point Screening

1. Legitimacy (4 criteria)

CriterionScoreAnalysis
Team Transparency55/100Some team members and co-founders are named or pseudonymously identifiable with public profiles, but the lead founder (Rat4) remains pseudonymous and unverifiable.
Fraud & Scam Risk65/100No fraud, hack, or rug-pull reports against BlackCoin itself appear in these sources, but this is inferred from absence of adverse findings rather than an explicit clean bill.
Use Case Legitimacy50/100The protocol is designed as a payments currency, but a 2025 community call explicitly asks for real-world use cases to be built, indicating limited actual adoption.
Ethical Practices85/100Nothing in the sources ties BlackCoin's own design to a prohibited industry; it is described purely as a generic payments currency.

Summary: BlackCoin has a partially named, long-running founding team with no evidence of fraud in these sources, though its original lead developer remains pseudonymous and current real-world adoption is still being actively solicited by its community.


2. Project Operations (9 criteria)

CriterionScoreAnalysis
Core Protocol Business85/100Sources describe the base protocol as a peer-to-peer digital currency and payments network, a sector with no inherent Shariah prohibition.
Transaction Fees50/100 (low evidence)The sources do not describe how transaction fees are handled (burned, retained, or distributed) on the BlackCoin network.
Treasury Assets50/100 (low evidence)No information on treasury composition or holdings is given in these sources.
Revenue Model75/100The protocol has no described fee/lending revenue model, which suggests no interest-based revenue, but this is inferred rather than confirmed.
Transparency85/100BlackCoin is explicitly stated to be open-source with a public GitHub repository and documentation practices.
Governance55/100Sources claim no single entity owns BlackCoin, but a small named group of core developers appears concentrated in technical control.
Launch Fairness65/100Historical accounts describe an organic 2014 forum launch without mention of private sales, though no explicit pre-mine disclosure is given either way.
Token Distribution50/100 (low evidence)No specific token distribution percentages, allocations, or vesting schedule for BLK are found in these sources.
Speculation/Utility Ratio45/100Current trading volume is very thin (~$32K/24h), and the community itself acknowledges the need to build real utility, suggesting speculation currently outweighs demonstrated use.

Summary: The base protocol is an open-source proof-of-stake payments currency with no described fee-burn or treasury details, community-claimed decentralization, and no confirmable data on its original token distribution or pre-mine fairness.


3. Financial Health (4 criteria)

CriterionScoreAnalysis
Protocol Revenue75/100No lending or interest-based revenue model is described for the protocol; rewards derive from coin issuance rather than riba-type income.
Financial Status40/100CoinMarketCap data shows very low trading volume and market activity, indicating financial fragility rather than stability.
Interest Assessment55/100The base protocol's only reward mechanism is PoS issuance, not lending/borrowing, though one secondary source uses ambiguous "interest" language that muddies this.
Audit Quality20/100 (low evidence)No named security audit firm, date, or report for BlackCoin's own codebase could be found in these sources, despite audit references existing for many unrelated projects.

Summary: BlackCoin shows thin trading volume and no protocol-level lending/interest revenue, its only native yield being proof-of-stake issuance, and no security audit of its codebase could be found in the sources.


4. Token Economics (5 criteria)

CriterionScoreAnalysis
Token Purpose70/100BLK is presented as a functional currency/utility token for payments rather than a coin designed purely as a meme or joke.
Governance RightsN/ABlackCoin does not appear to implement formal token-holder governance rights; as a simple payments currency this absence is not itself a Shariah concern.
Rewards Distribution50/100Staking rewards come from network issuance at a stated ~1% annual rate (with one source citing a wider 1–8% range), a semi-fixed inflationary schedule rather than a purely performance-based variable reward.
Speculation Controls25/100 (low evidence)No anti-speculation mechanisms are described anywhere in these sources.
Asset Backing40/100The token is not backed by external reserves; its value is described as deriving from network utility and scarcity as "commodity money," which is a weaker basis than direct asset backing.

Summary: BLK functions as a utility/payments token with inflation-funded staking rewards and no formal governance rights, anti-speculation controls, or external asset backing described in the sources.


5. Staking Mechanism (5 criteria)

CriterionScoreAnalysis
Mechanism Type60/100Staking is described as direct and non-custodial, requiring the holder's own wallet to remain unlocked, rather than delegated or pooled through a third party.
Islamic Contract Classification35/100Reward terminology is inconsistent across sources, with one describing staking returns as "interest," leaving the underlying Islamic contract classification (issuance-based reward vs. interest-like increment) unresolved.
Rewards Structure40/100Rewards are generated by a stated fixed annual inflation rate tied to stake weight rather than variable income from real economic activity.
Documentation70/100Multiple public whitepapers (PoS v2, v3, v3.1) document the staking protocol's technical mechanics in detail.
Shariah Alignment40/100The unresolved question of whether the issuance-based staking reward functions like an interest increment (as one source's language suggests) leaves a live Shariah classification concern.

Summary: BlackCoin offers a direct, non-custodial proof-of-stake mechanism with rewards from fixed-rate coin issuance, reasonably documented technically but with an unresolved and inconsistently described relationship to interest-like terminology.


Overall Assessment: BlackCoin appears to be a genuine, long-standing proof-of-stake currency project rather than a meme coin, but gaps in audit evidence, distribution transparency, and clarity around the Islamic classification of its staking reward leave several compliance questions open rather than resolved.

Sources consulted