Contracts

Contents

• Contracts Cnt with Bal > 0

• Contracts Cnt

• ERC-20 Contracts Cnt

• ERC-721 Contracts Cnt

• ERC-1155 Contracts Cnt

Contracts Cnt with Bal > 0

Definition

The sum count of unique contracts that exist in the ledger and that hold a balance (i.e., own a non-zero amount) of native units at the end of the interval. A contract is a special address that contains and can execute code.

Name	MetricID	Unit	Interval
Contracts Cnt with Bal >0	ContBalCnt	Contracts	1 day

Details

• Contracts with no balance in native units are not counted.

Asset-Specific Details

• This metric is only available for ETH and ETC.

Release History

• Version 4.2 of CM Network Data Pro Daily Macro (End of Day)

Availability for Assets

Coin Metrics CoverageCoin Metrics Coverage

Contracts Cnt

Definition

The sum count of unique contracts that exist in the ledger at the end of the interval. A contract is a special address that contains and can execute code.

Name	MetricID	Unit	Interval
Contracts Cnt	ContCnt	Contracts	1 day

Details

• Contracts with no balance in native units are counted.

Asset-Specific Details

• This metric is only available for ETH and ETC.

Release History

• Version 4.2 of CM Network Data Pro Daily Macro (End of Day)

Availability for Assets

Coin Metrics CoverageCoin Metrics Coverage

ERC-20 Contracts Cnt

Definition

The sum count of unique ERC-20 contracts that exist on the ledger at the end of the interval. A contract is a special address that contains and can execute code. Contracts that contain all of the following are considered to be ERC-20 contracts: the balanceOf function, the transfer function, and the Transfer event hash.

Name	MetricID	Unit	Interval
ERC-20 Contracts Cnt	ContERC20Cnt	Contracts	1 day

Details

• Contracts with no balance in native units are counted.

• Full compliance with the ERC-20 standard is not required as only few ERC-20 tokens attain it. We therefore look for the bare minimum methods and events necessary for wallet integration of the token: balanceOf and transfer functions as well as the Transfer event. If a contract’s code has all of the following markers, it is considered to be ERC-20:

• • Signature of the balanceOf function: 6370a082311461

  • Signature of the transfer function: 63a9059cbb1461

  • Hash of the transfer event ddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef

Asset-Specific Details

• This metric is only available for ETH and ETC.

Release History

• Version 4.3 of CM Network Data Pro Daily Macro (End of Day)

Availability for Assets

Coin Metrics CoverageCoin Metrics Coverage

Definition

The sum count of unique contracts that exist in the ledger at the end of the interval. A contract is a special address that contains and can execute code.

Name	MetricID	Unit	Interval
Contracts Cnt	ContCnt	Contracts	1 day

Details

• Contracts with no balance in native units are counted.

Asset-Specific Details

• This metric is only available for ETH and ETC.

Release History

• Version 4.2 of CM Network Data Pro Daily Macro (End of Day)

Availability for Assets

Coin Metrics CoverageCoin Metrics Coverage

ERC-721 Contracts Cnt

Definition

The sum count of unique contracts implementing the ERC-721 standard that exist in the ledger at the end of the interval. A contract is a special address that contains and can execute code. ERC-165 is used to determine a contract’s compliance with ERC-721.

Name	MetricID	Unit	Interval
ERC-721 Contracts Cnt	ContERC721Cnt	Contracts	1 day

Details

• Contracts with no balance in native units are counted.

• ERC-721 contracts are detected if they implement the ERC-165-compatible interface defined in the ERC-721 specification using the procedure specified in the ERC-165 specification.

Asset-Specific Details

• This metric is only available for ETH and ETC.

Release History

• Version 4.3 of CM Network Data Pro Daily Macro (End of Day)

Availability for Assets

Coin Metrics CoverageCoin Metrics Coverage

ERC-1155 Contracts Cnt

Definition

The sum count of unique smart contracts implementing the ERC-1155 standard present in the blockchain at the end of the interval. A smart contract exists in a blockchain network as a special address that contains and can execute code. The ERC-1155 standard is an emerging standard for the issuance of both fungible and non-fungible tokens on Ethereum. As of this metric's release date, the standard has attained considerable traction in the ecosystem of Non-Fungible Tokens.

Name	MetricID	Unit	Interval
ERC-1155 Contracts Cnt	ContERC1155Cnt	Contracts	1 day

Details

• This metric is calculated by monitoring the blockchain for contracts that comply with the ERC-1155 standard_,_ as defined by the EIP-1155 Standard Specification.

• Like ERC-721 contracts, the activity of ERC-1155s is detected with the help of a secondary standard, ERC-165, which provides an interface for both 751 as well as 1155-compliant events.

Asset-Specific Details

• As this metric is tailored to the Ethereum ecosystem, it is only available for ETH .

Release History

• Released in Network Data Pro (NDP) version 5.1

Availability for Assets

Coin Metrics CoverageCoin Metrics Coverage

API Endpoints

Contracts metrics can be accessed using these endpoints:

• timeseries/asset-metrics

and by passing in the metric ID's Cont* 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.

Response

200400401403

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

Shell

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

Python

import requests
response = requests.get('https://api.coinmetrics.io/v4/timeseries/asset-metrics?metrics=ContBalCnt&assets=eth&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="ContBalCnt", 
        assets="eth",
    ).to_dataframe()
)