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Newsletters: add bitcoinops#28 (2019-05-28ish)
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‎_contrib/update-newsletter-index-variables‎

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## Christmas special
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_seq_news 2018-12-28 27 1
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## Resume regular publication
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_seq_news 2019-01-08 28 52
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_seq_news 2019-01-08 28 47
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## New Wednesday publication
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_seq_news 2019-05-29 48 100

‎_includes/linkers/newsletters.md‎

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[Newsletter #73]: {{news73}}
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{% assign news74 = "/en/newsletters/2019/11/26/" %}
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[Newsletter #74]: {{news74}}
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{% assign news75 = "/en/newsletters/2019/12/03/" %}
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{% assign news48 = "/en/newsletters/2019/05/29/" %}
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[Newsletter #48]: {{news48}}
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{% assign news49 = "/en/newsletters/2019/06/05/" %}
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[Newsletter #49]: {{news49}}
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{% assign news50 = "/en/newsletters/2019/06/12/" %}
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[Newsletter #50]: {{news50}}
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{% assign news51 = "/en/newsletters/2019/06/19/" %}
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[Newsletter #51]: {{news51}}
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{% assign news52 = "/en/newsletters/2019/06/26/" %}
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[Newsletter #52]: {{news52}}
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{% assign news53 = "/en/newsletters/2019/07/03/" %}
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[Newsletter #53]: {{news53}}
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{% assign news54 = "/en/newsletters/2019/07/10/" %}
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[Newsletter #54]: {{news54}}
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{% assign news55 = "/en/newsletters/2019/07/17/" %}
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[Newsletter #55]: {{news55}}
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{% assign news56 = "/en/newsletters/2019/07/24/" %}
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[Newsletter #56]: {{news56}}
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{% assign news57 = "/en/newsletters/2019/07/31/" %}
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[Newsletter #57]: {{news57}}
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{% assign news58 = "/en/newsletters/2019/08/07/" %}
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[Newsletter #58]: {{news58}}
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{% assign news59 = "/en/newsletters/2019/08/14/" %}
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[Newsletter #59]: {{news59}}
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{% assign news60 = "/en/newsletters/2019/08/21/" %}
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[Newsletter #60]: {{news60}}
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{% assign news61 = "/en/newsletters/2019/08/28/" %}
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[Newsletter #61]: {{news61}}
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{% assign news62 = "/en/newsletters/2019/09/04/" %}
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[Newsletter #62]: {{news62}}
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{% assign news63 = "/en/newsletters/2019/09/11/" %}
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[Newsletter #63]: {{news63}}
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{% assign news64 = "/en/newsletters/2019/09/18/" %}
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[Newsletter #64]: {{news64}}
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{% assign news65 = "/en/newsletters/2019/09/25/" %}
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[Newsletter #65]: {{news65}}
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{% assign news66 = "/en/newsletters/2019/10/02/" %}
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[Newsletter #66]: {{news66}}
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{% assign news67 = "/en/newsletters/2019/10/09/" %}
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[Newsletter #67]: {{news67}}
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{% assign news68 = "/en/newsletters/2019/10/16/" %}
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[Newsletter #68]: {{news68}}
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{% assign news69 = "/en/newsletters/2019/10/23/" %}
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[Newsletter #69]: {{news69}}
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{% assign news70 = "/en/newsletters/2019/10/30/" %}
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[Newsletter #70]: {{news70}}
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{% assign news71 = "/en/newsletters/2019/11/06/" %}
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[Newsletter #71]: {{news71}}
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{% assign news72 = "/en/newsletters/2019/11/13/" %}
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[Newsletter #72]: {{news72}}
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{% assign news73 = "/en/newsletters/2019/11/20/" %}
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[Newsletter #73]: {{news73}}
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{% assign news74 = "/en/newsletters/2019/11/27/" %}
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[Newsletter #74]: {{news74}}
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{% assign news75 = "/en/newsletters/2019/12/04/" %}
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[Newsletter #75]: {{news75}}
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{% assign news76 = "/en/newsletters/2019/12/10/" %}
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{% assign news76 = "/en/newsletters/2019/12/11/" %}
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[Newsletter #76]: {{news76}}
