A uniform resource locator (URL) stored or presented on a tangible, non-transitory medium includes key parameters of an address on a blockchain network from which a token or value is to be transferred. The URL points to computer program code on the blockchain network such that execution of the URL causes the computer program code to produce a cryptographically signed transaction having the key parameters of the address and key parameters of a recipient address on the blockchain network to which the token or value is to be sent, and further causes the computer program code to transfer the token or value from the address to the recipient address. A method generates a URL containing key parameters of an address on the blockchain network that upon execution automatically results in a recipient device that executed the URL receiving control over a token or value stored at the address.