BitTorrent (BTT) Cryptocurrency: Comprehensive Overview
Core Definition and Technology
BitTorrent Token (BTT) is a utility token native to the BitTorrent ecosystem, designed to incentivize and facilitate peer-to-peer file sharing and bandwidth distribution across the world's largest decentralized file-sharing protocol. The token operates as the primary mechanism for rewarding users who contribute resources to the network while enabling micropayments for bandwidth consumption and decentralized storage services.
The BitTorrent protocol itself was invented by Bram Cohen and released in April 2001, revolutionizing how large files are distributed across the internet. The protocol introduced a "tit-for-tat" incentive mechanism that rewarded users who uploaded data while downloading, solving the classic free-rider problem in peer-to-peer networks. By its peak, BitTorrent accounted for an estimated 25-35% of all global internet traffic and maintains over 2 billion users globally with 200+ million active wallets today.
Blockchain Architecture and Network Infrastructure
Multi-Blockchain Deployment
BTT operates across multiple blockchain networks, providing cross-chain accessibility and flexibility:
| Blockchain | Contract Address | Token Standard | Purpose | |
|---|---|---|---|---|
| TRON | TAFjULxiVgT4qWk6UZwjqwZXTSaGaqnVp4 | TRC-20 | Primary network, low-cost transactions | |
| Ethereum | 0xc669928185dbce49d2230cc9b0979be6dc797957 | ERC-20 | Multi-chain liquidity | |
| Binance Smart Chain | 0x352cb5e19b12fc216548a2677bd0fce83bae434b | BEP-20 | Alternative trading venue | |
| BitTorrent Chain (BTTC) | 0x0000000000000000000000000000000000001010 | Native | Layer-1 scaling solution | |
| Energi | 0xf1bdcf2d4163adf9554111439dabdd6f18ff9ba7 | ERC-20 | Extended ecosystem support |
BitTorrent Chain (BTTC) — Layer-1 Scaling Solution
In December 2021, BitTorrent launched BitTorrent Chain (BTTC), a heterogeneous cross-chain interoperability protocol and Layer-1 blockchain designed to address scalability limitations. BTTC achieves significant performance improvements over traditional Layer-1 solutions:
- Transaction throughput: Up to 7,000 transactions per second
- Block time: 2-3 seconds for near-instant finality
- Average gas fees: Below $0.01 per transaction
- Cross-chain bridges: Seamless asset transfers across TRON, Ethereum, and BNB Chain
- EVM compatibility: Full Ethereum Virtual Machine compatibility enabling DApp portability
The PoS Bridge mechanism facilitates token transfers with deposit timeframes of 7-8 minutes from TRON to BTTC and withdrawal timeframes of approximately 30 minutes for reverse transfers. Tokens leaving TRON are locked while equivalent mapped tokens are minted on BTTC, preserving total circulation without creating or destroying tokens.
Consensus Mechanism and Network Security
BitTorrent employs a Delegated Proof-of-Stake (DPoS) consensus mechanism inherited from the TRON network. Super Representatives stake BTT tokens to produce blocks and validate transactions, securing the network while earning BTT rewards. This approach prioritizes transaction speed and cost-efficiency over maximum decentralization, making it practical for high-frequency, low-value applications.
BTTC utilizes a modified version of Cosmos' Tendermint protocol with independent validators staking BTT tokens. Validators are selected through an on-chain auction process and serve as either block producers or verifiers. The PoS mechanism ensures network security through economic incentives while promoting energy efficiency compared to Proof-of-Work systems.
Current Network Security Metrics (March 2026):
- Active validators: 12 securing the network
- Staked supply: Approximately 45.7 billion BTT (4.57% of circulating supply)
- Validator slashing: Penalties apply for misbehavior or prolonged downtime
- Checkpoint rewards: Validators earn proportional rewards for verifying blocks
Tokenomics: Supply, Distribution, and Mechanics
Total and Circulating Supply
BitTorrent maintains a total supply of 990 trillion BTT tokens, established following a significant redenomination in December 2021. As of March 2026, the circulating supply stands at approximately 987.04 trillion BTT, representing 99.6% of total supply in active circulation. Only approximately 2.96 trillion BTT remain unreleased, reflecting the project's mature distribution phase.
