# Welcome to Sphera Sphera is the Super Fan Platform — one place to follow your team, engage with fellow fans, and own the moments that matter. ## The Problem Being a sports fan today is exhausting. You engage on Twitter, buy tickets on Ticketmaster, watch on streams, and bet on another app. Simply keeping track of your favourite team feels like a chore. Your identity is fragmented across the web. Teams only care about you on game day. You create value, but you own nothing. **It's time to replace the noise with a signal.** ## One Profile. Three Zones. Everything You Need. Sphera brings your entire fan experience into one platform: * **Community Hub** — Don't just follow. Belong. Connect with fans, flex achievements, discuss your favourite team, and get rewarded for your loyalty. * **FutureCast** — Prove your expertise. Predict outcomes, earn unique rewards, climb the leaderboards, and raise the stakes on peer-to-peer prediction markets. * **Marketplace** — Collect and trade. Earn unique physical and digital rewards like limited edition player jerseys, and trade them with other fans on our decentralised peer-to-peer marketplace. ## Quick Links
MarketplaceBrowse and trade Sphera NFTshttps://market.sphera.world
NFT BridgeBridge NFTs between Hedera and Avalanchehttps://nftbridge.sphera.world
WebsiteLearn more about Spherahttps://sphera.world
X (Twitter)Follow us for the latest updateshttps://x.com/spheraworld
## Need Help? * Check our [FAQ](/faq) for common questions * Join our [Discord](https://discord.gg/ny4uKYPYfx) for community support * Contact us at # Supported Assets Sphera currently has five NFT collections on Hedera, all of which can be bridged to Avalanche via the [NFT Bridge](/nft-bridge/bridge) and traded on the [Marketplace](https://market.sphera.world). ## INO Collections These three collections were launched via Sphera's Initial NFT Offering on Headstarter. Each NFT entitles the holder to a token airdrop equivalent to the amount stated on the NFT at Token Generation Event (TGE). ### Sphera Amateur | Field | Details | | ------------------- | ----------------------------------------------------- | | **Supply** | 250 | | **Hedera Token ID** | 0.0.4154809 | | **TGE Airdrop** | Yes — token amount equivalent to the value on the NFT | ### Sphera Fan | Field | Details | | ------------------- | ----------------------------------------------------- | | **Supply** | 250 | | **Hedera Token ID** | 0.0.4154815 | | **TGE Airdrop** | Yes — token amount equivalent to the value on the NFT | ### Sphera Ultras | Field | Details | | ------------------- | ----------------------------------------------------- | | **Supply** | 250 | | **Hedera Token ID** | 0.0.4154820 | | **TGE Airdrop** | Yes — token amount equivalent to the value on the NFT | ## Pass Collections ### Legacy Pass | Field | Details | | ------------------- | --------------------------------------------- | | **Supply** | 100 | | **Hedera Token ID** | 0.0.5943132 | | **Utility** | Under consideration — details to be announced | ### Annual Pass | Field | Details | | ------------------- | --------------------------------------------- | | **Supply** | 100 | | **Hedera Token ID** | 0.0.5943120 | | **Utility** | Under consideration — details to be announced | ## Viewing Your NFTs * **On Hedera:** Search your account on [HashScan](https://hashscan.io) * **On Avalanche:** Check the [Sphera Marketplace](https://market.sphera.world) or [Snowtrace](https://snowtrace.io) * **Bridge interface:** Connect your wallet at [nftbridge.sphera.world](https://nftbridge.sphera.world) # FAQ ## General ### What is Sphera? Sphera is the Super Fan Platform — one place to follow your team, engage with fellow fans, and own the moments that matter. We bring your entire fan experience into one platform with three zones: Community Hub, FutureCast, and Marketplace. ### What blockchain does Sphera use? Sphera NFTs are minted on **Hedera** and can be bridged to **Avalanche** for trading on additional marketplaces. Both networks offer fast, low-cost transactions. ### How do I get started? 