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Bashi mara kyau ɗaya, maki biyar na gane asara: wa ke ɗaukar asarar rumbunan ajiya na DeFi?

Daga Morpho zuwa Aave: irin wannan bashin mara kyau, maki biyar na gane asara, yanke hukunci wanda a ƙarshe zai ɗauki asarar ajiyar DeFi.

An rubuta ta: @definikos

An tattara ta: AididiaoJP, Foresight News

Taswirar hanyar asarar ajiya ba ta amsa "shin za a sami asara ba." Tana amsa ne kawai abin da ke faruwa bayan asara: lokacin da aka gane ta a kan litattafai, wane ma'auni ne zai fara shan ta, waɗanne matakan shanyewa na tsaka-tsaki ne suke akwai, abin da masu ajiya za su gani a ƙarshe, da wanda ba zai iya fita ba.

Kowane ƙaramin asusu na dabarun ya kamata ya cika layi ɗaya na wannan tebur kafin ajiya ta farko.

A ɗauka cewa akwai dala miliyan 3 na bashi mara kyau a kan dala miliyan 100 na ajiya.

A cikin keɓaɓɓen kasuwar Morpho, a lokacin da aka yi cinikin ƙarshen jeri na jingina, duk masu ajiya nan take suna ɗaukar asarar kashi 3%.

A cikin haɗaɗɗen tafkin Aave, wanda aka haɗa gaba ɗaya ta hanyar kadara, ma'aunin aToken na masu ajiya ba ya motsi a kan litattafai. Ana share bashi mara kyau, tafkin ya rubuta gibin, kuma ana yanke hannun jarin buffer a cikin Umbrella. Duk wani rashi da ya rage bayan an rufe shi masu ajiya ne ke ɗauka a matsayin rashin biyan kuɗi na saura, maimakon a rage ma'aunin ajiya kai tsaye daidai gwargwado. Lura: Umbrella ita ce hanyar buffer na bashi mara kyau ta Aave: masu amfani suna ba da kadara don samun lada, a kan farashin cewa lokacin da yarjejeniyar ta sami bashi mara kyau, ana yanke hannun jarin da ya dace don cike gibin.

A cikin ajiyar da aka tsara a ƙarƙashin Morpho Vault V1.1, farashin hannun jari ba ya motsi kwata-kwata, kuma masu ajiya na ƙarshe da suka gudu suna barin asarar ga waɗanda suka rage.

Ana ƙididdige ajiyar da ke cikin jerin gwano ta hanyar rahotannin ƙima da oracle ke gabatarwa lokaci-lokaci. Har sai an fitar da ƙima ta gaba, babu abin da ke canzawa a kan litattafai. Idan raguwar ƙima ta wuce kewayon da aka riga aka sa na tuhuma, ana keɓe rahoton kuma a daskare ajiyar gaba ɗaya.

A cikin tsarin da aka raba matakai tare da rukunin ƙasa na kashi 10%, duk bashin mara kyau na dala miliyan 3 ya faɗi kan rukunin ƙasa na dala miliyan 10, wanda ya yi asarar kashi 30%, yayin da rukunin farko ba a shafa ba.

Adadin asarar ɗaya ne a kowane lokaci. Abin da ke canzawa shi ne wace hanya asarar za ta bi da kuma lokacin da aka gane ta. Lokacin da aka gane ta, kamar wane mataki ta faɗa, shi ne ke ƙayyade wanda zai biya a ƙarshe.

Muddin asara ta riga ta faru amma ba a rubuta ta ba tukuna, waɗanda za su iya fita a tsohon farashi za su matsa rabonsu na asarar kan waɗanda suka rage.

Wannan taswira tana tambayar kowace tsari tambayoyi guda biyar ɗaya:

Abin da ke jawo: Wane lamari ne ke sa a gane asarar a kan litattafai?

"Kadara ta yi asara a zahiri" bai isa ba; dole ne wani lamari na kan sarkar ya rubuta asarar cikin lissafin. Cinikin bashi mara kyau, rahotannin ƙima, raguwar daraja, da ƙuri'un shugabanci duk na iya zama abin jawo. Idan abin da ke jawo bai faru ba, asarar ta kasance a bayan litattafai.

Farkon faɗuwa: Wane ma'auni ne asarar ta fara faɗuwa a kai?

