By Lucy Harley-McKeown Bitcoin’s price continued to rise on Tuesday, heading higher on optimism about progress in the listing of a spot bitcoin exchange traded fund (ETF) in the US. The digital asset was up as much as 13 per cent on Tuesday afternoon, trading at around $34,450 — its highest point since May last year. The typically volatile asset briefly pushed above $35,000 (£28,600) this morning, buoyed by news that a federal appeals court had set in stone a victory for Grayscale Investments in its ETF bid — following a raft of objections by the Securities and Exchange Commission. The regulat…