Feerates

Contents

• Mean Feerate Mempool

• Median Feerate Mempool

• Next Block Average Feerate

• Next Block Maximum Feerate

• Next Block Median Feerate

• Next Block Minimum Feerate

• Next Block Minimum Recommended Fee

Mean Feerate Mempool

Definition

The mean feerate (fee/vsize) of all mempool transactions, in native units per byte. Virtual Size (vsize) is a unit used to measure the size of a bitcoin transaction after the activation of SegWit.

Dictionary

Name	MetricID	Unit	Interval
Mean Feerate Mempool	mempool_feerate_mean	fee/vsize	1m

Methodology

The mempool is evaluated and the feerate (fee/vsize) attached to all transactions is aggregated. The mean feerate of all transactions is then calculated.

Available Assets

Bitcoin (BTC)

Sample Query

https://api.coinmetrics.io/v4/timeseries/asset-metrics?api_key=%3Cyour_key%3E&assets=btc&frequency=1m&limit_per_asset=1&metrics=mempool_feerate_mean&pretty=trueapi.coinmetrics.io

Median Feerate Mempool

Definition

The median feerate (fee/vsize) of all mempool transactions in native units per byte. Virtual Size (vsize) is a unit used to measure the size of a bitcoin transaction after the activation of SegWit.

Dictionary

Name	MetricID	Unit	Interval
Median Feerate Mempool	mempool_feerate_median	fee/vsize	1m

Methodology

The mempool is evaluated and the feerate (fee/vsize) attached to all transactions is calculated. The median feerate of all transactions is then assessed.

Available Assets

Bitcoin (BTC)

Sample Query

https://api.coinmetrics.io/v4/timeseries/asset-metrics?api_key=%3Cyour_key%3E&assets=btc&frequency=1m&limit_per_asset=1&metrics=mempool_feerate_median&pretty=trueapi.coinmetrics.io

Next Block Average Feerate

Definition

The approximate value of the mean feerate for the upcoming blockchain block.

Dictionary

Name	MetricID	Unit	Interval
Next Block Average feerate	mempool_next_block_approx_feerate_mean	sats/vbyte	1m

Methodology

The calculation begins by ranking mempool transactions based on how much fees they are paying. A block template is then applied to these transactions with the goal of identifying which transactions rational miners would pick if they were to build a block at that minute The average (mean) feerate of the transactions in that block template is then showcased.

Available Assets

Bitcoin (BTC)

Sample Assets

https://api.coinmetrics.io/v4/timeseries/asset-metrics?api_key=%3Cyour_key%3E&assets=btc&frequency=1m&limit_per_asset=1&metrics=mempool_next_block_approx_feerate_men&pretty=trueapi.coinmetrics.io

Next Block Maximum Feerate

Definition

The approximate value of the maximum feerate for the upcoming blockchain block.

Dictionary

Name	MetricID	Unit	Interval
Next Block Maximum feerate	mempool_next_block_approx_feerate_max	sats/vbyte	1m

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Methodology

The calculation begins by ranking mempool transactions based on how much fees they are paying. A block template is then applied to these transactions with the goal of identifying which transactions rational miners would pick if they were to build a block at that minute The feerate of the highest transaction that would still be included in that block template is then showcased.

Available Assets

Bitcoin (BTC)

Sample Query

https://api.coinmetrics.io/v4/timeseries/asset-metrics?api_key=%3Cyour_key%3E&assets=btc&frequency=1m&limit_per_asset=1&metrics=mempool_next_block_approx_feerate_max&pretty=trueapi.coinmetrics.io

Next Block Median Feerate

Definition

The approximate value of the median feerate for the upcoming blockchain block.

Dictionary

Name	MetricID	Unit	Interval
Next Block Median feerate	mempool_next_block_approx_feerate_median	sats/vbyte	1m

Methodology

The calculation begins by ranking mempool transactions based on how much fees they are paying. A block template is then applied to these transactions with the goal of identifying which transactions rational miners would pick if they were to build a block at that minute The median feerate of the transactions in that block template is then showcased.

Available Assets

Bitcoin (BTC)

Sample Query

https://api.coinmetrics.io/v4/timeseries/asset-metrics?api_key=%3Cyour_key%3E&assets=btc&frequency=1m&limit_per_asset=1&metrics=mempool_next_block_approx_feerate_median&pretty=trueapi.coinmetrics.io

Next Block Minimum Feerate

Definition

The approximate value of the minimum feerate for the upcoming blockchain block.

