Vitalik Buterin ethereum founder
Ethereum cofounder Vitalik Buterin.
  • Crypto token ether rose to break through $2,000 Thursday and was trading at an 11-month high Friday.
  • The second-biggest cryptocurrency gained after Ethereum completed long-awaited changes to its network.
  • The "Shanghai" upgrade means ether holders can now withdraw tokens they locked up in return for rewards.

Ethereum's native token ether has surged to top $2,000 and is trading at an 11-month high after the blockchain network completed a long-awaited upgrade that unlocks some investors' tokens.

The cryptocurrency's price jumped 5% Thursday on the previous 24 hours. It was up about 6% early Friday, trading at just over $2,110 at last check.