Golang Cosmos SDK (Stargate) Utilities

A suirte of Golang libraries and tools to decode Cosmos SDK (Stargate) transaction in base64 and hex encoded format to JSON and other conversions.

Pre-requisite

Golang for building the CLI

CLI

The project shipped with a few binaries: workflows

• decode-cosmosbase64tx [base64-encoded-tx]
  • Decode transaction encoded in base64. This is usually find in Cosmos SDK CLI and Tendermint block API endpoint.
• decode-cosmostx [hex-encoded-tx]
  • Decode transaction encoded in hex string
• pubkey-to-consaddress [pubkey] -p [prefix][ -t]
  • Convert bech32 consensus pubkey / Tenedermint pubkey to bech32 consensus address
  • prefix is the bech32 prefix of the resulting consensus address
  • Provide -t flag to specify the pubkey is Tendermint pubkey

Build from source

make all

To re-build binaries with an updated version, run

make clean # this will remove all the built binaries
make all

Decode your transaction

$ ./build/decode-cosmosbase64tx CowGCpkBCjcvY29zbW9zLmRpc3RyaWJ1dGlvbi52MWJldGExLk1zZ1dpdGhkcmF3RGVsZWdhdG9yUmV3YXJkEl4KK3Rjcm8xNG01YTRreHQyZTgydXFxczVndHF6YTI5ZG01d3F6eWEyanc5c2gSL3Rjcm9jbmNsMTkyM3B6MDNtaGphenRnY3YzZ2V5MGhqMGFtd3gwMmR5c2thdTUyCpkBCjcvY29zbW9zLmRpc3RyaWJ1dGlvbi52MWJldGExLk1zZ1dpdGhkcmF3RGVsZWdhdG9yUmV3YXJkEl4KK3Rjcm8xNG01YTRreHQyZTgydXFxczVndHF6YTI5ZG01d3F6eWEyanc5c2gSL3Rjcm9jbmNsMXh3ZDNrOHh0ZXJkZWZ0M254cWc5MnN6aHB6NnZ4NDNxc3BkcHc2CpkBCjcvY29zbW9zLmRpc3RyaWJ1dGlvbi52MWJldGExLk1zZ1dpdGhkcmF3RGVsZWdhdG9yUmV3YXJkEl4KK3Rjcm8xNG01YTRreHQyZTgydXFxczVndHF6YTI5ZG01d3F6eWEyanc5c2gSL3Rjcm9jbmNsMTh5bGNoZ214eXBodzNjdHNsNzVuNTN1amVxdWttbWFnMm42eDNmCpkBCjcvY29zbW9zLmRpc3RyaWJ1dGlvbi52MWJldGExLk1zZ1dpdGhkcmF3RGVsZWdhdG9yUmV3YXJkEl4KK3Rjcm8xNG01YTRreHQyZTgydXFxczVndHF6YTI5ZG01d3F6eWEyanc5c2gSL3Rjcm9jbmNsMWZzOHI2enhtcjVuYzg2ajhjcGNtam1jY2Y4czJjYWZ4enQ1YWxxCpkBCjcvY29zbW9zLmRpc3RyaWJ1dGlvbi52MWJldGExLk1zZ1dpdGhkcmF3RGVsZWdhdG9yUmV3YXJkEl4KK3Rjcm8xNG01YTRreHQyZTgydXFxczVndHF6YTI5ZG01d3F6eWEyanc5c2gSL3Rjcm9jbmNsMWZqYTVuc3h6N2dzcXc0emNjdXV5OHI3cGpuam1jN2RzY2RsMnZ6EmwKUQpGCh8vY29zbW9zLmNyeXB0by5zZWNwMjU2azEuUHViS2V5EiMKIQL6Inwmwwd0nDUwtu9S8U0E+TU86f92eeo/ZUJfq+O1tRIECgIIARieHRIXChEKCGJhc2V0Y3JvEgUxNTAwMBDwkwkaQDfjeHPhtkdkDG3JyqECSN2DTIZeTC3Z2dK82HL1qshIH6dvMvT2JP4NGhmcQW/JK97sZ+FMdxe98GJxQNLfZfk=
{"body":{"messages":[{"@type":"/cosmos.bank.v1beta1.MsgSend","from_address":"tcro1fmprm0sjy6lz9llv7rltn0v2azzwcwzvk2lsyn","to_address":"tcro1782gn9hzqavecukdaqqclvsnpck4mtz3vwzpxl","amount":[{"denom":"basetcro","amount":"100000000"}]}],"memo":"","timeout_height":"0","extension_options":[],"non_critical_extension_options":[]},"auth_info":{"signer_infos":[{"public_key":{"@type":"/cosmos.crypto.secp256k1.PubKey","key":"A1mhVLohDEidpGYmpNYxxvikcaL72jQhZN1fxKFYkB8m"},"mode_info":{"single":{"mode":"SIGN_MODE_LEGACY_AMINO_JSON"}},"sequence":"4"}],"fee":{"amount":[{"denom":"basetcro","amount":"1000"}],"gas_limit":"10000","payer":"","granter":""}},"signatures":["6BL7odUBFc3dU0x2dbg45s5xac3VrTEhgmlsq7dvBbgrlVfuGihCpVebNj8KXy5If3IoqB+/geEl5Y8mSinaBw=="]}

