请总结以下内容：2019年，随着区块链技术的发展以及国家对行业监管政策的明朗，区块链行业迎来了一个前所未有的融资热潮。数据显示，2019年全球区块链行业的风险投资金额达到了58亿美元，相比2018年增长了近50%。此外，行业的初创项目和企业快速增多，为整个生态系统带来了更多机会和活力。然而，这一热潮也伴随着一些挑战和风险，特别是在技术应用层面，需要进一步加强和完善。行业进一步发展的关键在于不断提升技术水平和加强行业自律。
user
{
    "year": 2019,
    "development": "blockchain technology advancement and clearer regulatory policies",
    "impact": "unprecedented funding boom",
    "global_investment": {
        "amount": "58 billion USD",
        "increase": "50% compared to 2018"
    },
    "sector_growth": "surge in startup projects and companies",
    "challenges": [
        "technology application challenges",
        "need for further development and improvement"
    ],
    "key_to_future": [
        "enhancing technical capabilities",
        "strengthening industry self-regulation"
    ]
}
assistant