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{% assign news77 = "/en/newsletters/2019/12/17/" %}
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{% assign news77 = "/en/newsletters/2019/12/18/" %}
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[Newsletter #77]: {{news77}}
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{% assign news78 = "/en/newsletters/2019/12/24/" %}
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{% assign news78 = "/en/newsletters/2019/12/25/" %}
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[Newsletter #78]: {{news78}}
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{% assign news79 = "/en/newsletters/2019/12/31/" %}
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{% assign news79 = "/en/newsletters/2020/01/01/" %}
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[Newsletter #79]: {{news79}}
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{% assign news80 = "/en/newsletters/2020/01/08/" %}
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[Newsletter #80]: {{news80}}
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{% assign news81 = "/en/newsletters/2020/01/15/" %}
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[Newsletter #81]: {{news81}}
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{% assign news82 = "/en/newsletters/2020/01/22/" %}
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[Newsletter #82]: {{news82}}
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{% assign news83 = "/en/newsletters/2020/01/29/" %}
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[Newsletter #83]: {{news83}}
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{% assign news84 = "/en/newsletters/2020/02/05/" %}
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[Newsletter #84]: {{news84}}
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{% assign news85 = "/en/newsletters/2020/02/12/" %}
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[Newsletter #85]: {{news85}}
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{% assign news86 = "/en/newsletters/2020/02/19/" %}
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[Newsletter #86]: {{news86}}
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{% assign news87 = "/en/newsletters/2020/02/26/" %}
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[Newsletter #87]: {{news87}}
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{% assign news88 = "/en/newsletters/2020/03/04/" %}
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[Newsletter #88]: {{news88}}
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{% assign news89 = "/en/newsletters/2020/03/11/" %}
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[Newsletter #89]: {{news89}}
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{% assign news90 = "/en/newsletters/2020/03/18/" %}
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[Newsletter #90]: {{news90}}
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{% assign news91 = "/en/newsletters/2020/03/25/" %}
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[Newsletter #91]: {{news91}}
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{% assign news92 = "/en/newsletters/2020/04/01/" %}
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[Newsletter #92]: {{news92}}
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{% assign news93 = "/en/newsletters/2020/04/08/" %}
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[Newsletter #93]: {{news93}}
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{% assign news94 = "/en/newsletters/2020/04/15/" %}
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[Newsletter #94]: {{news94}}
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{% assign news95 = "/en/newsletters/2020/04/22/" %}
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[Newsletter #95]: {{news95}}
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{% assign news96 = "/en/newsletters/2020/04/29/" %}
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[Newsletter #96]: {{news96}}
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{% assign news97 = "/en/newsletters/2020/05/06/" %}
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[Newsletter #97]: {{news97}}
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{% assign news98 = "/en/newsletters/2020/05/13/" %}
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[Newsletter #98]: {{news98}}
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{% assign news99 = "/en/newsletters/2020/05/20/" %}
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[Newsletter #99]: {{news99}}
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{% assign news100 = "/en/newsletters/2020/05/27/" %}
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[Newsletter #100]: {{news100}}
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{% assign news101 = "/en/newsletters/2020/06/03/" %}
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[Newsletter #101]: {{news101}}
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{% assign news102 = "/en/newsletters/2020/06/10/" %}
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[Newsletter #102]: {{news102}}
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{% assign news103 = "/en/newsletters/2020/06/17/" %}
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[Newsletter #103]: {{news103}}
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{% assign news104 = "/en/newsletters/2020/06/24/" %}
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[Newsletter #104]: {{news104}}
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{% assign news105 = "/en/newsletters/2020/07/01/" %}
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[Newsletter #105]: {{news105}}
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{% assign news106 = "/en/newsletters/2020/07/08/" %}
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[Newsletter #106]: {{news106}}
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{% assign news107 = "/en/newsletters/2020/07/15/" %}
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[Newsletter #107]: {{news107}}
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{% assign news108 = "/en/newsletters/2020/07/22/" %}
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[Newsletter #108]: {{news108}}
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{% assign news109 = "/en/newsletters/2020/07/29/" %}
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[Newsletter #109]: {{news109}}
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{% assign news110 = "/en/newsletters/2020/08/05/" %}
