asciilifeform: mircea_popescu: under the don't-need-antecedent-hash -- yes, you could

asciilifeform: trinque: though in classical bitcoin you don't usually need to regrind

asciilifeform: (seems to me that the old dictum 'wait 6 blox' would still apply just the same.)

asciilifeform: the one tricky question i can think of is, how does it behave under reorg.

asciilifeform: scheme is a quite obvious one. but i bet if there is anyone whom this shoe pinches, it'll be mircea_popescu , he will tell us where.

asciilifeform: in given trb-i scheme, a block either exists on disk -- or does not

asciilifeform: locking problems (gotta add tx to index, in current trb, as aggregate -- but the only way to do that is to stop the world! like complete idiot -- every time there is a new block, to prevent situation where there is a partially indexed block available to incoming mempool tx verifier) disappear.

asciilifeform: in either hypothetical trb-i -- you no longer need a db. any db.

asciilifeform: trinque: nobody makes you relay tx that has future want-block.

asciilifeform: likewise you can reject, in O(1), any tx input which attempts to make use of a future ( > current-height ) block.

asciilifeform: (reject, that is, from mempool candidacy)

asciilifeform: to revisit upstack -- if you have 'want-block' field, you can auto-reject (in O(1) !!) any tx that comes in having a want-block that is <= current-height.

asciilifeform: and transform the problem into 'how do we keep enemy from jamming the low level transport', which is solved by signed-packets (or mircea_popescu's variant, or similar.)

asciilifeform: this would abolish the 'epicycle' of 'how do we rate-limit crapola'

asciilifeform: to clarify -- in my mind, a 'trb-i' ~must~ be capable of checking validity of tx at wire speed (i.e. at the speed it is physically capable of receiving them) on reasonable iron.

asciilifeform: danielpbarron: if this is desirable -- then can use scheme as described. otherwise can also require ~hash~ of the antecedent of the wanted-block.

asciilifeform: and mempool contents would have natural lifespans, as they presently do not.

asciilifeform: no longer would idiotic concept of 'ahahaha you're trying to DOUBLESPEND!' be a thing.

asciilifeform: however 'bbet scenario' would then also be abolished.

asciilifeform: ('value at birth' naturally implies 'encompassed by the signature')

asciilifeform: (alternatively, could require that a tx include a 'i want to live in block N' value at birth! and if it doesn't get into N, it is invalid for all time. but this would have serious engineering tradeoff, 'canned' txen as discussed in old mircea_popescu article would be impossible.)

asciilifeform: a mature (i.e. mined) tx's id will then consist of the concatenation of the block number it lives in (say, 64bit, enough until long after sun burns out), then a 10-bit offset into the block (0..1023) , then hash of payload.

asciilifeform: tx is, e.g., 1024 byte, then 1024 tx live in a block, etc.

asciilifeform: while we're on subj, why not make tx of fixed size ?

asciilifeform: a method of bitcoinating where you can actually get ~100% of the socialism out (as contemplated in, e.g., the gossip threads) would, i suspect, be a similar jump.

asciilifeform: there were not so many tech leaps comparable to hard vacuum (which makes possible everything from triode -- ergo, tuned radio, cathode tube, geiger, electron microscopy, 1,000,001 everyday items )

asciilifeform: pretty straight case of 'naturam expellas furca tamen usque recurret'

asciilifeform: trb node is, for instance, continuously engaged in the sin of 'something to allcomers'.

asciilifeform: ('hard', for n00bz, i will reminds, is when mean-free-path of particle is longer than the container is wide along any axis)

asciilifeform: (e.g., edison, was very frustrated, because it is physically impossible to get ~hard~ vacuum using , e.g., torricelli's methods, but he did not know this )

asciilifeform: bitcoin reminds me of... early attempts to pump hard vacuum.

asciilifeform: as nonsocialism themepark, if you will

asciilifeform: but that was ~whole motherfucking point, even of early bitcoin

asciilifeform: (... and, having to wait half hour for block eatings is not pain ?)

asciilifeform: how ? ohnoez, he has to wait for a tx to get mined before making children of it ?

asciilifeform: this would handily make the txindex db unnecessary entirely

asciilifeform: incidentally, does it melt anyone else's brain that satoshi's format for tx input did not mandate a 'and it is in block # N' field ?

asciilifeform: while we're on subj of idiot db: i looked into how to sanely aggregate writes in bdb. turned up 0.

asciilifeform: btw not only do i ask for this, but i would even buy a multi-ported ssd. to ACTUALLY read from two holes at same time. because in some applications, you can guarantee consistency using YOUR OWN system, and don't need to rely on some idiot's lock

asciilifeform: i recall one where i asked how to force unlocking for reads in pgsql , and found answer was 'fuckyou'

asciilifeform: so 'perfect' for 'the web' aka 'thing that does not actually need to work to any spec'

asciilifeform: what, every ddos maggot gets an accurate copy of the item he supposedly reads?

asciilifeform: so probably it isn't '1k/sec' then

asciilifeform: mircea_popescu: i thought you had a cachetron in there? or does every www load actually result in db reads

asciilifeform: point being that you can simply switch off reading for the few msec every day that you are actually writing, without causing headache

asciilifeform: so then.

asciilifeform: the one that crashes randomly ?

asciilifeform: general-purpose db, it turns out, is ALWAYS The Wrong Tool For Every Job (tm) -- like duct tape, and 'visegrip'...

asciilifeform: mircea_popescu, ben_vulpes , mod6 , et al: http://wotpaste.cascadianhacker.com/pastes/FEYhA/?raw=true << thus far on dulap.

asciilifeform: hey now it'll be ~100% solid 'womenz.' only, the kind with 6 legs.

asciilifeform: hey asciilifeform was 1 step ahead even of this! never used shitter

asciilifeform: heimbach did tho!111

asciilifeform: hey where would the islanders ever have seen airplane made not of straw.

asciilifeform: ben_vulpes: pretty idle lately , actually, trb is a procrastinatory escape from the hardstuff