Bayan an gane asarar, wace lamba ce ke canzawa da farko. Zai iya zama jimillar ajiyar kasuwa, gibin tafkin, farashin hannun jarin ajiya, ko wani rukunin ƙasa. Wuraren faɗuwa na farko daban-daban suna nufin masu ɗaukar nauyi daban-daban a ƙasa.

Matakan shanyewa: Tsakanin wurin faɗuwa na farko da masu ajiya, me ke tsayawa a gaba?Asara ba lallai ba ne ta faɗo kai tsaye kan masu ajiya. A tsakani ana iya samun ramuwa, hannun jari mai yuwuwar yankewa, matakan da ke ƙasa, da matakan asara na farko. Yawan waɗannan matakan, ƙarancin asarar da masu ajiya ke gani; sai lokacin da matakan suka ƙare ne asarar ke isa ga masu ajiya.

Isarwa: Me masu ajiya suke gani a zahiri?

Ayyukan littafi da asara ta gaske na iya zama ba abu ɗaya ba. Masu ajiya na iya ganin farashin rabo ya faɗi, jerin fansho ya daskare, ko littattafan har yanzu suna nuna ƙimar fuska yayin da da'awar da ke bayanta ta riga ta lalace.

Lokacin gane asara: Yaushe ake lissafta wannan asarar?

Ana gane ta nan take a cikin wannan block ɗin, ko tana jira mu'amala ta gaba, rahoto na gaba, ƙuri'ar mulki, ko ma ba a taɓa gane ta ba? Yawan jinkirin gane ta, yawan mutanen da ke da damar fita a tsohon farashi su bar asarar ga waɗanda suka rage daga baya.

Muddin oracle ɗin yana ci gaba da faɗin ƙimar temba a ƙimar fuska, tsarin ba zai iya ganin cewa tembar ta riga ta ragu ba, kuma lissafin basusar da ba ta da kyau ba zai tashi ba. Ba za a rubuta asarar ba kuma za ta kasance a bayan littattafai har sai wani ya tilasta lissafi ko ya tilasta sabunta farashi.

Kasuwanni keɓaɓɓu

A cikin kasuwar Morpho keɓaɓɓiyar, bayan mai lissafi ya karɓi rukunin tembar mai bashi na ƙarshe, idan bashin bai cika biya ba, ragowar ɓangaren ana share shi a cikin wannan kira ɗin kuma duk masu ajiya a wannan kasuwar suna ɗaukar nauyinsa daidai gwargwado.

Ana iya rubuta dabarar basusar da ba ta da kyau kamar haka:

BD = D − C·p / LIF

inda D shine bashi, C·p shine ƙimar temba, kuma LIF shine ƙarfafin lissafi.

Misali: bashi dala miliyan 10, farashin temba ya faɗi zuwa dala miliyan 7.3, LIF shine 1.044, LLTV shine 86%:

10 − 7.3 / 1.044 ≈ dala miliyan 3, ko kashi 3% na kasuwar dala miliyan 100.

Tsakanin basusar da ba ta da kyau da masu ajiya, babu ajiya ko asusu da ke tsayawa gaba. Asarar tana faɗowa kai tsaye kan masu ajiya a wannan kasuwar. A ka'ida, wurin gane asarar shine wannan block ɗin da lissafi ke faruwa. Amma wannan yana buƙatar sharuɗɗa uku a cika su lokaci ɗaya:

Na farko, dole oracle ɗin ya tabbatar da cewa matsayin ya riga ya zama mara isasshen temba kuma mara lafiya;

Na biyu, dole mai lissafi ya yi la'akari da cewa ƙarshen tembar har yanzu ya cancanci karɓa, ba tare da yin asara ba bayan cire ladan lissafi;

Na uku, kiran oracle ɗin ba dole ba ne ya koma baya.

Idan ɗaya daga cikin sharuɗɗan uku ya ɓace, ba za a gane asarar a wannan lokacin ba kuma tana iya kasancewa a bayan littattafai har abada, ta zama "ba a taɓa gane ta ba."

Tafkuna na tarayya

Tun daga v3.3, Aave yana ƙone ragowar bashin idan tembar asusu ya koma sifili bayan lissafi kuma bashi ya rage, kuma yana rubuta gibin a kan ajiyar.

