ICS28: Remove CCV channel state #678

mpoke · 2022-03-07T18:01:15Z

Close #668

Remove the ChannelStatus from CCV module, since it's not needed. The consumer side of the CCV channel is established when receiving the first VSC packet.

Also, remove the redundant copies of the two staking hooks, i.e., AfterUnbondingOpInitiated and BeforeUnbondingOpCompleted.

…cepts.md Co-authored-by: Sergio Mena <[email protected]>

…rties.md Co-authored-by: Sergio Mena <[email protected]>

…n.md Co-authored-by: Sergio Mena <[email protected]>

Co-authored-by: Sergio Mena <[email protected]>

… and sys inv

… marius/ccv-staking-hooks

jovankomatovic

This looks good to me. Don't have any comments.

AdityaSripal

Just a couple nits, can be addressed in separate PR

AdityaSripal · 2022-03-11T13:19:36Z

spec/app/ics-028-cross-chain-validation/overview_and_basic_concepts.md

-> **Discussion**: As long as the [assumptions required by CCV](./system_model_and_properties.md#assumptions) hold (e.g., *Correct Relayer*), every governance proposal to spawn a new consumer chain that passes on the provider chain eventually results in a CCV channel being created. Furthermore, the "*FIRST*" keyword in the above description ensures the uniqueness of the CCV channel, i.e., all subsequent attempts to create another CCV channel to the same consumer chain will fail.
+  - *OnChanOpenInit*: On receiving a `ChanOpenInit` message, the consumer CCV module verifies that the underlying client associated with this channel is the expected client of the provider chain (i.e., created during genesis).
+  - *OnChanOpenTry*: On receiving a `ChanOpenTry` message, the provider CCV module verifies that the underlying client associated with this channel is the expected client of the consumer chain (i.e., created when handling the governance proposal).
+  - *OnChanOpenConfirm*: On receiving the *FIRST* `ChanOpenConfirm` message, the provider CCV module considers its side of the CCV channel to be established.


Don't we need OnChanOpenAck

Don't we need OnChanOpenAck

I mention above that we omit the ChanOpenAck message, i.e.,

We omit the ChanOpenAck message since it is not relevant for the overview.

Nothing really happens there :)

AdityaSripal · 2022-03-11T13:25:43Z

spec/app/ics-028-cross-chain-validation/system_model_and_properties.md

@@ -232,8 +232,8 @@ The following properties define the guarantees of CCV on *registering* on the pr
 In this section we argue the correctness of the CCV protocol described in the [Technical Specification](./technical_specification.md), 
 i.e., we informally prove the properties described in the [previous section](#desired-properties).

- ***Channel Uniqueness*:** The provider chain sets the CCV channel when receiving (from the consumer chain) the first `ChanOpenConfirm` message and it marks the channel as `INVALID` when receiving any subsequent `ChanOpenConfirm` messages (cf. *Safe Blockchain*). 
-  Similarly, the consumer chain sets the CCV channel when receiving the first `VSCPacket` and ignores any packets received on different channels (cf. *Safe Blockchain*). 
+- ***Channel Uniqueness*:** The provider chain side of the CCV channel is established when the provider CCV module receives the first `ChanOpenConfirm` message; all subsequent `ChanOpenConfirm` messages result in the underlying channel being closed (cf. *Safe Blockchain*). 


Let's also talk about how we enforce uniqueness for consumer side

Let's also talk about how we enforce uniqueness for consumer side

It's the next sentence, i.e.,

Similarly, the consumer chain side of the CCV channel is established when the consumer CCV module receives the first VSCPacket and ignores any packets received on different channels (cf. Safe Blockchain).