$ ./build/decode-cosmostx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
{"body":{"messages":[{"@type":"/cosmos.bank.v1beta1.MsgSend","from_address":"tcro1fmprm0sjy6lz9llv7rltn0v2azzwcwzvk2lsyn","to_address":"tcro1782gn9hzqavecukdaqqclvsnpck4mtz3vwzpxl","amount":[{"denom":"basetcro","amount":"100000000"}]}],"memo":"","timeout_height":"0","extension_options":[],"non_critical_extension_options":[]},"auth_info":{"signer_infos":[{"public_key":{"@type":"/cosmos.crypto.secp256k1.PubKey","key":"A1mhVLohDEidpGYmpNYxxvikcaL72jQhZN1fxKFYkB8m"},"mode_info":{"single":{"mode":"SIGN_MODE_LEGACY_AMINO_JSON"}},"sequence":"4"}],"fee":{"amount":[{"denom":"basetcro","amount":"1000"}],"gas_limit":"10000","payer":"","granter":""}},"signatures":["6BL7odUBFc3dU0x2dbg45s5xac3VrTEhgmlsq7dvBbgrlVfuGihCpVebNj8KXy5If3IoqB+/geEl5Y8mSinaBw=="]}

Convert tendermint pubkey or bech32 consensus pubkey to bech32 consensus address

$ ./build/decode-cosmospubkey Og8ZfQTHFgTBGD5qoyo5NpyJCJRddC+WuSPtyZtlE7E= -t 
Bech32 Validator Consensus Address: tcrocnclcons1wqajdt4qseasx4e8r8fz7juwdkfu4quvt9e87u
$ ./build/decode-cosmospubkey tcrocnclconspub1zcjduepq8g83jlgycutqfsgc8e42x23ex6wgjzy5t46zl94ey0kunxm9zwcsuzkxpr
Bech32 Validator Consensus Address: tcrocnclcons1wqajdt4qseasx4e8r8fz7juwdkfu4quvt9e87u

Library

You can also use this package as Golang library

DefaultDecoder

The DefaultDecoder is a pre-created decoder and has all the Cosmos built-in modules interfaces registered. You can use it right away:

package yourpackage

import (
    "fmt"

    "github.com/calvinlauyh/cosmosutils"
)

func DecodeTxBytes() {
    decoder := cosmosutils.DefaultDecoder
    anyTxBytes := []byte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
    tx, err := decoder.Decode(anyTxBytes)
    // Handle the error and work with tx
    fmt.Pritnln(string(tx.MarshalToJSON()))
}