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[Newsletter #110]: {{news110}}
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{% assign news111 = "/en/newsletters/2020/08/12/" %}
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[Newsletter #111]: {{news111}}
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{% assign news112 = "/en/newsletters/2020/08/19/" %}
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[Newsletter #112]: {{news112}}
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{% assign news113 = "/en/newsletters/2020/08/26/" %}
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[Newsletter #113]: {{news113}}
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{% assign news114 = "/en/newsletters/2020/09/02/" %}
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[Newsletter #114]: {{news114}}
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{% assign news115 = "/en/newsletters/2020/09/09/" %}
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[Newsletter #115]: {{news115}}
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{% assign news116 = "/en/newsletters/2020/09/16/" %}
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[Newsletter #116]: {{news116}}
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{% assign news117 = "/en/newsletters/2020/09/23/" %}
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[Newsletter #117]: {{news117}}
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{% assign news118 = "/en/newsletters/2020/09/30/" %}
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[Newsletter #118]: {{news118}}
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{% assign news119 = "/en/newsletters/2020/10/07/" %}
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[Newsletter #119]: {{news119}}
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{% assign news120 = "/en/newsletters/2020/10/14/" %}
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[Newsletter #120]: {{news120}}
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{% assign news121 = "/en/newsletters/2020/10/21/" %}
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[Newsletter #121]: {{news121}}
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{% assign news122 = "/en/newsletters/2020/10/28/" %}
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[Newsletter #122]: {{news122}}
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{% assign news123 = "/en/newsletters/2020/11/04/" %}
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[Newsletter #123]: {{news123}}
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{% assign news124 = "/en/newsletters/2020/11/11/" %}
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[Newsletter #124]: {{news124}}
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{% assign news125 = "/en/newsletters/2020/11/18/" %}
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[Newsletter #125]: {{news125}}
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{% assign news126 = "/en/newsletters/2020/11/25/" %}
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[Newsletter #126]: {{news126}}
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{% assign news127 = "/en/newsletters/2020/12/02/" %}
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[Newsletter #127]: {{news127}}
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{% assign news128 = "/en/newsletters/2020/12/09/" %}
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[Newsletter #128]: {{news128}}
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{% assign news129 = "/en/newsletters/2020/12/16/" %}
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[Newsletter #129]: {{news129}}
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{% assign news130 = "/en/newsletters/2020/12/23/" %}
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[Newsletter #130]: {{news130}}
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{% assign news131 = "/en/newsletters/2020/12/30/" %}
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[Newsletter #131]: {{news131}}
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{% assign news132 = "/en/newsletters/2021/01/06/" %}
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[Newsletter #132]: {{news132}}
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{% assign news133 = "/en/newsletters/2021/01/13/" %}
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[Newsletter #133]: {{news133}}
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{% assign news134 = "/en/newsletters/2021/01/20/" %}
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[Newsletter #134]: {{news134}}
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{% assign news135 = "/en/newsletters/2021/01/27/" %}
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[Newsletter #135]: {{news135}}
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{% assign news136 = "/en/newsletters/2021/02/03/" %}
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[Newsletter #136]: {{news136}}
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{% assign news137 = "/en/newsletters/2021/02/10/" %}
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[Newsletter #137]: {{news137}}
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{% assign news138 = "/en/newsletters/2021/02/17/" %}
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[Newsletter #138]: {{news138}}
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{% assign news139 = "/en/newsletters/2021/02/24/" %}
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[Newsletter #139]: {{news139}}
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{% assign news140 = "/en/newsletters/2021/03/03/" %}
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{% assign news141 = "/en/newsletters/2021/03/10/" %}
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[Newsletter #141]: {{news141}}
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{% assign news142 = "/en/newsletters/2021/03/17/" %}
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{% assign news143 = "/en/newsletters/2021/03/24/" %}
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{% assign news144 = "/en/newsletters/2021/03/31/" %}
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{% assign news145 = "/en/newsletters/2021/04/07/" %}
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{% assign news146 = "/en/newsletters/2021/04/14/" %}
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[Newsletter #146]: {{news146}}
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{% assign news147 = "/en/newsletters/2021/04/21/" %}
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[Newsletter #147]: {{news147}}