…cepts.md Co-authored-by: Aditya <[email protected]>

…cepts.md Co-authored-by: Josef Widder <[email protected]>

…n.md Co-authored-by: Josef Widder <[email protected]>

…us/ccv-evidence

…rties.md Co-authored-by: Aditya <[email protected]>

* ICS 28 CCV draft w/ init and validator set update (#640) * Create README.md * Add files with CCV spec * fix links to ICS 4 * fix links to ICS 7 * add ICS 28 to main README.md * Update spec/app/ics-028-cross-chain-validation/overview_and_basic_concepts.md Co-authored-by: Sergio Mena <[email protected]> * Update spec/app/ics-028-cross-chain-validation/overview_and_basic_concepts.md Co-authored-by: Sergio Mena <[email protected]> * Update spec/app/ics-028-cross-chain-validation/system_model_and_properties.md Co-authored-by: Sergio Mena <[email protected]> * Update spec/app/ics-028-cross-chain-validation/technical_specification.md Co-authored-by: Sergio Mena <[email protected]> * Update spec/app/ics-028-cross-chain-validation/README.md Co-authored-by: Sergio Mena <[email protected]> * Update spec/app/ics-028-cross-chain-validation/README.md Co-authored-by: Sergio Mena <[email protected]> * minor, remove confusing phrasing * child -> consumer; parent -> provider * clarify which staking module * extend staking assumptions, remove redundant inv, prove staking props and sys inv * break long lines * break long lines * remove dependecies to Cosmos SDK * changes in the security model * specify multiple consumer chains * channel init overview * split Valid Blockchain assumption * minor changes after discussion w/ Josef * make the split of Valid Blockchain consistent * Update spec/app/ics-028-cross-chain-validation/system_model_and_properties.md Co-authored-by: Aditya <[email protected]> * Update spec/app/ics-028-cross-chain-validation/system_model_and_properties.md Co-authored-by: Aditya <[email protected]> * resolve conversations Co-authored-by: Sergio Mena <[email protected]> Co-authored-by: Aditya <[email protected]> * merge CODEOWNERS from master * ICS28: CCV draft w/ complete unbonding (#646) * Create README.md * Add files with CCV spec * fix links to ICS 4 * fix links to ICS 7 * add ICS 28 to main README.md * adding tech spec for unbonding delegations * add context on unbonding operations * add unbonding operation diagram * Update spec/app/ics-028-cross-chain-validation/overview_and_basic_concepts.md Co-authored-by: Sergio Mena <[email protected]> * Update spec/app/ics-028-cross-chain-validation/overview_and_basic_concepts.md Co-authored-by: Sergio Mena <[email protected]> * Update spec/app/ics-028-cross-chain-validation/system_model_and_properties.md Co-authored-by: Sergio Mena <[email protected]> * Update spec/app/ics-028-cross-chain-validation/technical_specification.md Co-authored-by: Sergio Mena <[email protected]> * Update spec/app/ics-028-cross-chain-validation/README.md Co-authored-by: Sergio Mena <[email protected]> * Update spec/app/ics-028-cross-chain-validation/README.md Co-authored-by: Sergio Mena <[email protected]> * minor, remove confusing phrasing * child -> consumer; parent -> provider * clarify which staking module * extend staking assumptions, remove redundant inv, prove staking props and sys inv * modify staking hooks spec to cover other unbonding ops * provider Staking module * break long lines * break long lines * remove dependecies to Cosmos SDK * changes in the security model * specify multiple consumer chains * channel init overview * address issues #27 and #33 from cosmos/interchain-security repo * Update spec/app/ics-028-cross-chain-validation/overview_and_basic_concepts.md Co-authored-by: Josef Widder <[email protected]> Co-authored-by: Sergio Mena <[email protected]> Co-authored-by: Josef Widder <[email protected]> * ICS28: Extend consumer InitGenesis (#659) * Create README.md * Add files with CCV spec * fix links to ICS 4 * fix links to ICS 7 * add ICS 28 to main README.md * adding tech spec for unbonding delegations * add context on unbonding operations * add unbonding operation diagram * Update spec/app/ics-028-cross-chain-validation/overview_and_basic_concepts.md Co-authored-by: Sergio Mena <[email protected]> * Update spec/app/ics-028-cross-chain-validation/overview_and_basic_concepts.md Co-authored-by: Sergio Mena <[email protected]> * Update spec/app/ics-028-cross-chain-validation/system_model_and_properties.md