Cross-chain bridges in Spain: taxable events?
Conservative interpretation: Bridge = taxable "permuta" (swap between equivalent tokens)
Progressive interpretation (widely adopted): If tokens are exactly equivalent (same ETH), bridge = internal movement, not a taxable event
kointax follows the progressive interpretation (bridges as internal movements), consistent with most tax advisors and platforms.
Bridge fees are recorded as deductible costs. Hacked bridge losses = capital loss in year of hack.