Ana lissafta wannan gibin daban kuma baya canza farashin musayar aToken kai tsaye. Don haka lokacin da masu ajiya suka buɗe asusunsu, ma'aunin da suke gani har yanzu shine ainihin ƙimar fuskar, kuma baya raguwa nan take.Umbrella sannan ya cika ramin, a wannan tsari: na farko, alawus ɗin daidaita gibin da DAO ta riga ta tanada, wanda ke aiki a matsayin farkon layin buffer; idan hakan bai isa ba, UmbrellaCore yana rage aTokens ɗin da masu amfani suka stake a cikin wannan ɗakin kadara ta atomatik don cika sauran gibin.

Lura cewa ko da mai stake ya riga ya nemi fita kuma yana jiran a cikin lokacin sanyaya na kwanaki 20 don buɗewa, ana iya rage wannan stake ɗin. Lokacin sanyaya ba lokacin tsaro ba ne.

Abin da ya rage bayan waɗannan layuka biyu shine rashin iya biyan kuɗi na saura, wanda kawai gwamnati za ta iya sake samar da jari.

Ana iya rubuta gibin da ba a rufe na kowane mai ajiya kamar haka:

h = max(0, B − O − Z) / S

inda B shine bashi mara kyau, O shine daidaitawa, Z shine stake ɗin da za a iya ragewa, kuma S shine jimillar ajiya.

Misali: bashi mara kyau na dala miliyan 5, daidaitawa na dala 100,000, stake na dala miliyan 3, ajiya na dala miliyan 500:

(5 − 0.1 − 3) / 500 = 0.38%.

0.38% shine kawai matsakaicin gibin da aka lissafta; ba a cire 0.38% kai tsaye daga asusun kowa ba. Muddin har yanzu akwai kuɗi a cikin ɗakin, ana biyan cirewa 1:1, kuma waɗanda suka fara fita suna samun kuɗinsu na asali. Ramin baya ɓacewa; ana barin shi ga waɗanda ba su fita ba tukuna. Duk wanda har yanzu yana riƙe da matsayin ajiya a ƙarshe zai ɗauki cikakken asarar da ba a rufe ba.

Curated vaults suna zaune a saman kasuwanni keɓaɓɓu. Kasuwa ce ke da alhakin gane asarar, kuma sigar vault ce ke ƙayyade lokacin da farashin rabo zai ga asarar.

Vault V1.0: Ana gane asarar nan take, kuma kowa yana raba ta daidai gwargwado nan take.

Da zarar an yi liquidation na bashi mara kyau, ana yanke farashin rabo nan take. Misali, idan vault na dala miliyan 100 ya yi asarar dala miliyan 4, farashin rabo nan take ya faɗi 4%. Duk masu riƙe na yanzu suna ɗaukar ta daidai gwargwado, ko kun gudu ko a'a.

Vault V1.1: Ana rubuta asarar amma ba ta canza farashin; na ƙarshe da ya fita yana ɗaukar ta.

Lokacin da bashi mara kyau ya faru, ana rubuta asarar a cikin asusun lostAssets, amma farashin rabo baya motsi. Waɗanda suka fita da wuri har yanzu ana biyan su da tsohon farashi, wato suna fita da kuɗin asali. Ramin yana zama a cikin vault, kuma waɗanda ba su fita ba a ƙarshe suna ɗaukar shi. Sai dai idan mai kula ya cika gibin da kuɗinsa.

Vault V2: Ana gane shi ne kawai a lokacin tara riba na gaba, lokacin da aka gano ainihin kadarorin sun yi ƙasa da kadarorin da aka rubuta.

V2 baya rubuta a lokacin liquidation na bashi mara kyau, amma yana jira har zuwa zagayen tara riba na gaba. A wannan lokacin tsarin yana kwatanta ainihin kadarorin adapter da jimillar kadarorin da aka rubuta na vault: idan ainihin kadarorin sun riga sun yi ƙasa da jimillar kadarorin da aka rubuta, ana rubuta bambancin a matsayin asara.

Jinkiri yana mai da asarar layi. A ce X an jinkirta, kadarorin vault A ne, kuma W an cire da kuɗin asali kafin a gane; asarar da waɗanda suka rage za su ɗauka ita ce:

h = X / (A − W)

Misali: vault na dala miliyan 100 ya yi asarar dala miliyan 4, kuma an fara cire dala miliyan 60:

4 / 40 = 10%, alhali idan an rubuta nan take zai kasance 4% kawai.V2 shima yana da nasa sigar. Kafin kasuwa ta gane bashin da ba a biya ba, rancen bashin da ba a biya ba yana ci gaba da tara riba, wanda ke tura farashin hannun jari sama. Sabbin masu ajiya suna shiga a wannan farashin, kuma wadanda suka fita da wuri suna fitar da ribar da ba ta da wata kadara da ta dace da ita. Sanya maxRate zuwa 0 zai iya dakatar da kara tarawa, amma abin da aka riga aka tara ba za a iya dawo da shi ba.