‎_includes/references.md‎

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{% comment %}<!-- reused (or likely to be reused) external links, alphabetical order -->{% endcomment %}
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[bip-anyprevout]: https://github.com/ajtowns/bips/blob/bip-anyprevout/bip-anyprevout.mediawiki
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[bip-coshv]: https://github.com/JeremyRubin/bips/blob/op-checkoutputshashverify/bip-coshv.mediawiki
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[bip-schnorr]: https://github.com/sipa/bips/blob/bip-schnorr/bip-schnorr.mediawiki
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[bip-taproot]: https://github.com/sipa/bips/blob/bip-schnorr/bip-taproot.mediawiki
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[bip-tapscript]: https://github.com/sipa/bips/blob/bip-schnorr/bip-tapscript.mediawiki

‎_includes/specials/bech32/11-only-bech32.md‎

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[Last week][Newsletter #47], we described one of the costs of not
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upgrading to bech32 sending support---users might think your service is
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out-of-date and so look for alternative services. This week, we'll look
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at the stronger form of that argument: wallets which already can **only
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receive to bech32 addresses.** If the users of these wallets
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want to receive a payment or make a withdrawal from your service, and
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you don't yet support sending to bech32 addresses, they'll either have
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to use a second wallet or have to use one of your competitors.
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<!-- Wasabi source: their documentation; see provided links -->
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- [Wasabi wallet][], known for its privacy-enhancing coinjoin mode and
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mandatory user coin control, [only accepts payments to bech32
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addresses][wasabi bech32 only]. This relatively-new wallet was
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designed around compact block filters similar to those described in
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[BIP158][]. However, since all of the filters are served by Wasabi's
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infrastructure, the [decision was made]["only generate filters
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regarding bech32 addresses"] to minimize filter size by only
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including P2WPKH outputs and spends in the filter. This means the
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wallet can't see payments to other output types, including P2SH for
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P2SH-wrapped segwit addresses.
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<!-- Trust wallet source: private conversation harding had with a tester
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of this wallet in Februray 2019 -->
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- [Trust wallet][] is a fairly new proprietary wallet owned by the
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Binance cryptocurrency exchange and compatible with Android and iOS.
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As a new wallet, they didn't need to implement legacy address
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receiving support, so they only implemented segwit. That makes bech32
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the only supported way to send bitcoins to this wallet.
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<!-- Electrum source: harding tested default download from their website 2019-05-27 -->
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- [Electrum][] is a popular wallet for desktop and mobile. When
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creating a new wallet seed, you can choose between a legacy wallet and
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a segwit wallet, with segwit being the current default. Users
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choosing a segwit wallet seed will only be able to generate bech32
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addresses for receiving. Electrum warns users about the compatibility
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issues this may create with software and services that haven't
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upgraded to bech32 sending support yet:
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![Dialog in Electrum allowing the user to choose the address type
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and warning them that some services may not support bech32
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addresses](/img/posts/2019-05-electrum-choose-wallet-type.png)
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Please note that it's neither required nor recommended for wallet
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authors to create a new seed in order to support a new address
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format. Other wallets, such as Bitcoin Core 0.16.0 and above, can
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produce legacy, p2sh-segwit, and bech32 addresses all from the same
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seed---the user just needs to specify which address type they want
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(if they don't want the default).
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As time goes on, we expect more new wallets to only implement receiving
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to the current best address format. Today that's v0 segwit addresses for
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P2WPKH and P2WSH using bech32, but if Taproot is adopted, it will use v1
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segwit addresses that will [also use bech32][news45 bech32]. The longer your service
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delays implementing bech32 sending support, the more chance you'll have
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of losing customers because they can't request payments from you using
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their preferred wallet.
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[bech32 easy]: {{news38}}#bech32-sending-support
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[wasabi bech32 only]: https://github.com/zkSNACKs/WalletWasabi/blob/master/WalletWasabi.Documentation/FAQ.md#my-wallet-cant-send-to-bech32-addresses---what-wallets-can-i-use-instead
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["only generate filters regarding bech32 addresses"]: https://github.com/zkSNACKs/Meta/blob/master/README.md#wasabi-wallet-under-the-hood
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[wasabi wallet]: https://wasabiwallet.io/
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[trust wallet]: https://trustwallet.com/
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[electrum]: https://electrum.org/
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[news45 bech32]: {{news45}}#bech32-sending-support

‎_posts/en/2019-03-19-bech32-sending-support.md‎

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{% include specials/bech32/10-snooze-lose.md %}
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## Wallets that only support bech32 receiving
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*Originally published in [Newsletter #48][].*
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{% include specials/bech32/11-only-bech32.md %}
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## Footnotes
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{:.no_toc}

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