Hi-Ether Meetup Block#0 LTトークン運用の三要素(発行・移転・焼却)

by Shu Kobuchi

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)J&UIFS.FFUVQ#MPDL-5 τʔΫϯӡ༻ͷࡾཁૉ ʢൃߦɾҠసɾফ٫ʣ খᔹपʢ4IV,PCVDIJʣ

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ࣗݾ঺հ w খᔹप 4IV,PCVDIJ w ೥ྸɿY'ࡀʢࠓ೥ͰYࡀʂʂʣ w ࠷ऴֶྺɿϒϩοΫνΣʔϯେֶߍΤϯδχΞ ϒϩϯζίʔε ̐ظੜ w ΩϡʔϒγεςϜͷاը෦໳  ɹɾϒϩοΫνΣʔϯਪਐڠձ #$$$ ձһ  ɹɹɹԾ૝௨՟;&/ࣾձ࣮ݧʹࢀՃ  ɹɾϒϩοΫνΣʔϯϋϒίʔϙϨʔτձһ  ɹɾϏϤϯυϒϩοΫνΣʔϯਖ਼ձһ

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ൃߦͱҠస w ൃߦͱҠస͸ඞਢػೳ w 0QFO;FQQFMJOͷ#BTJD5PLFOTPMΛࠓճͷखຊʹ  IUUQTHJUIVCDPN0QFO;FQQFMJO[FQQFMJOTPMJEJUZ CMPCNBTUFSDPOUSBDUTUPLFO&3$ #BTJD5PLFOTPM

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ফ٫ʢম٫ʣ w ফ٫͕ඞཁͳ͜ͱ΋͋Δ w 0QFO;FQQFMJOͷ#VSOBCMF5PLFOTPMΛࠓճͷखຊʹ  #VSOBCMF5PLFOΛ#BTJD5PLFOʹΫϥεܧঝͤ͞Δ  IUUQTHJUIVCDPN0QFO;FQQFMJO[FQQFMJOTPMJEJUZ CMPCNBTUFSDPOUSBDUTUPLFO&3$ #VSOBCMF5PLFOTPM

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ίʔυྫ pragma solidity ^0.4.18; library SafeMath { … } contract BasicToken { … } contract BurnableToken is BasicToken { event Burn(address indexed burner, uint256 value); function burn(uint256 _value) public { require(_value <= balances[msg.sender]); address burner = msg.sender; balances[burner] = balances[burner].sub(_value); totalSupply = totalSupply.sub(_value); Burn(burner, _value); } }

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#VSOલ

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#VSOޙ

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ফ٫Λ͢Δҙຯ w ᶃൃߦऀʹ໭͖ͬͯͨ࠴݊Λ࢖༻ࡁΈʹ͢Δ w ᶄଞϓϥοτϑΥʔϜ΁ͷՁ஋ͷҠస  ɹ୯ํ޲ʢෆՄٯʣͷ৔߹͸ʮ1SPPGPG#VSOʯ

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ᶃ࠴ݖΛ࢖༻ࡁΈʹ͢ Δ

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ωΠςΟϒ௨՟ʹ͸ൃߦओମ ͕ͳ͍ w &5)΍#5$ͳͲωΠςΟϒ௨՟ʹ͸ൃߦओମ͕ͳ͍ w ࠴ݖ࠴຿ؔ܎ΛఆٛͰ͖ͳ͍ ϚΠφʔใुͰ৽نੜ੒ ૹۚऀͷిࢠॺ໊͕ͳ͍ YFDBCF BGCDCG YBE FFDG 59 3FXBSE ૹۚΞΧ΢ϯτͷిࢠॺ໊ΛؚΉ YCDEE CEDFB #MPDL

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ಠࣗτʔΫϯͷൃߦओମ w ಠࣗτʔΫϯʹ͸ൃߦओମ͕ଘࡏ͢Δ w ࠴ݖ࠴຿ؔ܎ΛఆٛͰ͖Δ 59 ൃߦ࣌ʹൃߦΞΧ΢ϯτͷ ిࢠॺ໊ΛؚΉ Y⒎CBFG CGFFF CEEF $SFBUF $POUSBDU

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ಠࣗτʔΫϯ͸࠴݊ w ࢠڙͷ͓ख఻͍݊ɾݞୟ͖݊͸࿑ಇ͢Δ͜ͱΛ໿ଋ͍ͯ͠ ͯɺࣗ෼ʹ͸ෛͷՁ஋ w اۀϙΠϯτ͸ෛ࠴ܭ্ w ೔ຊۜߦ݊͸೔ຊۜߦͰෛ࠴ܭ্ʢଞࠃͷதԝۜߦ΋ෛ ࠴ܭ্͕Ұൠతʣ

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࠴͕݊໭͖ͬͯͨΒ#VSO w ൃߦऀͷखݩʹ໭͖ͬͯͨΒ#VSO w ࢴͰͷྫʣ  ίϯαʔτνέοτͷ൒݊Λ੾Γ཭͢  ྻंͷݕࡳͰ੾ූʹԡҹɾύϯν݀  ੾खͷফҹ

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εϚʔτίϯτϥΫτ ͰͷΠϝʔδ ᶄ&5)ૹۚ τʔΫϯൃߦऀ ʢαʔϏεఏڙऀʣ ᶃίϯτϥΫτσϓϩΠ ʢτʔΫϯఆٛʣ ᶄτʔΫϯൃߦ ᶄτʔΫϯૹ৴ ᶅτʔΫϯૹ৴ ᶅαʔϏεఏڙ ᶅτʔΫϯফ٫

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ᶄଞϓϥοτϑΥʔϜ ΁ͷՁ஋Ҡస

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ҟͳΔϓϥοτϑΥʔϜؒͰ ͷՁ஋ͷҠస w #$$$Ծ૝௨՟ʮ;FOʯࣾձ࣮ݧୈ̍ϑΣʔζϨϙʔτ  IUUQCDDDHMPCBMKBBSUJDMFTIUNM

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1SPPGPG#VSOʢ୯ํ޲ʣ w $PVOUFS1BSUZ 9$1 ൃߦͰ1SPPGPG#VSOͳͲ  ˞9$1͸ΦϯνΣʔϯʹ৐Δ ΦϯνΣʔϯ ʢϒϩοΫνΣʔϯʣ τʔΫϯ ϖά τʔΫϯൃੜ ফ٫ 1SPPGPG#VSO ΦϑνΣʔϯͳͲ

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ΦϑνΣʔϯͰͷ߆ଋ w ϥΠτχϯάωοτϫʔΫ͸ΦϯνΣʔϯ্ͰίΠϯΛϩ οΫʢ߆ଋʣ w ૒ํ޲ϖάαΠυνΣʔϯ΋ΦϯνΣʔϯͰίΠϯΛϩο Ϋ ΦϯνΣʔϯ ʢϒϩοΫνΣʔϯʣ τʔΫϯ ϖά τʔΫϯൃੜ ߆ଋ ߆ଋղআ ফ٫ ϖά ΦϑνΣʔϯ

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͝ਗ਼ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠ w !TIV@LPC w TIVLPCVDIJ w ۚ ౔ 04$౦ژ!໌੕େֶ w ೔ຊ҉߸௨՟Ϣʔβձग़లʂ w ೔ ηϛφʔʮ#JUDPJO$PSFೖ໳ʯɹ୲౰ɿখᔹ w IUUQTXXXPTQOKQPTDTQSJOHNPEVMFTFHVJEFFWFOUQIQ FJE