Dictionary

Name	MetricID	Unit	Interval
Next Block Minimum feerate	mempool_next_block_approx_feerate_min	sats/vbyte	1m

Methodology

The calculation begins by ranking mempool transactions based on how much fees they are paying. A block template is then applied to these transactions with the goal of identifying which transactions rational miners would pick if they were to build a block at that minute. The feerate of the lowest transaction that would still be included in that block template is then showcased.

Available Assets

Bitcoin (BTC)

Sample Query

https://api.coinmetrics.io/v4/timeseries/asset-metrics?api_key=%3Cyour_key%3E&assets=btc&frequency=1m&limit_per_asset=1&metrics=mempool_next_block_approx_feerate_min&pretty=trueapi.coinmetrics.io

Next Block Minimum Recommended Fee

Definition

The recommended minimum feerate required for a transaction to be included in the upcoming blockchain block. This metric differs from mempool_next_block_approx_feerate_min in that it accounts for situations where there are many transactions paying the minimum feerate. By adding an additional cushion to the minimum estimate, this metric provides better settlement guarantees.

Dictionary

Name	MetricID	Unit	Interval
Next Block minimum recommended fee	mempool_next_block_inclusion_approx_feerate_min	sats/vbyte	1m

Methodology

The calculation begins by ranking mempool transactions based on how much fees they are paying. A block template is then applied to these transactions with the goal of identifying which transactions rational miners would pick if they were to build a block at that minute The feerate of the lowest transaction that would still be included in that block template is then showcased. Depending on the aggregate size of transactions paying the minimum feerate, additional satoshi units are added in order to increase the likelihood that a transaction paying this feerate will be included in the next block.

Available Assets

Bitcoin (BTC)

Sample Query

https://api.coinmetrics.io/v4/timeseries/asset-metrics?api_key=%3Cyour_key%3E&assets=btc&frequency=1m&limit_per_asset=1&metrics=mempool_next_block_approx_feerate_min&pretty=trueapi.coinmetrics.io

Definition

The approximate value of the minimum feerate for the upcoming blockchain block.

Dictionary

Name	MetricID	Unit	Interval
Next Block Minimum feerate	mempool_next_block_approx_feerate_min	sats/vbyte	1m

Methodology

The calculation begins by ranking mempool transactions based on how much fees they are paying. A block template is then applied to these transactions with the goal of identifying which transactions rational miners would pick if they were to build a block at that minute. The feerate of the lowest transaction that would still be included in that block template is then showcased.

Available Assets

Bitcoin (BTC)

Sample Query

https://api.coinmetrics.io/v4/timeseries/asset-metrics?api_key=%3Cyour_key%3E&assets=btc&frequency=1m&limit_per_asset=1&metrics=mempool_next_block_approx_feerate_min&pretty=trueapi.coinmetrics.io

API Endpoints

Fee Rate metrics can be accessed using these endpoints:

• timeseries/asset-metrics

and by passing in the metric ID's mempool_feerate* and mempool_next_block_approx_feerate_* in the metrics parameter.

Asset metrics

Returns requested metrics for specified assets. Results for block by block metrics (1b frequency) are ordered by tuple (asset, height, block_hash), all other metrics are ordered by tuple (asset, time). You can change the sorting using sort query parameter. Supported output formats are json (default) and csv, use format query parameter to override it. To fetch the next page of results use next_page_url JSON response field or x-next-page-url CSV HTTP header if present. If multiple metrics are requested in the same time the strict policy for partially available metrics among requested ones is applied:

GEThttps://api.coinmetrics.io/v4/timeseries/asset-metrics

Authorization

api_key

Query parameters

Response

200400401403414

Time series of metrics for an asset.

Body

application/jsontext/csv

data*any

next_page_tokenNextPageToken (string)

Token of the next page results for a given request.

next_page_urlNextPageUrl (string)

URL of the next page results for a given request.

Request

ShellPython

curl --compressed "https://api.coinmetrics.io/v4/timeseries/asset-metrics?assets=btc&metrics=PriceUSD,FlowInGEMUSD&frequency=1d&pretty=true&api_key=<your_key>"

Response

{
  "next_page_token": "text",
  "next_page_url": "text"
}

Shell

curl --compressed "https://api.coinmetrics.io/v4/timeseries/asset-metrics?metrics=mempool_feerate_median&assets=btc&pretty=true&api_key=<your_key>"

Python

import requests
response = requests.get('https://api.coinmetrics.io/v4/timeseries/asset-metrics?metrics=mempool_feerate_median&assets=btc&pretty=true&api_key=<your_key>').json()
print(response)

Python Client

from coinmetrics.api_client import CoinMetricsClient

api_key = "<API_KEY>"
client = CoinMetricsClient(api_key)

print(
    client.get_asset_metrics(
        metrics="mempool_feerate_median", 
        assets="btc",
    ).to_dataframe()
)