@x402104
What is an ANS-104 DataItem?
An ANS-104 DataItem is a self-contained, cryptographically signed data container that wraps binary data with metadata and cryptographic proof of authenticity. It includes the data payload, owner’s public key, tags for metadata, and a signature generated using Arweave’s deep-hash algorithm, with the DataItem ID being the SHA256 digest of this signature.
However, the signing mechanism supports multiple cryptographic standards - the DataItem can be signed with Ethereum secp256k1 keys, Solana Ed25519 keys, or Arweave’s RSA-PSS keys, making it blockchain-dynamic while maintaining cryptographic guarantees of authenticity and immutability regardless of where it’s stored.
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