nsnft/v2 package

Package nsnft is the token, and only the token.

WHY THIS REALM EXISTS AT ALL.

A name here is a GRC-721. An external marketplace that wants to list one has to hard-code an address, and whatever address that is becomes the thing we can never move. Until now the interface was split: the READS lived on nsdata, which is permanent, and the WRITES — Approve, SetApprovalForAll, TransferFrom — lived on nslogic, which changed address three times in a single day. So the half an integrator needs in order to settle a sale was the half that kept moving, and the reads kept answering while it did, which is the worst way for it to break.

The fix is to pick ONE realm to freeze and make it the smallest, most boring one there is. That is this realm: an ownership ledger, the approval bookkeeping GRC-721 requires, the governance that decides who may mint, and nothing else. No prices, no expiry, no profiles, no policy — none of the things that will certainly need changing.

Everything with an opinion in it stays in the registry, which becomes replaceable BECAUSE ownership no longer lives there. A migration then moves records, not tokens: nobody's holdings are stranded and no listing anywhere goes stale, because the token contract never moved.

THE LEDGER IS THE CHAIN'S OWN gno.land/p/nt/grc721/v0, NOT A COPY.

chain.Emit stamps the package whose code emits, and wallets and indexers (Adena, the Onbloc indexer) accept only Transfer and NewToken events stamped gno.land/p/nt/grc721/v0. The first version of this realm minted on a vendored GRC-721 deployed under our own p/ path, so every event it would ever have emitted carried OUR path, and no wallet would ever have listed a single name — permanently, because events cannot be re-emitted and this realm cannot be replaced. The ledger object lives here, created once in init; only this realm holds its PrivateLedger, and no Teller is ever handed out (see the note on holds below).

THIS REALM HAS ITS OWN GOVERNANCE, AND THAT IS THE POINT.

It would be shorter to ask nsdata who the admin is. It would also re-couple this realm to the exact thing it exists to let us replace — nsnft would then depend on one nsdata forever and we would have moved the problem rather than solved it. So roles, trust and the timelock are local (governance.gno), and nsdata is not imported.

WHAT MAY BE CHANGED LATER AND WHAT MAY NOT.

May, slowly: which registries are trusted, the roles, the timelock, and which view realm draws the art. May, instantly: withdrawing a registry's trust or the art, which only ever removes a power. Through a trusted registry only: the hold bits on a token. May not: anything else. If this realm ever needs a new function, the design has failed and the honest answer is that it was not small enough to freeze.