How the priority parameter works

The priority parameter is available for Bitcoin, Ethereum, ERC-20 and Litecoin. It's available both in the create and estimate endpoint.

Like the name hints, it's meant to make make the transactions faster, though the higher the priority, the higher the network fee.

Each cryptocurrency/network have their sets of priorities.

Bitcoin

With Bitcoin this represents confirmation targets, which means it's calculated based on current network fees to be confirmed within X number of blocks, number of blocks for each are:

Enum: Description
fast 10
default 25
economic 75
x-economic 125
xx-economic 200
xxx-economic 300
xxxx-economic 500
xxxxx-economic 1000

Ethereum

With Ethereum, these values are based on gas price estimation:

Enum: Description
fast 100%
default 100%
economic 95%
x-economic 90%
xx-economic 85%
xxx-economic 80%
xxxx-economic 75%

ERC-20 Tokens

Like with Ethereum, with ERC-20 Tokens the values are based on gas price estimation:

Enum: Description
fast 120%
default 100%
economic 95%
x-economic 90%
xx-economic 85%
xxx-economic 80%
xxxx-economic 75%

Litecoin

Like with Bitcoin, these represent confirmation targets, which means it's calculated based on current network fees to be confirmed within X number of blocks, number of blocks for each are:

Enum: Description
fast 10
default 25
economic 50

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