Archdeacon–Jaeger oriented 5-cycle double cover conjecture

Let $G$ be a bridgeless graph. An oriented 5-cycle double cover is a collection of five directed cycles such that every edge of $G$ belongs to exactly two cycles and the two cycles traverse that edge in opposite directions.

Archdeacon–Jaeger's oriented 5-cycle double cover conjecture. Every bridgeless graph $G$ has an oriented 5-cycle double cover.

The conjecture is presented as an implication used to obtain the bound $\phi_2(G)\leq \tau^2$, where $\tau$ is the Golden Ratio; its resolution is not specified in the source.