The massive token supply reflects BTT's design as a utility token for micropayments and bandwidth incentives. The extremely low per-token price ($0.0000003386 USD as of March 1, 2026) enables granular transactions within the BitTorrent ecosystem while maintaining high liquidity across exchanges.
Token Distribution Breakdown
The original allocation structure, established at the token's inception in 2019, distributes the 990 trillion token supply across nine distinct categories:
| Allocation Category | Percentage | Total Tokens | Purpose | |
|---|---|---|---|---|
| Public Sale | 6% | 59.4 trillion BTT | Binance Launchpad ICO (January 28, 2019) | |
| Private Sale | 2% | 19.8 trillion BTT | Early institutional investors | |
| Seed Sale | 9% | 89.1 trillion BTT | Seed-stage funding round | |
| TRON Foundation | 20% | 198 trillion BTT | Strategic reserve and ecosystem support | |
| BitTorrent Team & Foundation | 19% | 188.1 trillion BTT | Development and operations | |
| BitTorrent Ecosystem | 19.9% | 197.01 trillion BTT | Ecosystem development and incentives | |
| TRON Holder Airdrops | 10.1% | 99.99 trillion BTT | Distributed over 6 years (2019-2025) | |
| BitTorrent Protocol Airdrops | 10% | 99 trillion BTT | Network participation rewards | |
| Partnerships | 4% | 39.6 trillion BTT | Strategic partnerships and integrations |
The public sale on Binance Launchpad in January 2019 raised approximately $7.2 million in under 15 minutes, demonstrating strong early market interest. The distribution structure allocates 39% to the TRON Foundation and BitTorrent team, 19.9% to ecosystem development, and 30.1% to public and private sales, creating a balanced incentive structure between core development and community participation.
Redenomination and Supply Evolution
In December 2021, BitTorrent implemented a critical redenomination as part of the BitTorrent Chain mainnet launch. The original BTT token on the TRON network underwent a 1:1000 redenomination ratio, converting the previous 990 billion token supply to 990 trillion tokens. This restructuring served multiple strategic purposes:
- Improved microtransaction capability: The increased supply enabled smaller denominations for everyday transactions within the BitTorrent ecosystem
- Enhanced liquidity: Larger token quantities improved trading liquidity and reduced price volatility per unit
- Legacy token distinction: Original BTT tokens were renamed BTTOLD to distinguish them from the new BTT tokens on BitTorrent Chain
- Cross-chain compatibility: The new supply structure aligned with BTTC's design for multi-chain operations
The redenomination was completed across major exchanges by April 2022, with platforms like Poloniex and CEX.IO handling automatic conversions for users. This represents a 228% increase in total supply from the original 990 billion tokens, fundamentally restructuring the token's utility model.
Inflation and Deflation Mechanics
BitTorrent's tokenomics evolved significantly with the BTTC 2.0 upgrade launched in June 2025, introducing deflationary mechanisms to address long-term sustainability:
Deflationary Features:
- Network fee burning: A portion of transaction fees on BTTC are permanently burned, gradually reducing circulating supply
- Scaled emission reduction: New token emissions are being progressively reduced to control inflation
- Long-term scarcity model: The deflationary approach aims to support long-term value appreciation through supply contraction
Inflationary Characteristics:
- Gradual release schedule: Remaining unreleased tokens (approximately 2.96 trillion) are released over a phased schedule extending through 2029
- Airdrop distributions: Ongoing airdrops to TRON holders and BitTorrent protocol participants continued through 2025
- No hard cap enforcement: Unlike Bitcoin's 21 million cap, BTT lacks a strict maximum supply ceiling, though the 990 trillion figure serves as the practical limit
The shift toward deflationary mechanics represents a strategic pivot from the original inflationary model. By burning transaction fees and reducing emissions, the project aims to create upward supply pressure while maintaining utility-driven demand through ecosystem adoption.
Staking Rewards and Network Incentives
BitTorrent Chain implements a Proof-of-Stake consensus model with integrated staking rewards designed to incentivize network participation:
Current Staking Parameters (March 2026):
- Staking APY: 6.77% - 7.01% annual percentage yield
- Staked supply: Approximately 45.7 billion BTT (4.57% of circulating supply) locked in staking
- Validator participation: 12 active validators securing the network
- Reward distribution: Validators and nominators earn proportional rewards based on staked amounts
The 6.77% APY serves dual purposes: it incentivizes token lockup to reduce sell pressure while compensating validators for network security services. This staking mechanism creates a sustainable economic model where network participants are rewarded for securing the infrastructure.
