Today we have first-eligible-height (nLockTime), and mempool expiration measured from this height would work for the goals being discussed, no fork or protocol rev.
With first-eligible-height and last-eligible-height, creator could choose a lifetime shorter than the max, and in addition, lock the whole thing until some point in the future.
On 8/6/2014 9:15 AM, Jeff Garzik wrote:
A fork is not necessarily required, if you are talking about information that deals primarily with pre-consensus mempool behavior. You can make a "network TX" with some information that is digitally signed, yet discarded before it reaches miners.On Wed, Aug 6, 2014 at 11:42 AM, Peter Todd <p...@petertodd.org <mailto:p...@petertodd.org>> wrote:-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 On 6 August 2014 08:17:02 GMT-07:00, Christian Decker <decker.christ...@gmail.com <mailto:decker.christ...@gmail.com>> wrote: >+1 for the new field, overloading fields with new meaning is definitely >not >a good idea. To add a new field the best way to do it is create a new, parallel, tx format where fields are committed by merkle radix tree in an extensible and provable way. You'd then commit to that tree with a mandatory OP_RETURN output in the last txout, or with a new merkle root. Changing the tx format itself in a hard-fork is needlessly disruptive, and in this case, wastes opportunities for improvement. -----BEGIN PGP SIGNATURE----- Version: APG v1.1.1 iQFQBAEBCAA6BQJT4kzQMxxQZXRlciBUb2RkIChsb3cgc2VjdXJpdHkga2V5KSA8 cGV0ZUBwZXRlcnRvZGQub3JnPgAKCRAZnIM7qOfwhamzCAC+zRaXRodP63+ke3K+ Viapiepvk4uIOlqxqtMB2O0zWcyu2+xCJDiRPykK/6HLDBeFDEC9/dGK8++Lovl6 //qZ340LOPFlgT2kYy9E5h/yX469fhtsWhBCv2K47fWwkMS0S/0r4SQnCkbt2R2c 4dQjkoldhw6rNMBTUmwvhSlL30KsT/msWTZiX7DW/YjfOzezEJzy+mYyKp9Sk7ba 1fOiBXORk7mNOs7sTYTvje3sqEGpGTOLP08cY/RCEvl6bG8mHkPqwiojq+3biHFP RsoBVu1f5cbnU7Wq0gPNdVnQssnEQDadyTX8gT0Wze7PuVyaZT2mXFZBKzSHuLy2 sJKN =oPSo -----END PGP SIGNATURE----- -- Jeff Garzik Bitcoin core developer and open source evangelist BitPay, Inc. https://bitpay.com/ ------------------------------------------------------------------------------ Infragistics Professional Build stunning WinForms apps today! Reboot your WinForms applications with our WinForms controls. Build a bridge from your legacy apps to the future. http://pubads.g.doubleclick.net/gampad/clk?id=153845071&iu=/4140/ostg.clktrk _______________________________________________ Bitcoin-development mailing list Bitcoin-development@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bitcoin-development
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