A kan gine-ginen vault da ke da ikon sarrafa dabarun, babu wani wuri da ke rubuta asara kai tsaye cikin farashin hannun jari. Asarar tana sauka ne kawai a rahoton na gaba: lokacin da mai gabatar da rahoto ya kimanta matsayi abu biyu, yana rage farashin matsayin. Sannan sigogin tsaro suna tantance yadda za a tafiyar da shi.

Idan sauyin ya fada cikin kewayon da ake zargi, ana karbarsa kamar yadda aka saba. Idan ya fada tsakanin iyakar da ake zargi da mafi girman karkacewa: ana keɓe rahoton, kuma ajiya, fansa, da kudade duk an daskare su har sai wani mai bita mai zaman kansa ya amince.

Idan ya wuce mafi girman karkacewa: sake dawowa ta atomatik.

Duk wani rukuni na fansa da aka yi farashi bisa rahoton da bai riga ya hada da asarar ba har yanzu yana biya a tsohon farashi.

Babban vault yana saka kudi cikin kananan vault, kuma kananan vault din suna zuba jari cikin kadarorin da ke karkashin su. Bayan wani karamin vault ya sami asara, dole ne a fara gane ta a matakin karamin vault; babban vault kuwa, ba ya tura asarar zuwa sama har sai lokacin tarawa na gaba ko rahotonsa. Wannan yana nufin dole ne a gane asarar guda daya sau biyu, tare da jinkiri a tsakanin.

A wannan lokacin, farashin hannun jari na babban vault har yanzu ana nuna shi a tsohon farashi. Wadanda za su iya fita a tsohon farashi suna barin asarar ga wadanda suka rage.

Asarar da aka fassara zuwa matakin babban vault ita ce nauyin jarin babban vault a cikin karamin vault wanda aka ninka da asarar karamin vault. Misali, idan babban vault yana da kashi 20% na kadarorinsa da aka zuba a cikin karamin vault kuma karamin vault ya yi asarar kashi 10%, asarar a matakin babban vault ita ce kashi 2%.

Tsarin rukuni

Lokacin da akwai wani Layer na karkashin J, ana raba asara kamar haka:

L_J = min(Loss, J), L_S = max(0, Loss − J)

Tafki na 100, na karkashin 10, asarar 15: an share Layer na karkashin gaba daya, kuma Layer na sama yana daukar sauran 5; babban jarin na sama 90, asarar kusan kashi 5.6%.

Amma ikon jawo yawanci ba ya hannunka. Neutrl ya dakatar da samar da NUSD da fansa a ranar 13 ga Agusta kuma ya sake budewa a ranar 17 ga Satumba a farashin fansa na 0.51. A kan Strata, jrNUSD, wanda ke da kusan kashi daya bisa biyar na tsarin, an rubuta shi zuwa sifili, kuma srNUSD ya dauki sauran. A lokacin dakatarwar, farashin bin NUSD ya kasance kusan 0.998, don haka ragowar rabon asarar ba zai iya ma farawa ba har sai mai bayarwa ya sanya sabon farashi.

Staking na farko-asara

Staking na mai tallafawa Layer ne na karkashin ne kawai lokacin da wani ya kona shi da gaske. In ba haka ba, yana daukar asara daidai gwargwado tare da sauran hannun jari.

Misali: vault na dala miliyan 200, tare da matsayin looping wanda ke da kashi 10% na NAV, leverage 4x, da haircut na 10% a kan jingina:

10% × 4 × 10% × $200 million = asarar dala miliyan 8.Idan an ƙone dala miliyan 3 na staking:

(8 − 3) / 197 ≈ 2.5%, wanda masu ajiya ke ɗauka.

Idan ƙonewar staking ta zo rahoto ɗaya bayan rubutun ƙasa, to waɗanda suka tsaya a tsakiya, waɗanda aka ƙididdige su da tsohon farashi, suna fara shan asarar, kuma ƙonewar staking tana rama wa waɗanda suka rage.

