github algorand/go-algorand v2.7.0-beta
Algorand BetaNet 2.7.0

2 years ago

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Protocol Upgrade

This release will require a protocol upgrade.
This release contains a consensus protocol upgrade, which implements the following spec:

Spec PR: #2286


This release represents a major milestone in smart contract functionality, as well as serves as a vote for the future of governance on chain.

In this release:

  • Governance vote - see
  • Algorand Virtual Machine (AVM) v0.9
    • Control Flow
      • New OpCodes: callsub, retsub
      • Allow backward jumps or indirect jumps
      • Dynamic cost accounting
    • Opcodes: Math related
      • New OpCodes: shl, shr, divmodw, exp, expw, sqrt, log2
      • Byteslice arithmetic
    • Contract-to-contract composability - allow contracts to share scratch space in a transaction group
    • Createable IDs in gtxns (they are not really deterministic, but rather new app/asset idx are available for subsequent apps within a transaction group)
    • Increased Program Limits
      • Ability to pay for extra pages
      • Pool fees - as long as fees in a covered in a gtxn, allow 0 fee txns
      • Increase ASA URL size from 32 bytes to 96 bytes (better IPFS support for NFTs)
      • Combine clear and approval limits
      • Combine schema key/value sizes
    • Optimize int/byte constant in assembly
  • Participation key registration improvements (e.g. check valid ranges)
  • Miscellaneous optimizations and test improvements


  1. AVM
    • New Features
      • Control flow (callsub, retsub; backward/indirect jumps; dynamic cost accounting)
      • New math opcodes (shl, shr, divmodw, exp, expw, sqrt, log2) and byteslice-oriented math
      • Add ability to pay for more program space
      • Allow future app call transactions to read the scratch space of previous transactions in the same transaction group for contract to contract composability
      • Combine Clear and Approval Program size limits
      • Combine app state key/value size limits
      • Expose creatable IDs to AVM code within the same group
      • Pool fees in a transaction group and allow one user to pay all fees
    • Enhancements
      • Allow AVM code to access a max number of foreign refs
      • Increase ASA URL size from 32 bytes to 96 bytes to support NFTs with longer IPFS URLs
      • Optimize constant assembly
      • Regularize access to "foreign" references
    • Bug Fix - check setbyte length properly
    • New Feature - add the AppsTotalExtraPages account field to the response returned by the /v2/accounts/{addr} endpoint
    • Enhancement - make account endpoint produce deterministic JSON
  3. Agreement
    • Bug Fix - bug fix for proposal for a future round failing to be relayed
  4. Catchup
    • Enhancement - catchup: speedup initial node DNS bootstrap time
  5. Goal
    • Bug Fix - clean up goal wallet new output
  6. Network
    • Enhancement - start network only after handlers registration is complete
    • Bug Fix - fix go vet error for string(int) conversion in TestWebsocketNetworkCancel
  7. Node
    • Enhancement - improve fresh node startup time
    • Bug Fix - ensure stopping a node always stops KMD
  8. Tools
    • Enhancements - deprecate auction code
    • Improve carpenter by adding timestamp
  9. Tests
    • New Feature - integrate with to attach coverage reports to PRs
    • Enhancements
      • Add PeerSelector and Catchup service tests
      • Add missing test for universalFetcher.go
      • Bandwidth stats for cluster tests
      • Disable compact certs and auction tests
      • Disable goal expect tests
      • Improve AVM tests
      • Improve TestRewardUnitThreshold predicate
      • Increase catchupaccessor code coverage
      • Temporarily disable TestBasicCatchpointCatchup test and reset timeouts
      • Temporarily disable TestPeriodicSync test
      • Use gotestsum instead of logfilter for test formatting
      • e2e sub assets-app speedup
      • sectok e2e faster
    • Bug Fixes
      • Fix asynchronous startup case for rekey upgrade test
      • Fix bug in TestApplicationsUpgradeOverREST
      • Fix data race accessing messagesOfInterest during network shutdown
      • Fix random TestAccountInformationV2 test failures by refreshing wallet handle
      • Fix random failure in TestConsensusVersion
      • Fixing a bug in eval and TestOnSwitchToUnSupportedProtocol
      • Protocol upgrade tests - AgreementFilterTimeout was not set correctly
      • Fix TestRekeyUpgrade when round=0
  10. Other
    • New Feature - initial support for building CentOS Stream 8 RPM (still need publishing work)
    • Enhancements
      • Add mention of to README
      • Fix docker builds after refactor: skip make deps
      • Modify build_release to match build_pr and remove ARM Deploy
      • Re-enable gofmt check during travis build
      • Refactor code generation verification
      • Remove ci-deps and update GOPROXY in Dockerfiles
      • Use minimal travis container since we install go ourselves
    • Bug Fixes
      • Fix incorrect gaid and gaids docs
      • Fix nightly test genesis file issue
      • If the branch is rel/nightly set channel to nightly
      • Fix crash that should be a clean error report for using substring wrong

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