Chaintip freshness cert: signed identity scores that age with the chain

A schnorr signature tells you who. A timestamp tells you when. A chaintip tells you when, honestly . And a chaintip with a TTL tells you when and how long it's still good for . That last piece is what we shipped today on the Depth-of-Identity Oracle. If you've been following the softwar thread (Lowery's Softwar , Paparo's INDOPACOM testimony, the Bitcoin Policy Institute's recent press cycle), the framing matters: bitcoin proof-of-work imposes a thermodynamic cost. A signature anchored to that c