func DecodeBase64EncodedTx() {
    decoder := cosmosutils.DefaultDecoder
    anyBase64EncodedTx := "CowGCpkBCjcvY29zbW9zLmRpc3RyaWJ1dGlvbi52MWJldGExLk1zZ1dpdGhkcmF3RGVsZWdhdG9yUmV3YXJkEl4KK3Rjcm8xNG01YTRreHQyZTgydXFxczVndHF6YTI5ZG01d3F6eWEyanc5c2gSL3Rjcm9jbmNsMTkyM3B6MDNtaGphenRnY3YzZ2V5MGhqMGFtd3gwMmR5c2thdTUyCpkBCjcvY29zbW9zLmRpc3RyaWJ1dGlvbi52MWJldGExLk1zZ1dpdGhkcmF3RGVsZWdhdG9yUmV3YXJkEl4KK3Rjcm8xNG01YTRreHQyZTgydXFxczVndHF6YTI5ZG01d3F6eWEyanc5c2gSL3Rjcm9jbmNsMXh3ZDNrOHh0ZXJkZWZ0M254cWc5MnN6aHB6NnZ4NDNxc3BkcHc2CpkBCjcvY29zbW9zLmRpc3RyaWJ1dGlvbi52MWJldGExLk1zZ1dpdGhkcmF3RGVsZWdhdG9yUmV3YXJkEl4KK3Rjcm8xNG01YTRreHQyZTgydXFxczVndHF6YTI5ZG01d3F6eWEyanc5c2gSL3Rjcm9jbmNsMTh5bGNoZ214eXBodzNjdHNsNzVuNTN1amVxdWttbWFnMm42eDNmCpkBCjcvY29zbW9zLmRpc3RyaWJ1dGlvbi52MWJldGExLk1zZ1dpdGhkcmF3RGVsZWdhdG9yUmV3YXJkEl4KK3Rjcm8xNG01YTRreHQyZTgydXFxczVndHF6YTI5ZG01d3F6eWEyanc5c2gSL3Rjcm9jbmNsMWZzOHI2enhtcjVuYzg2ajhjcGNtam1jY2Y4czJjYWZ4enQ1YWxxCpkBCjcvY29zbW9zLmRpc3RyaWJ1dGlvbi52MWJldGExLk1zZ1dpdGhkcmF3RGVsZWdhdG9yUmV3YXJkEl4KK3Rjcm8xNG01YTRreHQyZTgydXFxczVndHF6YTI5ZG01d3F6eWEyanc5c2gSL3Rjcm9jbmNsMWZqYTVuc3h6N2dzcXc0emNjdXV5OHI3cGpuam1jN2RzY2RsMnZ6EmwKUQpGCh8vY29zbW9zLmNyeXB0by5zZWNwMjU2azEuUHViS2V5EiMKIQL6Inwmwwd0nDUwtu9S8U0E+TU86f92eeo/ZUJfq+O1tRIECgIIARieHRIXChEKCGJhc2V0Y3JvEgUxNTAwMBDwkwkaQDfjeHPhtkdkDG3JyqECSN2DTIZeTC3Z2dK82HL1qshIH6dvMvT2JP4NGhmcQW/JK97sZ+FMdxe98GJxQNLfZfk="
    tx, err := decoder.DecodeBase64(anyBase64EncodedTx)
    // Handle the error and work with tx
    fmt.Pritnln(string(tx.MarshalToJSON()))
}

NewDecoder

You can also create your own Decoder and register modules interfaces of your choices to reduce the compiled size:

package yourpackage

import (
    "fmt"

    "github.com/cosmos/cosmos-sdk/codec/types"
    "github.com/cosmos/cosmos-sdk/std"
    banktypes "github.com/cosmos/cosmos-sdk/x/bank/types"

    "github.com/calvinlauyh/cosmosutils"
)

func DecodeTxBytes() {
    decoder := cosmosutils.NewDecoder()
    // Register only the interfaces of your interest.
    decoder.RegisterInterfaces(RegisterInterfaces)

    anyBase64EncodedTx := "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"
    tx, err := decoder.DecodeBase64(anyBase64EncodedTx)
    // Handle the error and work with tx
    fmt.Pritnln(string(tx.MarshalToJSON()))
}

func RegisterInterfaces(interfaceRegistry types.InterfaceRegistry) {
	std.RegisterInterfaces(interfaceRegistry)
	banktypes.RegisterInterfaces(interfaceRegistry)
}

Work with decoded transaction

To facilitate transaction parsing, there is a transaction struct CosmosTx.

package yourpackage

import (
    "fmt"
    "encoding/json"

    "github.com/cosmos/cosmos-sdk/codec/types"
    "github.com/cosmos/cosmos-sdk/std"
    banktypes "github.com/cosmos/cosmos-sdk/x/bank/types"

    "github.com/calvinlauyh/cosmosutils"
)

func DecodeTxBytes() {
    decoder := cosmosutils.NewDecoder()
    // Register only the interfaces of your interest.
    decoder.RegisterInterfaces(RegisterInterfaces)

