$50 of EOS link: https://coinbase.com/earn/eos/invite/tj3f4gh7

Answers to quiz:
1. Blockchain protocol for fast scalable transactions
2. Delegated proof of stake
3. Fast free transfers
4. Stake EOS tokens
5. Upgradable smart contracts

$50 of XLM link: https://coinbase.com/earn/xlm/invite/mphj68g5

Answers to quiz:
1. Stellar is a decentralized coin that unites currencies
2. Facilitating low cost universal payments
3. Fast, secure, and global
4. To issue and exchange tokens quickly
5. It relies on the cooperation of trusted nodes