EA-RECEPTION-01 is the schema specification for the reception edge, the counter-stack's relation layer built as live data. An edge is a typed, evidenced, versioned, attributed machine-readable assertion that one text carries a worked reception of another — provenance restored as relation rather than bibliography — with source and witness pointing at their corpus seats, a closed relation-type vocabulary, invoked operator clauses from the frozen registry, preserved and transformed inventories, evidence citing locus and deposit, earned statuses, contamination flags, and a mandatory counterargument slot, on the principle that an edge unable to carry its objections is advocacy rather than apparatus. The nine founding edges seat the Sappho chain from the sole Longinus carrier through the Alexandrian crossing to the sealed-test edge on Revelation 12, whose own counterargument field carries the C1 failure and both negative sub-findings, with the Slavonic carrier wearing contested status. Schema and graph live at alexanarch.org/data/reception/, rendered at machinemediation.org/edges/, with extension by versioned edges and dispute by counterargument or rival edge, never silent overwrite.