    anyBase64EncodedTx := "CowGCpkBCjcvY29zbW9zLmRpc3RyaWJ1dGlvbi52MWJldGExLk1zZ1dpdGhkcmF3RGVsZWdhdG9yUmV3YXJkEl4KK3Rjcm8xNG01YTRreHQyZTgydXFxczVndHF6YTI5ZG01d3F6eWEyanc5c2gSL3Rjcm9jbmNsMTkyM3B6MDNtaGphenRnY3YzZ2V5MGhqMGFtd3gwMmR5c2thdTUyCpkBCjcvY29zbW9zLmRpc3RyaWJ1dGlvbi52MWJldGExLk1zZ1dpdGhkcmF3RGVsZWdhdG9yUmV3YXJkEl4KK3Rjcm8xNG01YTRreHQyZTgydXFxczVndHF6YTI5ZG01d3F6eWEyanc5c2gSL3Rjcm9jbmNsMXh3ZDNrOHh0ZXJkZWZ0M254cWc5MnN6aHB6NnZ4NDNxc3BkcHc2CpkBCjcvY29zbW9zLmRpc3RyaWJ1dGlvbi52MWJldGExLk1zZ1dpdGhkcmF3RGVsZWdhdG9yUmV3YXJkEl4KK3Rjcm8xNG01YTRreHQyZTgydXFxczVndHF6YTI5ZG01d3F6eWEyanc5c2gSL3Rjcm9jbmNsMTh5bGNoZ214eXBodzNjdHNsNzVuNTN1amVxdWttbWFnMm42eDNmCpkBCjcvY29zbW9zLmRpc3RyaWJ1dGlvbi52MWJldGExLk1zZ1dpdGhkcmF3RGVsZWdhdG9yUmV3YXJkEl4KK3Rjcm8xNG01YTRreHQyZTgydXFxczVndHF6YTI5ZG01d3F6eWEyanc5c2gSL3Rjcm9jbmNsMWZzOHI2enhtcjVuYzg2ajhjcGNtam1jY2Y4czJjYWZ4enQ1YWxxCpkBCjcvY29zbW9zLmRpc3RyaWJ1dGlvbi52MWJldGExLk1zZ1dpdGhkcmF3RGVsZWdhdG9yUmV3YXJkEl4KK3Rjcm8xNG01YTRreHQyZTgydXFxczVndHF6YTI5ZG01d3F6eWEyanc5c2gSL3Rjcm9jbmNsMWZqYTVuc3h6N2dzcXc0emNjdXV5OHI3cGpuam1jN2RzY2RsMnZ6EmwKUQpGCh8vY29zbW9zLmNyeXB0by5zZWNwMjU2azEuUHViS2V5EiMKIQL6Inwmwwd0nDUwtu9S8U0E+TU86f92eeo/ZUJfq+O1tRIECgIIARieHRIXChEKCGJhc2V0Y3JvEgUxNTAwMBDwkwkaQDfjeHPhtkdkDG3JyqECSN2DTIZeTC3Z2dK82HL1qshIH6dvMvT2JP4NGhmcQW/JK97sZ+FMdxe98GJxQNLfZfk="
    tx, err := decoder.DecodeBase64(anyBase64EncodedTx)

    jsonBytes, err := tx.MarshalToJSON()
    var cosmosTx *cosmosutils.CosmosTx
    err := json.Unmarshal(jsonBytes, &cosmosTx)
    // Handle the error and work with CosmosTx struct
   fmt.Pritnln(cosmosTx) 
}

func RegisterInterfaces(interfaceRegistry types.InterfaceRegistry) {
	std.RegisterInterfaces(interfaceRegistry)
	banktypes.RegisterInterfaces(interfaceRegistry)

Cosmos Stargate Compatibility

The latest version of this package is based on Cosmos SDK v0.41.0. For backward compatibility, release versions for v0.40.0 are suffixed with their Cosmos SDK rc version.

Cosmos SDK Version	Library Version (Git Branch)
v0.43.0	>= release/v0.0.8
v0.41.0	>= release/v0.0.4
v0.40.0-rc{n}	release/v0.0.1-rc{n} to release/v0.0.3-rc{n}

For example, if the transaction comes from a chain using Cosmos SDK v0.40.0-rc1:

go checkout release/v0.0.1-rc1

# go.mod

...
require (
    github.com/calvinlauyh/cosmostxdecode v0.0.1-rc3
    ...
)

replace github.com/gogo/protobuf => github.com/regen-network/protobuf v1.3.2-alpha.regen.4

# Replace `rc1` of the following two lines with your desired Cosmos SDK rc version

replace github.com/cosmos/cosmos-sdk => github.com/cosmos/cosmos-sdk v0.40.0-rc1

replace github.com/calvinlauyh/cosmosutils => github.com/calvinlauyh/cosmosutils v0.0.1-rc1

License

This library is published under MIT license.