GRAILSTONE: A Living Crystal on Bitcoin. Grailstone is a 3D, interactive form, born from the sacrifice of 3 Raystones.Each piece evolves and transforms guided by Bitcoin: transaction count, timestamp, blockhash, and more. With every 128 blocks, new shapes emerge as it grows over a total of 8192 blocks, which is approximately 8 weeks of human time. Then it will reach its full maturity and reveal its full potential. The evolution of Raystone is here, and Grailstone is coming to life.