2月27日消息，随着Polkadot网络首次减半进入倒计时，其原生代币DOT近七日累计上涨约27%。本次减半定于3月14日举行，届时年度发行量将从约1.2亿枚降至5500万枚，供应缩减50%，市场对DOT稀缺性的预期迅速升温。
根据此前社区决议，DOT总发行上限被设定为21亿枚，并采用逐步递减机制，每两年进行一次减量。3月12日将率先生效一系列协议升级，包括引入动态分配池（DAP）、调整质押与验证者经济模型等。未来被销毁及罚没的代币将转入DAP，由治理体系统一调配。
新规则要求验证者至少自质押1万枚DOT，并设置不低于10%的佣金比例，同时引入StakingOperator代理类型，使机构质押者可分离托管与节点控制。提名人解绑周期将由28天缩短至约48小时，在满足最低自质押标准后，其质押资产不再承担罚没风险。此举被视为提升网络安全性与流动性的关键步骤。
价格方面，DOT此前在1.25至1.35美元区间震荡后放量突破，一度冲高至1.75美元，随后回落至1.60美元附近盘整。截至发稿，报价约1.62美元，24小时小幅回调。
此外，ETF进展亦受到关注。21Shares与Grayscale Investments均已向U.S. Securities and Exchange Commission提交相关现货ETF申请，目前仍在审核阶段。若获批，或为Polkadot生态带来新增资金渠道。减半预期叠加潜在ETF催化，DOT后续走势成为市场焦点。
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