Co-authored-by: Sergio Mena <[email protected]> * Update spec/app/ics-028-cross-chain-validation/technical_specification.md Co-authored-by: Sergio Mena <[email protected]> * Update spec/app/ics-028-cross-chain-validation/README.md Co-authored-by: Sergio Mena <[email protected]> * Update spec/app/ics-028-cross-chain-validation/README.md Co-authored-by: Sergio Mena <[email protected]> * minor, remove confusing phrasing * child -> consumer; parent -> provider * clarify which staking module * extend staking assumptions, remove redundant inv, prove staking props and sys inv * modify staking hooks spec to cover other unbonding ops * provider Staking module * break long lines * break long lines * remove dependecies to Cosmos SDK * changes in the security model * specify multiple consumer chains * channel init overview * address issues #27 and #33 from cosmos/interchain-security repo * extend consumer InitGenesis * describe mechanism to disseminate genesis state * remove ExportGenesis and restarted chains * Update spec/app/ics-028-cross-chain-validation/overview_and_basic_concepts.md Co-authored-by: Josef Widder <[email protected]> * validate channel IDs on provider genesis Co-authored-by: Sergio Mena <[email protected]> Co-authored-by: Josef Widder <[email protected]> * ICS28: Consumer Initiated Slashing (aka Evidence) (#663) * Create README.md * Add files with CCV spec * fix links to ICS 4 * fix links to ICS 7 * add ICS 28 to main README.md * adding tech spec for unbonding delegations * add context on unbonding operations * add unbonding operation diagram * Update spec/app/ics-028-cross-chain-validation/overview_and_basic_concepts.md Co-authored-by: Sergio Mena <[email protected]> * Update spec/app/ics-028-cross-chain-validation/overview_and_basic_concepts.md Co-authored-by: Sergio Mena <[email protected]> * Update spec/app/ics-028-cross-chain-validation/system_model_and_properties.md Co-authored-by: Sergio Mena <[email protected]> * Update spec/app/ics-028-cross-chain-validation/technical_specification.md Co-authored-by: Sergio Mena <[email protected]> * Update spec/app/ics-028-cross-chain-validation/README.md Co-authored-by: Sergio Mena <[email protected]> * Update spec/app/ics-028-cross-chain-validation/README.md Co-authored-by: Sergio Mena <[email protected]> * minor, remove confusing phrasing * child -> consumer; parent -> provider * clarify which staking module * extend staking assumptions, remove redundant inv, prove staking props and sys inv * modify staking hooks spec to cover other unbonding ops * provider Staking module * break long lines * break long lines * remove dependecies to Cosmos SDK * changes in the security model * specify multiple consumer chains * channel init overview * address issues #27 and #33 from cosmos/interchain-security repo * extend consumer InitGenesis * describe mechanism to disseminate genesis state * describe mapping heights provider <> consumer * remove ExportGenesis and restarted chains * add overview of consumer initiated slashing * add slashing invariant * add assumptions needed by evidence * Update spec/app/ics-028-cross-chain-validation/overview_and_basic_concepts.md Co-authored-by: Josef Widder <[email protected]> * draft CCV props for slashing * replace time w/ height; add HtoVSC and VSCtoH * replace time with height in invariants and properties * validate channel IDs on provider genesis * prove Slashing Invariant * enable mapping from consumer to provider heights * technical spec for slashing * minor changes * fix links to tendermint spec * clarify Staking vs Slashing modules * replace VSC acks w/ VSCMaturedPackets * fix some TODOs * fix properties * HtoVSC and VSCtoH from () to [] * fix infraction height and add intuition diagram * keep ValidatorSet in consumer CCV module state * add outstanding downtime flag and decouple from validatorSet * fix issues pointed by Simon * dealing with downtime slashing atomicity * Update spec/app/ics-028-cross-chain-validation/overview_and_basic_concepts.md Co-authored-by: Aditya <[email protected]> * addressing Aditya's comments * Update spec/app/ics-028-cross-chain-validation/overview_and_basic_concepts.md Co-authored-by: Josef Widder <[email protected]> * Update spec/app/ics-028-cross-chain-validation/overview_and_basic_concepts.md Co-authored-by: Josef Widder <[email protected]> * Update spec/app/ics-028-cross-chain-validation/overview_and_basic_concepts.md Co-authored-by: Josef Widder <[email protected]> * Update spec/app/ics-028-cross-chain-validation/technical_specification.md Co-authored-by: Josef Widder <[email protected]> * Update spec/app/ics-028-cross-chain-validation/technical_specification.md Co-authored-by: Josef Widder <[email protected]> * addressing Josef's comments * link TODOs with issues * Update spec/app/ics-028-cross-chain-validation/system_model_and_properties.md Co-authored-by: Aditya <[email protected]> * Update spec/app/ics-028-cross-chain-validation/system_model_and_properties.md Co-authored-by: Aditya <[email protected]> * apply suggestions from code review * cleanup outdated note on restarted consumer chains Co-authored-by: Sergio Mena <[email protected]> Co-authored-by: Josef Widder <[email protected]> Co-authored-by: Aditya <[email protected]> * ICS28: Remove CCV channel state (#678) * Create README.md * Add files with CCV spec * fix links to ICS 4 * fix links to ICS 7 * add ICS 28 to main README.md * adding tech spec for unbonding delegations * add context on unbonding operations * add unbonding operation diagram * Update spec/app/ics-028-cross-chain-validation/overview_and_basic_concepts.md Co-authored-by: Sergio Mena <[email protected]> * Update spec/app/ics-028-cross-chain-validation/overview_and_basic_concepts.md Co-authored-by: Sergio Mena <[email protected]> * Update spec/app/ics-028-cross-chain-validation/system_model_and_properties.md Co-authored-by: Sergio Mena <[email protected]> * Update spec/app/ics-028-cross-chain-validation/technical_specification.md Co-authored-by: Sergio Mena <[email protected]> * Update spec/app/ics-028-cross-chain-validation/README.md Co-authored-by: Sergio Mena <[email protected]> * Update spec/app/ics-028-cross-chain-validation/README.md Co-authored-by: Sergio Mena <[email protected]> * minor, remove confusing phrasing * child -> consumer; parent -> provider * clarify which staking module * extend staking assumptions, remove redundant inv, prove staking props and sys inv * modify staking hooks spec to cover other unbonding ops * provider Staking module * break long lines * break long lines * remove dependecies to Cosmos SDK * changes in the security model * specify multiple consumer chains * channel init overview * address issues #27 and #33 from cosmos/interchain-security repo * extend consumer InitGenesis * describe mechanism to disseminate genesis state * describe mapping heights provider <> consumer * remove ExportGenesis and restarted chains * add overview of consumer initiated slashing * add slashing invariant * add assumptions needed by evidence * Update spec/app/ics-028-cross-chain-validation/overview_and_basic_concepts.md Co-authored-by: Josef Widder <[email protected]> * draft CCV props for slashing * replace time w/ height; add HtoVSC and VSCtoH * replace time with height in invariants and properties * validate channel IDs on provider genesis * prove Slashing Invariant * enable mapping from consumer to provider heights * technical spec for slashing * minor changes * fix links to tendermint spec * clarify Staking vs Slashing modules * replace VSC acks w/ VSCMaturedPackets * fix some TODOs * fix properties * HtoVSC and VSCtoH from () to [] * fix infraction height and add intuition diagram * keep ValidatorSet in consumer CCV module state * remove CCV channel status * add outstanding downtime flag and decouple from validatorSet * adressing Josef's comment * fix issues pointed by Simon * dealing with downtime slashing atomicity * Update spec/app/ics-028-cross-chain-validation/overview_and_basic_concepts.md Co-authored-by: Aditya <[email protected]> * addressing Aditya's comments * Update spec/app/ics-028-cross-chain-validation/overview_and_basic_concepts.md Co-authored-by: Josef Widder <[email protected]> * Update spec/app/ics-028-cross-chain-validation/overview_and_basic_concepts.md Co-authored-by: Josef Widder <[email protected]> * Update spec/app/ics-028-cross-chain-validation/overview_and_basic_concepts.md Co-authored-by: Josef Widder <[email protected]> * Update spec/app/ics-028-cross-chain-validation/technical_specification.md Co-authored-by: Josef Widder <[email protected]> * Update spec/app/ics-028-cross-chain-validation/technical_specification.md