Support the project

The C100 is free to use: live index values, the full history, monthly reports, a public API and widgets, with no ads and no paywall. Data, hosting and the time to run it cost money. If the index is useful to you, a donation in crypto helps keep it running and independent.

• Bitcoin (BTC)

  Send BTC on the Bitcoin network only.

  3PJSFWJWa1hX8DQCUtYvCBkbcvpCSK7NL7
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• Ethereum (ETH)

  Send ETH or USDC (ERC-20) on the Ethereum mainnet only.

  0x4b8f24B5541CdC14D4DE5036AF0Bec1cdf5C4FcC
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• Solana (SOL)

  Send SOL or USDC (SPL) on the Solana network only.

  9k38qYFZ6PPxBAJXa8NQNED9ieYGZJcBiYgHfNGkbBA7
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Before you send

• Use the network shown for each address. Crypto sent on another network or to the wrong address cannot be recovered.
• Check the first and last characters of the address after pasting it.
• Transactions are public on the blockchain. There is no account or sign-up, and we don't collect any data about donors.

Donations never affect the index

A donation buys nothing. It has no effect on which assets are in the index, their weights, the methodology or any decision, and the C100 accepts no payment from any project for inclusion, coverage or promotion. Selection and weighting are mechanical and every decision is published. See conflicts of interest in the governance policy.

Other ways to help: share the index, embed a widget on your site, or send feedback to c100index@protonmail.com.