Block Modification

block.modification event is a startup script event that allows you to change properties of existing blocks

onEvent('block.modification', event => {
  event.modify('minecraft:stone', block => {
    block.destroySpeed = 0.1
    block.hasCollision = false
  })
})

All available properties:

String material boolean hasCollision float destroySpeed float explosionResistance boolean randomlyTicking String soundType float friction float speedFactor float jumpFactor int lightEmission boolean requiredTool