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General  What is TxLINE? TxLINE is a sports data API delivering fixtures, odds, scores, and settlement data, with every data point cryptographically verified on Solana, so your product never has to trust a middleman.    Ready to build? Go straight to our Quickstart Guide.  Who is TxLINE designed for? Developers, sportsbooks, betting exchanges, prediction markets, analytics platforms, and blockchain-based betting products.  What makes TxLINE different from other sports data APIs? Trustlessness. Traditional APIs require blind trust. TxLINE cryptographically anchors every score, odds figure, and fixture onto Solana via Merkle proofs. This lets you independently verify data timing and integrity permissionlessly, serving as the foundation for trustless smart-contract settlement.  Where can I get help? Documentation and an API reference are available at txline-docs.txodds.com. Enterprise customers can access dedicated support with their Account Manager. Alternatively, email our helpdesk for further assistance at hello@txodds.com.   Getting Started  How quickly can I get started? Most developers are up and running in minutes: create a Solana wallet, subscribe to a tier (the free tier requires no payment), activate an API token, and make your first request.    What do I need before I start? A Solana wallet is required to activate any subscription, including the free tier. For paid tiers, you’ll also need USDT on the Solana network to purchase TxL tokens.  **Do I need a crypto wallet or cryptocurrency to use TxLINE? **  Crypto Wallet: Yes. A Solana wallet is strictly required for all tiers—including the free tier—because data entitlements and subscription states are recorded completely on-chain.  Cryptocurrency: Not for the free tier. Paid subscriptions require TxL tokens, purchased using USDT on Solana (1 USD = 1,000 TxL). KYC verification may apply depending on compliance requirements.   How do I purchase TxL tokens? Fund your Solana wallet with USDT, request a purchase quote from the TxLINE backend, then verify, sign broadcast the transaction to Solana.  Is KYC required? KYC verification may be required for TxL token purchases depending on compliance requirements.    Free Tier & World Cup  Is there a free trial, and what does it include? Yes. World Cup and International Friendlies data is free with no payment or credit card required. There are two free service tiers: 60-second delayed and real-time. You can find further information on subscription tiers here https://txline-docs.txodds.com/documentation/subscription-tiers.  What does the World Cup feed include? The World Cup feed includes: 
  • Live scores and score updates 
  • Match events: goals, cards, substitutions, and more 
  • Match status and period changes 
  • Fixtures and scheduling data 
  • Odds data (via the StablePrice feed) 
  • Historical match data for replay and analysis 
Are there any other live event types planned for the World Cup feed? The full list of supported event types is in the documentation at txline-docs.txodds.com or contact hello@txodds.com for more information.  Can I use the free tier for commercial projects? Yes, including commercial projects. For production use cases we recommend upgrading for the best user experience with live in-play data and real-time access.  Is there a rate limit on the free tier? No rate limits. Free data applies to both 60-second delay and real-time tiers.   Do I need to renew my free subscription? Subscriptions run in 4-week increments. When access expires, simply re-subscribe. Free tier renewals are always no cost.    Data & Sports Coverage  What sports and competitions are available? Football (Soccer) is currently supported, including the FIFA World Cup and International Friendlies on the free tier, plus over 1,000 leagues via paid plans. We also feature premium, in-venue scout-verified scores for US college sports (NCAA Football and Basketball).  Is there a free trial, and what does it include?  Yes. There are two free access tiers — 60-second delayed and real-time. Both cover World Cup and International Friendlies data at no cost with no rate limits. The feed includes live scores, match events (goals, cards, substitutions), scheduling, and odds data via the StablePrice feed.  View the full breakdown in our Subscription Tiers Section above.  What data can I access? Depending on your subscription: fixtures, live scores, match events, odds, historical data, real-time updates, and on-chain settlement information.  How is data delivered? Via a REST API and Server-Sent Events (SSE) for real-time streaming. Historical data is available through snapshot and replay endpoints.  What is the difference between 60-second delayed and real-time data?   60-Second Delayed: A budget-friendly, lower-cost option designed for latency-tolerant applications.   Real-Time: Premium, sub-second live data required for live odds, in-play markets, and immediate settlement.  What is on-chain verification and why does it matter?   Every data update is cryptographically hashed and its Merkle root is published to Solana. This lets you independently verify that a score, stat, or odds figure was published at an exact timestamp and hasn’t been altered—providing your users with complete cryptographic proof. Ultimately, it eliminates data tampering and provides the unshakeable foundation needed for trustless, automated smart-contract settlement..   Subscriptions & Pricing  How do subscriptions work? Can I choose specific leagues?   Subscriptions are priced per 28-day period, purchasable in multiples up to 12 months. Yes, you can skip standard bundles and select specific competitions via custom league subscriptions.  Customize your package in our Subscription Tiers Section above.  Can I upgrade from the free tier to a paid tier? Yes, at any time. New subscriptions take effect immediately.  What happens if I don’t renew? API access expires at the end of the subscription period. Re-subscribe at any time to restore access.  Where can I get help?