Token Burn Mechanisms
BitTorrent has implemented periodic token burn mechanisms to manage inflation and support long-term scarcity:
- Transaction fee burns: A portion of network fees on BTTC are sent to dead wallets (inaccessible addresses), permanently removing tokens from circulation
- Periodic burns: The project has conducted periodic token burns to reduce total supply and manage inflation pressure
- Burn transparency: Burned tokens are verifiable on-chain through dead wallet addresses on TRON and BTTC explorers
These burn mechanisms work in conjunction with the deflationary features introduced in BTTC 2.0, creating a multi-layered approach to supply management that contrasts with the original inflationary design.
Founding Team, Key Developers, and Project History
Bram Cohen — Original Protocol Creator
Bram Cohen is the inventor of the BitTorrent peer-to-peer file-sharing protocol, which he designed and released in April 2001. A self-taught programmer with a background in computer science, Cohen developed the protocol while working independently after leaving MojoNation, an earlier distributed computing project. The BitTorrent protocol introduced a revolutionary "tit-for-tat" incentive mechanism that solved the classic free-rider problem in peer-to-peer networks.
Cohen co-founded BitTorrent, Inc. in 2004 alongside Ashwin Navin, formalizing the commercial entity around the open-source protocol. Under his technical leadership, BitTorrent grew to become one of the most widely used internet protocols in history. Cohen served as CEO of BitTorrent, Inc. until 2017, when he departed to found Chia Network, a blockchain project built around a "Proof of Space and Time" consensus mechanism designed as an energy-efficient alternative to Bitcoin's Proof of Work. Cohen has had no involvement in the BTT cryptocurrency project.
Ashwin Navin — Co-Founder, BitTorrent, Inc.
Ashwin Navin co-founded BitTorrent, Inc. with Bram Cohen in 2004 and served as the company's President. Navin was instrumental in building the business side of the organization, negotiating content licensing deals with major Hollywood studios and establishing BitTorrent as a legitimate content distribution platform. He departed the company in 2010 and subsequently founded Samba TV, a television data analytics company. Like Cohen, Navin has had no involvement in the BTT token or TRON-era BitTorrent operations.
Justin Sun — Acquirer and Strategic Director
Justin Sun is the founder of the TRON blockchain network and the central figure behind the 2018 acquisition of BitTorrent, Inc. Born in 1990 in Xining, China, Sun studied at Peking University and later earned a master's degree from the University of Pennsylvania. He was selected as a Davos Global Shaper by the World Economic Forum and served as the Greater China representative for Ripple (XRP) before founding TRON in 2017.
Sun orchestrated the acquisition of BitTorrent, Inc. in June 2018 for a reported price of approximately $140 million USD, making it one of the largest acquisitions of a decentralized technology company at that time. The deal was executed through the TRON Foundation and gave TRON control over BitTorrent's technology, brand, and its then-100+ million active user base. Sun's stated strategic vision was to integrate BitTorrent's massive peer-to-peer network with the TRON blockchain to create decentralized internet infrastructure.
Sun has served as the CEO of the TRON Foundation and has been the primary public face of both TRON and the BTT token since the acquisition. He has also served as Grenada's Ambassador to the World Trade Organization (WTO), a diplomatic appointment made in 2021.
The TRON Foundation and Development Team
The TRON Foundation, established in Singapore in 2017 by Justin Sun, assumed operational control of BitTorrent, Inc. following the 2018 acquisition. The Foundation oversees the development of the TRON blockchain and coordinates the broader TRON ecosystem, which includes BitTorrent as a flagship decentralized application.
The TRON Foundation launched BTT through a Binance Launchpad Initial Exchange Offering (IEO) on January 28, 2019, raising approximately $7.2 million in under 15 minutes. Following the acquisition, BitTorrent's engineering team, based primarily in San Francisco, continued development of the BitTorrent client software and the BitTorrent Speed protocol. The technical integration of blockchain incentives into the BitTorrent client was led by engineers within BitTorrent, Inc. working in coordination with TRON's development team.
