<https://blockcast.it/2021/07/16/ckxpress-data-backup-mechanism-over-a-decentralized-network/>
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"區塊鏈社會學 | 去中心化內容備份：無需硬碟，但要共識"
<https://blockcast.it/2021/07/16/ckxpress-data-backup-mechanism-over-a-decentralized-network/>