TLDR: - Create two keypairs. - Use ECDH to derive a shared secret. - Use secret to tweak pubkey of the recipient. - Send money to the tweaked (and hashed) p

TLDR: - Create two keypairs. - Use ECDH to derive a shared secret. - Use secret to tweak pubkey of the recipient. - Send money to the tweaked (and hashed) pubkey. - Recipient has to keep an eye out for this tweaked key on the blockchain.