British investor recovered 61 BTC after proving ownership of funds held through collapsed exchange Intersango.His £1,500 investment produced recovered bitcoin valued around £3.3m after more than twelve years inaccessible.CEL Solicitors says it identified over 5,500 BTC potentially connected to other former Intersango customers.Claimants need historic bank statements, emails or exchange records demonstrating their individual bitcoin ownership rights.The law firm has not publicly disclosed the identified wallet address or complete recovery methodology yet.