Islamic Finance Principles Assessment
Riba — Does Fiamma BTC involve interest?
Fiamma BTC itself carries no interest-bearing mechanic: it is minted 1:1 against deposited BTC and redeemed 1:1, with no coupon, guaranteed yield, or fixed return attached to holding the token. Revenue instead comes from operator/challenger transaction fees tied to bridge security, which is a service fee model rather than riba. Muslim investors should note that while the base asset appears free of interest, downstream "vault" or APY-labelled products built atop FiaBTC need separate scrutiny.
Assessment: Moderate Riba
Score: 64.5/100
Our methodology examines 10 criteria to evaluate how well Fiamma BTC avoids interest-based mechanisms.
The protocol's disclosed revenue sources are bridge/operator transaction fees and a challenger fee/slashing-style reward for detecting malicious operators — both service-based, not interest on deposited capital. No treasury size, reserve composition, or interest-bearing holdings (e.g., T-bills, money-market instruments) were disclosed in available sources. This absence of disclosure is itself a transparency gap rather than confirmed riba, but it means investors cannot verify that idle BTC reserves backing FIABTC are not parked in yield-bearing instruments elsewhere, which would need independent confirmation before being ruled out entirely.
The core business — a non-custodial BTC bridge minting a redeemable 1:1 wrapped token — does not itself operate a lending or borrowing market. However, marketing references to "borrow against" FiaBTC and APY/APR terminology in the Fiamma One app's terms of service indicate planned or existing yield products whose underlying return mechanism is not detailed in these sources. Until the source of that yield is disclosed as fee-based rather than interest-based, Muslim investors should treat any FiaBTC-linked "yield" or "APY" product with caution and avoid assuming it is automatically riba-free simply because the base token is not.
Gharar — How much uncertainty does Fiamma BTC involve?
Uncertainty here is moderate: the team is named and traceable, the code is open-source, and the token's 1:1 redemption mechanic is simple and verifiable in principle. What increases gharar is the absence of any confirmed, named security audit, undisclosed treasury/reserve details, and governance structures that remain unspecified. On balance, this is a legitimate but still immature and under-disclosed infrastructure project.
Assessment: Moderate Gharar (Material Uncertainty)
Score: 62.6/100
Our methodology examines 15 criteria including team transparency, audit quality, and governance.
Fiamma Labs is a named, Singapore-founded company with identifiable co-founders whose professional backgrounds (Citi IBD, Binance Labs, Huawei, Ping An, ZKSpace, OlaVM) are traceable via LinkedIn, which is a meaningful transparency positive compared to anonymous teams. The bridge codebase and documentation are public on GitHub. However, independent verification of team credentials beyond LinkedIn is limited, governance mechanisms (DAO, voting rights) are undocumented, and testnet validator registration required approval — indicating some current centralisation that reduces the predictability investors might assume from a "decentralised bridge."
No named, dated security audit of Fiamma or FiaBTC could be established in available sources; a Halborn report retrieved in research pertains to an unrelated project, and Halborn's general resource pages do not confirm any Fiamma-specific engagement. This is a material gharar concern for a protocol that custodies bridged BTC via multisig/taproot structures — unaudited bridges have historically been high-risk failure points in crypto. Terms of Service reference APY/APR language without explaining the underlying yield source, compounding disclosure uncertainty around any yield-bearing product built on top of FiaBTC.
Maysir — Does Fiamma BTC involve gambling or speculation?
FIABTC's design — mint on deposit, redeem 1:1 for native BTC — is not structured as a wagering or lottery-style instrument, and it carries no meme-coin speculative framing. The main maysir-adjacent feature is the challenger reward system, which pays variable amounts (up to 1 BTC, framed as up to a 1000x return) for detecting malicious bridge operators. This is a security-incentive bounty rather than a game of chance, and it does not target ordinary FIABTC holders.
Assessment: Minor Maysir (Incidental)
Score: 70.7/100
Our methodology examines 11 criteria to determine whether Fiamma BTC is a gambling instrument or a genuine economic tool.
Fiamma Bridge and FiaBTC serve a genuine, productive function: enabling Bitcoin liquidity to move across chains like Ethereum, Arbitrum, BNB Chain, Base, and others without custodial intermediaries, letting BTC holders access DeFi ecosystems while retaining a 1:1 redemption right back to native BTC. Testnet usage reportedly reached 239,000-300,000+ users and multiple millions of transactions ahead of the August 2025 mainnet launch, suggesting real demand for cross-chain BTC utility rather than purely speculative token circulation. This utility-driven design distinguishes FIABTC from instruments whose primary function is price wagering.
Against this genuine utility, secondary-market trading of any bridged asset can attract short-term speculation, and the "up to 1000x return" framing used for challenger rewards, even though it targets bridge security participants rather than casual holders, risks being marketed or perceived in speculative terms by third parties. Such third-party trading behaviour or promotional framing does not alter FIABTC's own design as a redeemable, utility-based wrapped asset, and should not be read as pushing the instrument itself toward a maysir classification — though it warrants investor caution around associated yield-marketing language.
