update hash_head_pos: include prev block hash.
update hash_head_pos: include prev block hash.

the-metaverse/metaverse,mvs-org/metaverse,mvs-live/metaverse,mvs-org/metaverse,mvs-org/metaverse,mvs-org/metaverse,mvs-org/metaverse,mvs-live/metaverse,mvs-org/metaverse,the-metaverse/metaverse,the-metaverse/metaverse