Asarar da wasu ke yankewa

Matsayin looping

Matsayin leveraged suna ƙara asara da farko, sannan suna tura su. Alakar kusan ita ce:

ΔE/E ≈ L·w

Da leverage 4x da haircut na collateral 10%, equity na matsayin yana shan asarar kai tsaye 40%, tare da abubuwan ƙarfafawa na liquidation da zamewar unwind. Vault ɗin ba ya ganin hakan sai a rahoto na gaba.

Masu fitar da collateral

Ga cross-chain LRTs, synthetic dollars, da RWA funds, girman asarar mai fitarwa, manaja, ko ƙuri'a ne ke yanke shi, sau da yawa makonni bayan abin da kansa ya faru.

Lokacin da gada ta cross-chain ta haƙa tokens marasa goyon baya, mai fitarwa ne ke yanke shawara ko duk masu riƙe za su raba gibin ko kuwa wrapped asset a sarkar ɗaya za ta ɗauke shi ita kaɗai. Rahoton abin da ya faru na rsETH na Aave ya ƙididdige yanayin rabon daidaitacce:

112,204 / (629,689 + 112,204) ≈ 15.1%.

Synthetic dollars sun dogara da asusun ajiyar kuɗi don ɗaukar nau'ikan asara biyu: kuɗaɗen kuɗi marasa kyau, da gibin goyon baya lokacin da collateral na asali bai isa ya goyi bayan wajibai ba. Amma asusun ajiyar ba shi da iyaka; takardun yawanci suna faɗin kawai ana amfani da shi don rufe asara, ba abin da ke faruwa bayan ya ƙare ba.

Amsar da Neutrl ya bayar ita ce rage ƙimar fansa. NUSD ya dakatar da haƙawa da fansa a ranar 13 ga Agusta, kuma lokacin da ya sake buɗewa a ranar 17 ga Satumba, an saita ƙimar fansa a 0.51. Wato, 1 NUSD ba ya sake fansa a $1; za ka iya dawo da $0.51 kawai. Rabin da asusun ajiyar ba zai iya rufewa ba ana tura shi ga masu riƙe a bugu ɗaya ta hanyar ƙimar fansa.

Wannan yana nuna cewa "dala 1" na synthetic dollar ba garanti ba ne amma manufa ce. Lokacin da asusun ajiyar ya yi kauri, peg ɗin yana kama da tsayayye; bayan asusun ajiyar ya ƙare, yadda ake raba asara ya dogara da yadda mai fitarwa ya saita ƙimar fansa. Rashin faɗin takardun ba ya nufin haɗarin babu; yana nufin kawai mai fitarwa ne ke yanke ƙa'idojin a lokacin.

Bashi na sirri

Bashi na sirri yana aiki akasin haka. A kan Maple, masu ba da bashi da suka janye a lokacin lalacewa suna mai da ƙimar da ta lalace ta zama asara ta dindindin; duk wani dawo da aka samu bayan haka ana rarraba shi daidai gwargwado ga masu ba da bashi da suka rage.

Dala miliyan 1 da lalacewa 10%: waɗanda suka tafi suna ɗaukar $900,000. Idan mai bashi ya biya daga baya, waɗanda suka rage ana mayar da su zuwa dala miliyan 1, kuma waɗanda suka tafi sun kulle asararsu.

A nan, barin da wuri yana kulle asara, kuma waɗanda suka rage ne kawai za su iya samun dawo da aka samu.

Ga bashi mara kyau ɗaya, wane ma'auni ne zai sauka a kai, nawa ne matakan buffer a tsakiya, ko masu ajiya suna ganin farashin hannun jari ya faɗi ko ƙimar littafin ta tsaya a kwance, da lokacin da aka gane asarar su ne ke ƙayyade wanda a ƙarshe zai biya.Kafin ajiya ta farko, kowane matsayi na dabarun ya kamata ya bayyana tambayoyi biyar a fili: wane lamari ne ke haifar da asara, a ina asarar ta fara bugawa, waɗanne matakan shanyewa ne ke tsakanin, abin da masu ajiya suke gani a zahiri, da kuma lokacin da aka amince da asarar.

Idan ba a cika tambayoyin biyar ɗin a fili ba, abin da kuke tsammanin kuna saya shine riba, amma abin da a zahiri kuke saya shine wuri a layi da aka bari bayan wasu sun gudu a tsohon farashi.

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