1. Set up a wallet (HashPack for Hedera, MetaMask for Avalanche) 2. Visit our [marketplace](https://market.sphera.world) 3. Browse and collect NFTs ## Wallets ### What wallet do I need? * **For Hedera**: [HashPack](https://hashpack.app) (recommended) * **For Avalanche**: MetaMask or any EVM-compatible wallet ### How do I set up HashPack? 1. Download HashPack from [hashpack.app](https://hashpack.app) 2. Create a new wallet or import an existing one 3. Secure your recovery phrase 4. Connect to Sphera marketplace ## NFTs & Collections ### What NFT collections are available? Current collections include: * **Sphera Amateur** - Entry-level collectibles * **Sphera Fan** - Fan-tier collectibles * **Sphera Ultras** - Premium collectibles * **Legacy Pass** - Exclusive membership pass * **Annual Pass** - Yearly membership benefits ### Where can I view my NFTs? * On Hedera: Visit [HashScan](https://hashscan.io) and search your account * On Avalanche: Check [Snowtrace](https://snowtrace.io) or the Sphera marketplace * In the [NFT Bridge](https://nftbridge.sphera.world) interface ## Bridge ### What is the NFT Bridge? The NFT Bridge allows you to move your Sphera NFTs between Hedera and Avalanche networks. This enables trading on different marketplaces and accessing different DeFi opportunities. ### Is bridging safe? Yes. The bridge uses secure smart contracts that lock your NFT on one chain and mint an equivalent wrapped version on the other. You can always bridge back to get your original NFT. For more bridge questions, see our [Bridge FAQ](/nft-bridge/faq). # Overview The Sphera NFT Bridge allows you to seamlessly move your NFTs between **Hedera** and **Avalanche** networks. ## Why Bridge? * **Access More Marketplaces** - Trade your NFTs on Avalanche-based marketplaces * **Lower Gas Fees** - Choose the network with the best fees for your transaction * **Flexibility** - Use your NFTs across different DeFi ecosystems ## Supported Collections | Collection | Hedera | Avalanche | | -------------- | ------ | --------- | | Sphera Amateur | ✅ | ✅ | | Sphera Fan | ✅ | ✅ | | Sphera Ultras | ✅ | ✅ | | Legacy Pass | ✅ | ✅ | | Annual Pass | ✅ | ✅ | ## How It Works ### Hedera → Avalanche 1. Your NFT is **locked** in a secure smart contract on Hedera 2. A **wrapped version** is minted on Avalanche 3. The wrapped NFT has identical metadata and artwork ### Avalanche → Hedera 1. Your wrapped NFT is **burned** on Avalanche 2. The original NFT is **unlocked** on Hedera 3. You receive your original NFT back ## Security * Smart contracts are designed with security best practices * Only the bridge authority can mint/unlock NFTs * Your NFT is never destroyed - it's either locked or unlocked ## Get Started Ready to bridge? See [How to Bridge](/nft-bridge/how-to-bridge) for step-by-step instructions. # How to Bridge This guide walks you through bridging your Sphera NFTs between Hedera and Avalanche. ## Prerequisites Before you start, make sure you have: * [ ] **HashPack Wallet** - For Hedera transactions ([download](https://hashpack.app)) * [ ] **MetaMask or EVM Wallet** - For Avalanche transactions * [ ] **HBAR** - Small amount for Hedera gas fees (\~2-5 HBAR) * [ ] **AVAX** - Small amount for Avalanche gas fees (\~0.01 AVAX) * [ ] **A Sphera NFT** - In one of the supported collections ## Bridge: Hedera → Avalanche ### Step 1: Connect Your Wallets 1. Go to [nftbridge.sphera.world](https://nftbridge.sphera.world) 2. Click **Connect HashPack** and approve the connection 3. Click **Connect MetaMask** and approve the connection ### Step 2: Select Your NFT 1. Your Hedera NFTs