Co-authored-by: Josef Widder <[email protected]> * addressing Josef's comments * link TODOs with issues * Update spec/app/ics-028-cross-chain-validation/system_model_and_properties.md Co-authored-by: Aditya <[email protected]> * Update spec/app/ics-028-cross-chain-validation/system_model_and_properties.md Co-authored-by: Aditya <[email protected]> * apply suggestions from code review * cleanup outdated note on restarted consumer chains Co-authored-by: Sergio Mena <[email protected]> Co-authored-by: Josef Widder <[email protected]> Co-authored-by: Aditya <[email protected]> * Update technical_specification.md Fix typo: VSCtoH replaced with HtoVSC in SendSlashRequest * ICS28: Replace "Initiator" w/ "Caller" and “Trigger Event” (#696) * update init methods and ics26 methods * updating ValSet Update methods * updating Consumer Initiated Slashing methods * ICS28: Handle pending proposals to spawn consumer chains (#697) * handle pending proposals * ICS28: Remove genesisHash from specification (#699) * remove genesis hash * remove details of genesis state dissemination * ICS28: CCV Reward Distribution subprotocol (#704) * add overview of reward distribution * add CCVHandshakeMetadata and update channel handshake methods signatures * initiate opening handshake for transfer channel * add DistributeRewards() method * address review comments * add distribution invariant * replace system invariants with system properties Co-authored-by: Josef Widder <[email protected]> * ICS28: Set initH in onChanOpenConfirm (#705) * set initH in onChanOpenConfirm * replace initH with initialHeights * ICS28: Enable the removal of a consumer chain from the provider (#707) * stopping a consumer chain * deal with timeouts on the consumer side * fix typo * add note on how to shut down the consumer * add note on safety implication of lockUnbondingOnTimeout * ICS28: Remove BeforeUnbondingOpCompleted (#711) * remove BeforeUnbondingOpCompleted hook * cleanup method names * ICS28: Update SlashPacketData (#728) * update SlashPacket * ICS28: Remove dependency on Tendermint and ABCI (#730) * remove mention of V2 * remove ABCI dependency from overview; also small fixes * remove dependencies from system model and README * remove dependencies from tech spec * call UnbondMaturePackets() earlier (#747) * fix edge case enabled by aggregation (#746) * Use `h < hp'` instead of `h <= hp'` in Bond-Based Consumer Voting Power (#749) * replace slashRequests w/ downtimeSlashRequests (#745) * ics28 update sendPacket (#756) * ICS28: Restructure technical spec (#760) * split technical spec into two files * restructure methods and subprotocols * add links to readme.md * fix typo - initH replaced w/ initialHeights * ICS28: Unbonding ops are put on hold even w/o consumer chains (#763) * PutUnbondingOnHold only if consumer chains exist * Use currentTimestamp() >= p.stopTime in StopConsumerChainProposalHandler (#769) Tackle #768 * adding consumerUnbondingPeriod (#771) * fix sendFungibleTokens signature * add authors * ICS28: Removing the only consumer chain (#770) * remove unbonding op with no consumer chains * add postcondition * add conditions for CreateConsumerClient and StopConsumerChain (#775) * update created date * ICS28: Account for slashing in Bond-Based Consumer Voting Power property (#793) * extend Bond-Based Consumer Voting Power w/ slashing * fix Bond-Based Consumer Voting Power formula * expand note for clarity * add pUnbonding * Update spec/app/ics-028-cross-chain-validation/system_model_and_properties.md Co-authored-by: Josef Widder <[email protected]> * clarify mathematical writeup of property * Update spec/app/ics-028-cross-chain-validation/system_model_and_properties.md Co-authored-by: Josef Widder <[email protected]> * Update spec/app/ics-028-cross-chain-validation/system_model_and_properties.md Co-authored-by: Josef Widder <[email protected]> * Update spec/app/ics-028-cross-chain-validation/system_model_and_properties.md Co-authored-by: Josef Widder <[email protected]> * make changes to sumUnbonding / sumSlash consistent * add history Co-authored-by: Josef Widder <[email protected]> Co-authored-by: Sergio Mena <[email protected]> Co-authored-by: Aditya <[email protected]> Co-authored-by: Josef Widder <[email protected]> Co-authored-by: Daniel T <[email protected]>