In December 2021, BitTorrent launched BitTorrent Chain (BTTC), developed to support cross-chain bridges between TRON, Ethereum, and BNB Chain. The technical architecture of BTTC draws on a delegated Proof-of-Stake consensus model consistent with TRON's broader infrastructure.
Key Acquisition Timeline
| Date | Event | |
|---|---|---|
| April 2001 | Bram Cohen releases the BitTorrent protocol | |
| 2004 | BitTorrent, Inc. co-founded by Bram Cohen and Ashwin Navin | |
| 2017 | Bram Cohen departs BitTorrent, Inc. to found Chia Network | |
| June 2018 | TRON Foundation acquires BitTorrent, Inc. for ~$140 million | |
| January 28, 2019 | BTT token launched via Binance Launchpad IEO; raises $7.2 million | |
| February 2019 | BTT White Paper v0.8.7 released | |
| 2019-2020 | Integration of BitTorrent Speed into BitTorrent and µTorrent clients | |
| October 2020 | Acquisition of DLive, a decentralized live streaming platform | |
| December 2021 | BitTorrent Chain (BTTC) mainnet launch; BTT redenomination (1:1000) | |
| June-July 2025 | BTTC 2.0 upgrade with enhanced PoS consensus and deflationary mechanics | |
| July 7, 2025 | BTFS v4.0 mainnet launch with enhanced data integrity |
Primary Use Cases and Real-World Applications
BitTorrent Speed — Bandwidth Incentivization
BitTorrent Speed represents the primary application of BTT, enabling users to earn tokens by seeding files and spend tokens for faster downloads. The feature operates through an automated bidding system where downloaders (service requesters) offer BTT to uploaders (service providers) in exchange for prioritized access to file pieces.
Operational Mechanics:
- When a bid is accepted, BTT is placed in escrow through a payment channel on the TRON blockchain
- Upon successful file transfer, funds are released to the service provider and recorded on-chain
- The system addresses a fundamental inefficiency in the original BitTorrent protocol: users had minimal incentive to continue seeding files after downloading, leading to swarm deterioration
- By introducing economic rewards, BitTorrent Speed extends swarm longevity, improves download speeds, and increases file availability
Current Adoption:
- Over 566 million wallets created through BitTorrent Speed
- Integration improvements ongoing in BitTorrent and µTorrent clients to convert the massive user base into active token holders
- Micropayment capability enables granular transactions that would be prohibitively expensive on other blockchains
BitTorrent File System (BTFS) — Decentralized Storage
BTFS is a decentralized file storage system built on blockchain technology using Delegated Proof-of-Stake consensus. Users can rent storage space and purchase decentralized storage using BTT tokens. BTFS v4.0, launched in July 2025, introduced significant enhancements:
- Enhanced data integrity: Improved verification mechanisms ensure stored data remains uncorrupted
- Transparent governance: Community-driven decision-making for protocol upgrades
- Daily airdrop incentives: Up to 750 million BTT distributed daily to boost network participation
- AI infrastructure integration: Positions BTFS as foundational infrastructure for decentralized AI applications, storing model fragments and knowledge bases
The BTFS ecosystem represents expansion beyond traditional file sharing into high-value use cases, particularly in supporting decentralized AI infrastructure where data storage and retrieval are critical components.
Cross-Chain Infrastructure and Interoperability
BTTC serves as a multi-chain scaling solution enabling seamless asset transfers across TRON, Ethereum, and BNB Chain. The heterogeneous cross-chain architecture facilitates:
- Liquidity pooling: Users can access BTT liquidity across multiple blockchain ecosystems
- Multi-chain DApps: Developers can build applications that operate across multiple chains
- Token mapping: Seamless conversion between BTT representations on different blockchains
- EVM compatibility: Full Ethereum Virtual Machine compatibility enabling DApp portability
This cross-chain positioning differentiates BitTorrent from isolated blockchain projects, positioning it as infrastructure connecting diverse blockchain networks.
Additional Ecosystem Applications
DLive Integration: BitTorrent acquired DLive, a decentralized live streaming platform, in October 2020. This integration enables creators to earn BTT through streaming activities and viewers to support creators through token payments.
DeFi Collateral: BTT serves as collateral on lending protocols. As of February 2026, over $1.55 million in BTT was supplied to JustLend DAO, demonstrating integration with the broader DeFi ecosystem.
