2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/226152We construct the universal sl(2)-tangle cohomology using an approach with webs and dotted foams. This theory depends on two parameters, and for the case of links it is a categorification of the unnormalized Jones polynomial of the link.27 pages, many figures; v2: changes following referee's suggestions, typos correctedGeometric Topology57M27, 57M25text