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Title: How does one send 0.00 BTC ? Post by: bitstarter on July 14, 2012, 07:57:18 PM I was just on the blockchain.info website and noticed this transaction:
or better yet why? http://buybtc.info/blockchain.JPG How does one send 0.00 BTC ? Title: Re: How does one send 0.00 BTC ? Post by: Shirik on July 14, 2012, 08:07:37 PM Link to the transaction? Your ID is cut off.
I suspect it's not 0 BTC, but rather just such a small number that it doesn't show up. Title: Re: How does one send 0.00 BTC ? Post by: notme on July 14, 2012, 08:08:05 PM blockchain.info rounds to two decimal points, bitcoin has eight decimal places.
Title: Re: How does one send 0.00 BTC ? Post by: bitstarter on July 14, 2012, 08:13:20 PM Link to the transaction? Your ID is cut off. I suspect it's not 0 BTC, but rather just such a small number that it doesn't show up. I don't know I caught it on the transaction scroll bar on blockchain captured it :P so ..it wasn't mine.. Title: Re: How does one send 0.00 BTC ? Post by: bitstarter on July 14, 2012, 08:13:43 PM blockchain.info rounds to two decimal points, bitcoin has eight decimal places. ah so it might be cut off ? so might be 0.001 ? Title: Re: How does one send 0.00 BTC ? Post by: notme on July 14, 2012, 08:16:39 PM blockchain.info rounds to two decimal points, bitcoin has eight decimal places. ah so it might be cut off ? so might be 0.001 ? Yep, anything less than 0.005 would show up as 0.00 Title: Re: How does one send 0.00 BTC ? Post by: theymos on July 14, 2012, 08:25:49 PM It is legal to send 0 BTC, but the bitcoin.org client doesn't support sending such transactions. This is useful in some cases.
Title: Re: How does one send 0.00 BTC ? Post by: notme on July 15, 2012, 06:25:18 AM It is legal to send 0 BTC, but the bitcoin.org client doesn't support sending such transactions. This is useful in some cases. Could you provide an example use case? Title: Re: How does one send 0.00 BTC ? Post by: theymos on July 15, 2012, 07:41:58 AM Could you provide an example use case? It's used in hashcoin's payment channels protocol. Miners will need to do it in 100+ years when blocks have no subsidy (if there are no fees). You can use it for tracking an asset without tying up BTC: the asset is represented by the 0-BTC output, and sending this 0-value output to someone (also valid) transfers the asset. You can use it for storing data in the block chain without tying up BTC. Title: Re: How does one send 0.00 BTC ? Post by: notme on July 15, 2012, 04:53:51 PM Could you provide an example use case? It's used in hashcoin's payment channels protocol. Miners will need to do it in 100+ years when blocks have no subsidy (if there are no fees). You can use it for tracking an asset without tying up BTC: the asset is represented by the 0-BTC output, and sending this 0-value output to someone (also valid) transfers the asset. You can use it for storing data in the block chain without tying up BTC. Thanks Title: Re: How does one send 0.00 BTC ? Post by: notme on July 15, 2012, 06:41:42 PM I really expected it to be Disallowed by the blockchain itself simply for "spam protection" But yeah i can see how it could be useful It would likely need a transaction fee attached for it to actually be mined in any reasonable time. Title: Re: How does one send 0.00 BTC ? Post by: nimda on July 15, 2012, 07:07:51 PM Such a transaction, I believe, would have a priority of 0, since priority is the product of age and size. Thus, it would certainly need to carry a fee, unless it was produced by someone who had mined a block.
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