Legal Tender Status: BTT was formally accepted as legal tender in the Commonwealth of Dominica in October 2022, signaling growing real-world adoption and regulatory recognition.
Payment Integration: CoinPayments integration enables BTT payments for BitTorrent and µTorrent Pro subscriptions, creating direct utility for token holders.
Key Partnerships and Ecosystem Integrations
2025 Strategic Partnerships
BitTorrent achieved significant ecosystem expansion in 2025 through multiple partnerships:
| Partner | Date | Integration Type | |
|---|---|---|---|
| Coinomi Wallet | March 2025 | Seamless BTT storage and management | |
| NOW Wallet | March 2025 | Multi-platform BTT support across devices | |
| Uquid | March 28, 2025 | Web3 e-commerce platform for payments and asset management | |
| ChangeNOW | April 6, 2025 | Instant crypto exchange integration for BTT swaps | |
| Guarda Wallet | April 25, 2025 | Direct BTT asset management within the platform | |
| Bullish Exchange | May 9, 2025 | Major trading venue listing expanding global liquidity | |
| HashKey Global | February 18, 2025 | Compliant exchange listing with 20,000 USDT trading campaign |
Exchange Listings and Liquidity
BTT is listed on major cryptocurrency exchanges including Binance, MEXC, Huobi, Poloniex, KuCoin, Gate.io, Bitfinex, Upbit, and others, providing broad market access and liquidity. The 24-hour trading volume of approximately $9.94 million against a market cap of $334.28 million indicates a volume-to-market-cap ratio of approximately 3%, reflecting moderate liquidity across multiple trading venues.
Historical Partnerships
- CoinPayments (February 2019): Enabled BTT payments for BitTorrent and µTorrent Pro subscriptions
- JUST (August 2020): DeFi integration allowing BTT as collateral for USDJ stablecoin minting
- DLive (October 2020): Acquisition of decentralized streaming platform integrated into BitTorrent X ecosystem
Competitive Advantages and Unique Value Proposition
Established User Base and Network Effects
BitTorrent's primary competitive advantage is its massive, established user base exceeding 2 billion users globally with over 200 million active wallets. This critical mass provides immediate network effects unavailable to competing projects. The protocol's 25-year history and ubiquitous adoption create significant barriers to entry for competitors.
The existing infrastructure means BitTorrent doesn't need to build user adoption from scratch; instead, it can monetize an already-established network through token incentives. This contrasts sharply with competing decentralized storage projects that must build user bases from zero.
Integration with TRON Ecosystem
BTT benefits from integration with TRON's high-speed, low-cost blockchain infrastructure. TRON's DPoS consensus enables transaction finality within seconds at minimal cost, making BTT practical for micropayments and frequent transactions that would be prohibitively expensive on other blockchains like Ethereum.
The TRON ecosystem provides:
- Sub-cent transaction fees: Enabling granular micropayments
- Fast settlement: 2-3 second block times for near-instant finality
- Established liquidity: Access to TRON's DeFi ecosystem and user base
- Developer tools: Comprehensive development frameworks and documentation
Incentive Alignment and Protocol Efficiency
BTT introduces economic incentives that address fundamental protocol inefficiencies. By rewarding file seeding and bandwidth sharing, the token creates sustainable participation incentives that improve network health and performance—a capability absent in the original protocol.
The original BitTorrent protocol suffered from the "tragedy of the commons," where users had minimal incentive to continue seeding after downloading. BTT solves this through direct economic rewards, extending swarm longevity and improving download speeds for all participants.
Cross-Chain Interoperability
BTTC's heterogeneous cross-chain architecture enables asset transfers across multiple blockchain ecosystems while maintaining EVM compatibility. This positions BitTorrent as infrastructure connecting diverse blockchain networks rather than an isolated protocol, expanding its addressable market beyond TRON users.
Decentralized Infrastructure Focus
BitTorrent's positioning within the DePIN (Decentralized Physical Infrastructure) sector aligns with growing demand for decentralized alternatives to centralized cloud services. BTFS v4.0's integration with AI infrastructure represents expansion into high-value use cases where decentralized storage is increasingly critical.
