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CLI

A user can query and interact with the transfer module using the CLI. Use the --help flag to discover the available commands:

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Query

The query commands allow users to query transfer state. 
simd query ibc-transfer --help

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total-escrow

The total-escrow command allows users to query the total amount in escrow for a particular coin denomination regardless of the transfer channel from where the coins were sent out. 
simd query ibc-transfer total-escrow [denom] [flags]
Example: 
simd query ibc-transfer total-escrow samoleans
Example Output: 
amount: "100"

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gRPC

A user can query the transfer module using gRPC endpoints.

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TotalEscrowForDenom

The TotalEscrowForDenom endpoint allows users to query the total amount in escrow for a particular coin denomination regardless of the transfer channel from where the coins were sent out. 
ibc.applications.transfer.v1.Query/TotalEscrowForDenom
Example: 
grpcurl -plaintext \
  -d '{"denom":"samoleans"}' \
  localhost:9090 \
  ibc.applications.transfer.v1.Query/TotalEscrowForDenom
Example output: 
{
  "amount": "100"
}