The Full 27-Point Screening
1. Legitimacy (4 criteria)
| Criterion | Score | Analysis |
|---|
| Team Transparency | 78/100 | Both co-founders are named with verifiable LinkedIn histories and professional credentials in cryptography and finance. |
| Fraud & Scam Risk | 65/100 | No fraud, hack, or rug-pull reports specific to Fiamma appear in the sources, but this is an absence-of-evidence finding rather than a positive clean audit trail. |
| Use Case Legitimacy | 82/100 | The project provides a clearly documented real-world use case: a non-custodial Bitcoin bridge with substantial reported testnet usage. |
| Ethical Practices | 75/100 | The bridge/FiaBTC design itself is neutral infrastructure for moving Bitcoin cross-chain; any lending/borrowing occurs via third-party DeFi apps rather than being inherent to the coin's own design. |
Summary: The founding team is named and professionally credentialed, funded by identifiable investors, with no fraud or regulatory-action reports found in these sources.
2. Project Operations (9 criteria)
| Criterion | Score | Analysis |
|---|
| Core Protocol Business | 80/100 | The core protocol is Bitcoin bridging/interoperability infrastructure, not itself a prohibited sector. |
| Transaction Fees | 62/100 | Fees are charged by bridge operators as flat transaction fees in the one documented example, not framed as interest, but full fee schedules are not disclosed. |
| Treasury Assets | 50/100 (low evidence) | Treasury composition is not disclosed anywhere in the sources, so interest-bearing holdings cannot be confirmed or ruled out. |
| Revenue Model | 63/100 | Revenue appears to come from bridge/operator transaction fees rather than an interest-based lending spread, but this is inferred from limited operational detail. |
| Transparency | 80/100 | Source code and technical documentation are publicly available on GitHub and a dedicated docs site. |
| Governance | 40/100 | No DAO or token-governance structure is described, and testnet validator onboarding required approval, suggesting a currently centralised setup. |
| Launch Fairness | 62/100 | FIABTC is minted on BTC deposit rather than pre-sold, which suggests a structurally fair issuance, though no explicit launch-fairness statement exists in the sources. |
| Token Distribution | 68/100 | No team/insider pre-allocation of FIABTC is described; supply is generated 1:1 against deposited BTC, implying broad, demand-driven distribution, but this is inferred. |
| Speculation/Utility Ratio | 78/100 | FIABTC's stated purpose is DeFi utility for Bitcoin holders (bridging, collateral, cross-chain use) rather than speculative trading as an end in itself. |
Summary: Fiamma operates a documented, open-source, non-custodial Bitcoin bridge minting a 1:1 pegged FiaBTC token, though its governance and fee/treasury details remain only partially disclosed.
3. Financial Health (4 criteria)
| Criterion | Score | Analysis |
|---|
| Protocol Revenue | 63/100 | Protocol revenue appears fee-based rather than interest-based, but the underlying fee model is only partially documented. |
| Financial Status | 50/100 | Usage metrics (testnet users/transactions) are known, but no financial statements, treasury size, or stability data are disclosed. |
| Interest Assessment | 60/100 | The bridge/FiaBTC mechanism itself does not natively run a lending/borrowing engine, though marketing language about "borrowing" and "yield" blurs the boundary with third-party DeFi. |
| Audit Quality | 20/100 | No audit specifically covering Fiamma or FiaBTC could be found; the only Halborn report retrieved concerns an unrelated project, indicating no verifiable audit in these sources. |
Summary: The bridge generates fee-based revenue and shows real testnet/mainnet usage, but no audit specific to Fiamma or FiaBTC and no treasury/financial disclosures could be located in these sources.
4. Token Economics (5 criteria)
| Criterion | Score | Analysis |
|---|
| Token Purpose | 82/100 | FIABTC is designed and documented as a 1:1 wrapped Bitcoin utility token, not a meme token. |
| Governance Rights | N/A | No governance rights are described for FIABTC holders, which is a neutral, expected feature of a wrapped-asset token rather than a red flag. |
| Rewards Distribution | 50/100 | Reward mechanics described (operator fees, challenger rewards) apply to bridge participants rather than to ordinary FIABTC holders, and no direct holder reward scheme is documented. |
| Speculation Controls | 60/100 | The 1:1 redemption peg to native BTC functions as an implicit anti-speculation control by limiting price divergence, though no explicit speculation-control policy is stated. |
| Asset Backing | 88/100 | FIABTC is explicitly stated to be backed 1:1 by native BTC held in a multisig/taproot structure and redeemable at any time. |
Summary: FIABTC functions as a utility-oriented, BTC-backed wrapped token rather than a governance or meme token, with reward mechanics concentrated at the bridge-operator level rather than for passive holders.
5. Staking Mechanism
Fiamma BTC has no native staking mechanism, so these five criteria are not applicable and are excluded from the score entirely rather than counted as zeros.
Overall Assessment: Fiamma BTC presents as a genuine, traceable Bitcoin-bridging infrastructure project with BTC-backed token design, but gaps in audit confirmation, treasury disclosure, and governance detail leave several Shariah-relevant questions unresolved on the available evidence.
Written by ThanvirFounder, Ex Director S&P Global Energy
Reviewed by Imam Omar SiddiqiShariah Scholar