Metadata and royalties

On-chain metadata

The standard Hyndle NFT presentation is generated entirely on-chain by HyndleMetadataRenderer.

The token URI contains Base64-encoded JSON with a Base64-encoded SVG. The default artwork uses a fixed Hyndle visual system, the protocol symbol, and the normalized name.

This default does not require an application server, object storage, or IPFS gateway to render the metadata.

Metadata safety

Dynamic name text is escaped before it is written into SVG and JSON. Long names are wrapped before escaping so an encoded XML entity cannot be split into invalid markup.

ERC-2981 royalty

HyndleNames implements ERC-2981 with an immutable rate of 10%. The owner can change the royalty receiver, but cannot change the rate.

ERC-2981 reports royalty information. It does not force every transfer to pay. A compatible marketplace may honor the royalty, while a direct wallet transfer or a marketplace with a different policy may not.

Custom artwork

Every Hyndle name uses the standard on-chain artwork by default. If custom artwork becomes available, it will be presented as an optional owner action and will not change name ownership.