Competitive Landscape
BitTorrent faces competition from established decentralized storage projects:
| Competitor | Market Cap | Ranking | Key Differentiator | |
|---|---|---|---|---|
| Filecoin | $1.37 billion | #39 | IPFS protocol, permanent storage model | |
| Arweave | $361 million | #89 | Permanent storage with unique economics | |
| Storj | Smaller | Lower | Object storage focus | |
| Siacoin | Smaller | Lower | Blockchain-based storage |
However, BitTorrent's established user base, TRON ecosystem integration, and 25-year brand recognition provide significant differentiation from these competitors. While Filecoin and Arweave have larger market capitalizations, they lack BitTorrent's existing user infrastructure and network effects.
Current Market Position and Development Activity
Market Metrics (March 1, 2026)
| Metric | Value | |
|---|---|---|
| Current Price | $0.0000003386 USD | |
| Market Capitalization | $334.28 million | |
| Fully Diluted Valuation | $335.29 million | |
| 24-Hour Trading Volume | $9.94 million | |
| Circulating Supply | 987.04 trillion BTT | |
| Total Supply | 990 trillion BTT | |
| Market Rank | #134 by market cap | |
| Price Change (24h) | +0.38% | |
| Price Change (7d) | -0.38% |
The extremely low per-token price reflects the massive supply structure designed for micropayments. While this enables granular transactions, it also means significant price appreciation would require substantial increases in network utility and adoption.
Recent Development Milestones (2025-2026)
BTTC 2.0 Upgrade (June-July 2025): Enhanced Proof-of-Stake consensus mechanism improving efficiency and cross-chain transfer capabilities. The upgrade introduced deflationary tokenomics and set staking APY at 6.77%-7.01%.
BTFS v4.0 Mainnet Launch (July 7, 2025): Introduced enhanced data integrity, transparent governance mechanisms, and daily airdrop incentives of up to 750 million BTT. The upgrade positions BTFS as foundational infrastructure for decentralized AI applications.
Multi-Wallet Support (November 5, 2025): BTTC DApps now support multiple wallet connections on both PC and mobile platforms, improving user experience and accessibility.
BitTorrent Speed Wallet Adoption: Over 566 million wallets created through BitTorrent Speed, with ongoing integration improvements in BitTorrent and µTorrent clients to convert the massive user base into active token holders.
Strategic Roadmap Objectives
Short-term (0-6 months):
- Expand node network through optimized incentive schemes
- Enhance user experience through wallet integration and simplified onboarding
- Increase DApp ecosystem diversity through developer partnerships
Medium-term (6-12 months):
- Achieve 5,000+ active validator nodes globally
- Introduce third-party validators as Relayers with new reward mechanisms
- Expand BTFS storage capacity and AI infrastructure integration
- Develop new DApps in DeFi, NFTs, supply chain finance, and gaming
Long-term (12+ months):
- Establish BitTorrent as central infrastructure in TRON's DePIN ecosystem
- Integrate AI model storage and knowledge base capabilities
- Expand cross-chain interoperability to additional blockchain networks
- Transition governance toward decentralized autonomous organization (DAO) structures
Development Activity Assessment
GitHub repositories show consistent development activity with regular commits improving platform capabilities. The project maintains transparency through community updates and ecosystem partner communications. Development focuses on scalability, user experience, and ecosystem expansion rather than fundamental protocol changes.
Summary and Key Takeaways
BitTorrent Token represents a unique convergence of established peer-to-peer infrastructure and blockchain-based economic incentives. By tokenizing the world's largest decentralized file-sharing protocol, BTT addresses fundamental inefficiencies in the original BitTorrent design while creating new use cases in decentralized storage, cross-chain infrastructure, and DePIN applications.
The project's competitive advantages—including a massive user base exceeding 2 billion users, integration with TRON's low-cost blockchain infrastructure, and 25 years of established brand recognition—position it as significant infrastructure within the decentralized internet ecosystem. The shift toward deflationary tokenomics through BTTC 2.0, combined with expanding use cases in BTFS and BitTorrent Speed, demonstrates sustained commitment to ecosystem expansion and technical innovation.
The token's value depends directly on adoption of BitTorrent-based services and BTFS usage. While the extremely low per-token price enables micropayments, it also means that meaningful price appreciation requires substantial increases in network utility and ecosystem adoption. The 2025 partnerships with major wallets and exchanges, combined with BTFS v4.0's AI infrastructure integration, suggest the project is actively pursuing expansion into high-value use cases beyond traditional file sharing.