will appear in the grid 2. Click on the NFT you want to bridge 3. The NFT card will highlight when selected ### Step 3: Choose Destination 1. Click **Bridge** 2. Enter your Avalanche destination address (or leave blank to use connected wallet) 3. Review the transaction details ### Step 4: Approve & Lock 1. Click **Confirm Bridge** 2. **First transaction**: Approve the bridge contract to transfer your NFT 3. **Second transaction**: Lock your NFT in the bridge contract 4. Wait for confirmation (\~10-30 seconds) ### Step 5: Receive on Avalanche 1. The bridge will automatically mint your wrapped NFT on Avalanche 2. You'll see a success message with transaction links 3. Your NFT now appears on Avalanche! ## Bridge: Avalanche → Hedera ### Step 1: Connect Your Wallets Same as above - connect both HashPack and MetaMask. ### Step 2: Select Your Wrapped NFT 1. Your Avalanche NFTs will appear in the grid 2. Click on the wrapped NFT you want to bridge back 3. Make sure your MetaMask is on Avalanche network ### Step 3: Burn & Unlock 1. Click **Bridge** 2. Enter your Hedera destination address (or leave blank to use connected wallet) 3. Click **Confirm Bridge** 4. Approve the burn transaction in MetaMask 5. Wait for the bridge to unlock your original NFT ### Step 4: Receive on Hedera 1. The bridge will unlock your original NFT on Hedera 2. You'll see a success message with transaction links 3. Your original NFT is back in your Hedera wallet! ## Transaction Times | Direction | Typical Time | | ------------------ | ------------- | | Hedera → Avalanche | 10-30 seconds | | Avalanche → Hedera | 10-30 seconds | ## Fees | Network | Approximate Fee | | --------------------- | ----------------- | | Hedera (lock/unlock) | \~1-2 HBAR | | Avalanche (mint/burn) | \~0.005-0.01 AVAX | ## Troubleshooting ### Transaction stuck? * Check [HashScan](https://hashscan.io) for Hedera transactions * Check [Snowtrace](https://snowtrace.io) for Avalanche transactions * If stuck for more than 5 minutes, contact support ### NFT not appearing? * Refresh the page * Disconnect and reconnect your wallet * Wait a few minutes for blockchain indexing ### Need help? Join our [Discord](https://discord.gg/ny4uKYPYfx) for support. # Bridge FAQ Common questions about the Sphera NFT Bridge. ## General ### Is the bridge safe? Yes. The bridge uses secure smart contracts: * On Hedera: Your NFT is **locked** (not burned) in a LockBox contract * On Avalanche: A **wrapped version** is minted that you control * You can always bridge back to recover your original NFT ### What happens to my NFT when I bridge? **Hedera → Avalanche:** * Your original NFT is locked in a secure contract on Hedera * A wrapped NFT with identical metadata is minted on Avalanche * The wrapped NFT is sent to your specified address **Avalanche → Hedera:** * Your wrapped NFT is burned on Avalanche * Your original NFT is unlocked on Hedera * The original NFT is sent to your specified address ### Can I bridge to a different wallet? Yes! When bridging, you can specify a different destination address. This is useful for: * Sending to a friend * Moving to a different wallet you control * Consolidating NFTs ## Wallets ### Why do I need two wallets? * **HashPack** is needed for Hedera transactions (lock/unlock) * **MetaMask** is needed for Avalanche transactions (mint/burn) Both wallets must be connected for the bridge to work. ### Can I use wallets other than HashPack? Currently, HashPack is the recommended wallet for Hedera. We may add support for other Hedera wallets in the future. ### Can I use wallets other than MetaMask? Yes! Any EVM-compatible wallet works for Avalanche, including: * MetaMask * Rabby * Rainbow * WalletConnect-compatible wallets ## Fees & Timing ### How much does bridging cost? | Direction | Network Fee | | ------------------ | ----------------- | | Hedera → Avalanche | \~1-2 HBAR | | Avalanche → Hedera | \~0.005-0.01 AVAX | Fees may vary based on network congestion. ### How long does bridging take? Typically 10-30 seconds for either direction. The process includes: 1. Your transaction on the source chain 2. Bridge verification 3. Transaction on the destination chain ### Why is my transaction taking longer? Possible reasons: * Network congestion * Wallet connection issues * Browser/extension issues Try refreshing the page or reconnecting your wallet. ## Troubleshooting ### My NFT is stuck / not appearing 1. **Wait a few minutes** - Blockchain indexing can take time 2. **Refresh the page** - The UI may need to reload 3. **Check explorers**: * [HashScan](https://hashscan.io) for Hedera * [Snowtrace](https://snowtrace.io) for Avalanche 4. **Contact support** if stuck for more than 10 minutes ### I bridged but didn't receive my NFT This is rare but can happen if: * Network issues interrupted the bridge * The mint/unlock transaction failed Contact support on [Discord](https://discord.gg/ny4uKYPYfx) with your transaction hash and we'll help recover your NFT. ### The bridge says "Transaction failed" Common causes: * **Insufficient gas** - Make sure you have enough HBAR/AVAX * **Wrong network** - Ensure MetaMask is on Avalanche (not Ethereum) * **Wallet not connected** - Reconnect both wallets ### Can I cancel a bridge in progress? Once a lock/burn transaction is confirmed, it cannot be cancelled. The bridge will complete the process automatically. ## Technical ### What are the contract addresses? **Hedera Mainnet (LockBox):** | Collection | Address | | -------------- | -------------------------------------------- | | Sphera Amateur | `0x1018E39bc165a0c3CeB0001f466344d4139e9c68` | | Sphera Fan | `0xe5C5b7ab701573eF0ADBf831C1F95Fb9723A3856` | | Sphera Ultras | `0x47A22f1587809A0060Fd64527b489D48B8dfeFB1` | | Legacy Pass | `0x71F295437F9A064E5ae65E6890a380f0efC31D02` | | Annual Pass | `0x48A8684B279A132F2eCd021db9d63ecdccbC15B9` | **Avalanche Mainnet (WrappedNFT):** | Collection | Address | | -------------- | -------------------------------------------- | | Sphera Amateur | `0xeF707625603652520ee77b14cd6C13BBbD6275C0` | | Sphera Fan | `0xCFf5A923c5D427F7fc156F672CE08E562D5474C6` | | Sphera Ultras | `0xA0Fc7Be4D48Ec8196a57Ab86267A89EDB30237A3` | | Legacy Pass | `0x1018E39bc165a0c3CeB0001f466344d4139e9c68` | | Annual Pass | `0x47A22f1587809A0060Fd64527b489D48B8dfeFB1` | ### Is the bridge code open source? The bridge frontend is available at [github.com/Deca4Advisory-Code/sphera-layerzero-nft-bridge](https://github.com/Deca4Advisory-Code/sphera-layerzero-nft-bridge). # Getting Started The Sphera Marketplace is your destination for browsing, buying, and trading Sphera NFTs. ## Visit the Marketplace Go to [market.sphera.world](https://market.sphera.world) ## Connect Your Wallet 1. Click **Connect Wallet** in the top right 2. Select your wallet provider 3. Approve the connection request ### Supported Wallets * MetaMask * WalletConnect * Coinbase Wallet * And other EVM-compatible wallets ## Browse Collections 1. Scroll down to see featured collections 2. Click on a collection to view all NFTs 3. Use filters to narrow your search ## View NFT Details Click on any NFT to see: * High-resolution artwork * Metadata and attributes * Current price (if listed) * Transaction history * Owner information ## Buy an NFT 1. Find an NFT you want to buy 2. Click **Buy Now** (if listed for sale) 3. Confirm the transaction in your wallet 4. The NFT will be transferred to your wallet ## List an NFT for Sale 1. Connect your wallet 2. Navigate to your profile 3. Select the NFT you want to sell 4. Set your price 5. Confirm the listing transaction ## Need Help? * Check our [FAQ](/faq) * Join [Discord](https://discord.gg/ny4uKYPYfx) for support * Email