From ArtByte's Forum:
" We have mined the first block with SegWit enabled. You can see it on the ArtByte explorer. Look at the block version number, it ends in 915 which is signalling SegWit and CSV.
Neither is active but the pool miner is voting for it to be enabled on the network, when we get to 8,064/10,080 blocks signaling support for both Version Bit forks it will be locked in, another two weeks and it will be active."
http://forum.artbyte.me/topic/5448-deployment-of-segwit-has-begun-on-the-live-artbyte-blockchain/