Mint and send private NFTs such as medical imaging on Flow Blockchain for licensed data consumers or recipients.
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- Desktop/Hard Wallet -- > Recipient
- Web dAPP -- > Publisher or Sender
- JS service -- > Developer SDK
- Sender: Enter recipient's wallet or email or userID, and upload the image.
- Sender: Upload image.
- System: Create or look up the account and retrieve the recipient's public key.
- System: Retrieve the public key.
- System: Encrypt the image and upload it to IPFS.
- System: Mint NFT.
- Caramel: Validate the recipient's email.
- Caramel: Combine the recipient's and Caramel's key shares to reconstruct the private key.
- Recipient: Decrypt the image with the private key.
- Recipient: Display the decrypted image.
| Feature | Flow Blockchain | Ethereum |
|---|---|---|
| Account Model | User-centric, and stores any number of contracts within in named form. | Ethereum accounts follow the externally owned account (EOA) model. |
| Programming Language | Cadence, designed for resource-oriented development, faster smart contract development and improved on-chain utility. | Solidity is the primary language used in Ethereum smart contracts. |
| Scalability | Flow's unique sharded architecture enables higher throughput and scalability especially for large minting. | Ethereum faces scalability challenges, leading to network congestion during peak usage. |
| Gas Fees | Flow's gas model uses transaction fees based on computation complexity, making it more predictable and cost-effective for users. | Ethereum uses a gas fee model that can be volatile, especially during periods of network congestion, resulting in higher fees. |
| Consensus Algorithm | Flow uses a flavour the HotStuff consensus algorithm, ensuring faster block confirmation times. | Ethereum currently employs a Proof-of-Work (PoW) consensus algorithm, resource-intensive. |
| NFT Standard | Flow has its own standard for Non-Fungible Tokens (NFTs) and an on-chain metadata view-resolver providing ease and flexibility in token creation and tracking. | Ethereum uses the ERC-721 and ERC-1155 standards for NFTs, offering a wide range of tokens |
| Environmental Impact | Flow's Proof-of-Stake (PoS) mechanism consumes significantly less energy compared to Ethereum's PoW, making it more environmentally friendly. | Ethereum's PoW consensus consumes substantial amounts of energy, leading to environmental concerns. |
| Ecosystem Growth | Flow has a growing ecosystem with partnerships in the entertainment, gaming, and NFT spaces with brands like NBA, NFL, Instagram... | Ethereum's ecosystem is well-established and has the first-mover advantage in the blockchain space. |
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