ec8dc3a88a
Return a more informative error message when trying to spend coinbase; select non-coinbase inputs when sending to a transparent output if needed For #1373 and #1519 Code change: - Extra parameter added to AvailableCoins to include or exclude Coinbase coins. Default value of parameter is 'true' as current behaviour is to include Coinbase coins. - SelectCoins, used for sending taddr->taddr, will now exclude Coinbase coins. Unit test: Tried to write a test to focus on the extra parameter added to AvailableCoins but could not. Empirical testing on Testnet: Current behaviour is that upstream RPC commands sendfrom and sendtoaddress try to spend coinbase coins returned by AvailableCoins. So the user will see: ``` ./zcash-cli sendtoaddress mrEGRmGJhmwAa4MQjzGd86ry63vrvovu9b 1000.0 error: {"code":-6,"message":"Insufficient funds"} ./zcash-cli sendtoaddress mrEGRmGJhmwAa4MQjzGd86ry63vrvovu9b 0.00003000 error: {"code":-4,"message":"Error: The transaction was rejected! This might happen if some of the coins in your wallet were already spent, such as if you used a copy of wallet.dat and coins were spent in the copy but not marked as spent here."} ./zcash-cli sendfrom "" mrEGRmGJhmwAa4MQjzGd86ry63vrvovu9b 0.00003000 error: {"code":-4,"message":"Error: The transaction was rejected! This might happen if some of the coins in your wallet were already spent, such as if you used a copy of wallet.dat and coins were spent in the copy but not marked as spent here."} ``` After fix is applied: ``` ./zcash-cli sendtoaddress mrEGRmGJhmwAa4MQjzGd86ry63vrvovu9b 1000.0 error: {"code":-6,"message":"Insufficient funds"} ./zcash-cli sendtoaddress mrEGRmGJhmwAa4MQjzGd86ry63vrvovu9b 0.00003000 error: {"code":-4,"message":"Coinbase funds can only be sent to a zaddr"} ``` When non-coinbase UTXOs exist, they will now be selected and used: ``` ./zcash-cli z_sendmany tnPJZHeVxegCg91utaquBRPEDBGjozfz9iLDHt7zvphFbZdspNgkTVLCGjDcadQBKNyUwKs8pNjDXuEZKrE1aNLpFwHgz4t '[{"address":"mx5fTRhLZwbYE7ZqhAPueZgQGSnwTbdvKU", "amount":0.01}]' ./zcash-cli sendtoaddress mrEGRmGJhmwAa4MQjzGd86ry63vrvovu9b 1000.0 error: {"code":-6,"message":"Insufficient funds"} ./zcash-cli sendtoaddress mrEGRmGJhmwAa4MQjzGd86ry63vrvovu9b 0.00003000 9818e543ac2f689d4ce8b52087607d73fecd771d45d316a1d9db092f0485aff2 ./zcash-cli sendfrom "" mrEGRmGJhmwAa4MQjzGd86ry63vrvovu9b 0.00003000 899f2894823f51f15fc73b5e0871ac943edbe0ff88e1635f86906087b72caf30 ```
Zcash
Where do I begin?
We have a guide for joining the public testnet: https://github.com/zcash/zcash/wiki/Beta-Guide
What is Zcash?
Zcash is an implementation of the "Zerocash" protocol. Based on Bitcoin's code, it intends to offer a far higher standard of privacy and anonymity through a sophisticiated zero-knowledge proving scheme which preserves confidentiality of transaction metadata.
Zcash is unfinished and highly experimental. Use at your own risk.
Participation in the Zcash project is subject to a Code of Conduct.
Security Warnings
See important security warnings in doc/security-warnings.md.
License
Zcash is released under the terms of the MIT license. See COPYING for more information or see http://opensource.org/licenses/MIT.