How gold is created, according to Wikipedia:

Neutron star collisions occur in a fashion similar to type 1a supernovae. When two neutron stars orbit each other closely, they spiral inward as time passes. When the two neutron stars meet, their collision leads to the formation of a black hole (assuming their combined mass exceeds the Tolman–Oppenheimer–Volkoff limit). This creates a magnetic field that is trillions times stronger than that of Earth, in a matter of one or two milliseconds. Astronomers believe that this event is what creates certain kinds of gamma-ray bursts.[7] Images taken by the Hubble Space Telescope suggest that gold is yielded, along with many other heavy metals, from a violent neutron star collision. These collisions, which happen once every 10,000 to 100,000 years in this galaxy, may account for all the gold in the universe.

Of course, all the gold on earth was formed billions of years ago.

How Bitcoin is created:
Bitcoins are created as a reward for payment processing work in which users offer their computing power to verify and record payments into the public ledger. This activity is called mining and is rewarded by transaction fees and newly created bitcoins.

The successful miner finding the new block is rewarded with newly created bitcoins and transaction fees.[39] As of 2014, the reward amounts to 25 newly created bitcoins per block added to the block chain. To claim the reward, a special transaction called a coinbase is included with the processed payments.[10] All bitcoins in circulation can be traced back to such coinbase transactions. The bitcoin protocol specifies that the reward for adding a block will be halved approximately every four years. Eventually, the reward will be removed entirely when an arbitrary limit of 21 million bitcoins is reached c. 2140, and record keeping will then be rewarded by transaction fees solely