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| 19 | What`s an Online Ad Worth? Blockchain Might Help With That (簡訳:オンライン広告の価値は何ですか？ブロックチェーンがそれを手助けするかもしれない) | ----------- | |
| WSJ.com: WSJD | 2018-06-20 03:10 | ????0? | |
| Three startups propose blockchain-based solutions to rampant fraud in digital advertising. -- ???????? | |||
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