mpoke and others added 30 commits January 17, 2022 22:08

Create README.md

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add ICS 28 to main README.md

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adding tech spec for unbonding delegations

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add context on unbonding operations

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add unbonding operation diagram

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Update spec/app/ics-028-cross-chain-validation/overview_and_basic_con…

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…cepts.md Co-authored-by: Sergio Mena <[email protected]>

Update spec/app/ics-028-cross-chain-validation/overview_and_basic_con…

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…cepts.md Co-authored-by: Sergio Mena <[email protected]>

Update spec/app/ics-028-cross-chain-validation/system_model_and_prope…

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…rties.md Co-authored-by: Sergio Mena <[email protected]>

Update spec/app/ics-028-cross-chain-validation/technical_specificatio…

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…n.md Co-authored-by: Sergio Mena <[email protected]>

Update spec/app/ics-028-cross-chain-validation/README.md

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Update spec/app/ics-028-cross-chain-validation/README.md

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minor, remove confusing phrasing

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child -> consumer; parent -> provider

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clarify which staking module

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extend staking assumptions, remove redundant inv, prove staking props…

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… and sys inv

modify staking hooks spec to cover other unbonding ops

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Merge branch 'marius/ccv-init-and-vsc' into marius/ccv-staking-hooks

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provider Staking module

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Merge branch 'marius/ccv-staking-hooks' of github.com:cosmos/ibc into…

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… marius/ccv-staking-hooks

break long lines

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break long lines

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remove dependecies to Cosmos SDK

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Merge branch 'marius/ccv-init-and-vsc' into marius/ccv-staking-hooks

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changes in the security model

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specify multiple consumer chains

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channel init overview

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Merge branch 'marius/ccv-init-and-vsc' into marius/ccv-staking-hooks

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mpoke added 2 commits March 8, 2022 13:31

add outstanding downtime flag and decouple from validatorSet

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adressing Josef's comment

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jovankomatovic approved these changes Mar 10, 2022

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Merge branch 'marius/ccv-evidence' into marius/668-ccv-channel-state

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mpoke added the ready-for-review Pull requests which are ready for review. label Mar 10, 2022

mpoke added 3 commits March 11, 2022 12:39

fix issues pointed by Simon

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dealing with downtime slashing atomicity

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Merge branch 'marius/ccv-evidence' into marius/668-ccv-channel-state

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AdityaSripal approved these changes Mar 11, 2022

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mpoke and others added 15 commits March 16, 2022 17:38

Update spec/app/ics-028-cross-chain-validation/overview_and_basic_con…

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…cepts.md Co-authored-by: Aditya <[email protected]>

addressing Aditya's comments

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Update spec/app/ics-028-cross-chain-validation/overview_and_basic_con…

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addressing Josef's comments

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Merge branch 'marius/ccv-evidence' of github.com:cosmos/ibc into mari…

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link TODOs with issues

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Update spec/app/ics-028-cross-chain-validation/system_model_and_prope…

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…rties.md Co-authored-by: Aditya <[email protected]>

Update spec/app/ics-028-cross-chain-validation/system_model_and_prope…

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apply suggestions from code review

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cleanup outdated note on restarted consumer chains

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Base automatically changed from marius/ccv-evidence to marius/ccv March 23, 2022 10:48

Merge branch 'marius/ccv' into marius/668-ccv-channel-state

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mpoke merged commit 723af4d into marius/ccv Mar 23, 2022

mpoke deleted the marius/668-ccv-channel-state branch March 23, 2022 11:18

mpoke mentioned this pull request Mar 28, 2022

Remove CCV channel state cosmos/interchain-security#53

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ICS28: Remove CCV channel state #678

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ICS28: Remove CCV channel state #678

ICS28: Remove CCV channel state #678

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