migrate let the owner supply the new state, so an owner could put a script
of their own in front of the approved code and take the certificate out of
the covenant, or rewrite owner and expiry on the way. The contract now
carries its own state over and the owner supplies only the code. The
steward's approval covers source and destination code, so it cannot be
replayed in another tier or network.
The delivery escrow could be collected with a second protocol message after
the agreed one; it now allows at most four outputs, the fourth plain change.
A subscription draw could pay its fee allowance to a third output; it now
has one or two outputs and pays the host exactly the price.
Smaller: the commit salt is exactly 32 bytes (one box could serve several
names), expiry stays a block height, and relative-lock terms are range
checked in script. Escrow quotes are refused for co-sign TLDs, where a
delivery would satisfy the contract and register nothing.
Expiry was always going to be the chain refusing, not resolvers agreeing. This
is that contract: a certificate sits in a covenant whose address encodes its
owner and expiry, and five paths move it. The owner renews, transfers,
releases or migrates; anyone takes over an expired name at a price that
glides from a premium to a floor, paying the previous owner a share while the
grace period lasts and committing to the name a block ahead.
The two changing values are the last constructor arguments, so they sit first
in the redeem script and the contract re-creates itself by swapping 26 bytes.
A resolver that knows the code can check any claimed owner and expiry against
the address.
Every number comes from registry-lifecycle.js, which was written as the
fixture for this. The tests run each path in libauth's VM under the 2025 and
2026 rules, compare price and split to that model along the glide, and then
break one rule at a time with valid signatures; the suite counts that the VM
itself refused them.
Draft, not reviewed, and not wired into any resolver. REGISTRY-COVENANT-v1.md
says where it departs from the design: script cannot bound a height from
above, so reclaim has no deadline and a commit cannot expire, which leaves
commit hoarding open. That is the first thing a reviewer should read.
