Haven't seen or heard from tacotime in a long time. Is he still active in XMR development?

At 2am today (my time)  -


[01:53:09] <tacotime> https://tools.ietf.org/html/draft-josefsson-eddsa-ed25519-03#section-5.6
[01:53:36] <tacotime> there's a step where you get r from SHA-512(prefix || M)
[01:54:10] <tacotime> where prefix is SHA-512(secret)[32:64]
[01:57:48] <tacotime> (the first half of the prefix is used to generate the scalar to use as a private key)
[01:58:08] <tacotime> my question is, can't prefix be anything and the won't the signature still be valid if it is?
[01:58:21] <tacotime> and is there any reason that doing this would be dangerous?
[01:59:27] <tacotime> i realize that if you use a bad value it might be like choosing a bad K in general
[01:59:38] <tacotime> but if your value is securely chosen, is it safe?
[02:34:26] <tacotime> and also
[02:34:26] <tacotime> is it possible to construct hd keychains from ed25519 private scalars? i don't really thing it is because there are four required bits that need to be set for an ed25519 scalar to be valid in terms of generating a signature
[02:34:26] <tacotime> i kinda wonder if there's a way around that though
[02:34:29] <tacotime> normally for an hd keychain you += hash(pubkey || index) to both the private scalar and public point
[02:35:38] <tacotime> so to get priv_i and pub_i
[02:36:06] <tacotime> priv_i = (priv + hash) mod N
[02:37:17] <tacotime> pub_i = (pub + scalarbasemult(hash))
[02:38:16] <tacotime> and how come monero doesn't run into this issue when it generates private keys through ecdh? does monero allow these scalars to be legal with the bits set anyway?
[02:38:37] <tacotime> because you'd expect 1 in every 2^4 scalars for any given derived keypair to be invalid
[02:38:42] <tacotime> but i'm probably missing something
[02:59:03] <tacotime> okay i figured out the zeroing out of the 3 lsbs
[02:59:12] <tacotime> that's just *= the cofactor
[02:59:29] <tacotime> but you do need one bit to be set in the private key for it to be useable, right??
[03:00:22] <tacotime> so when you ecdh a corresponding secret to the recipient, how can you tell with 100% certainty that the private key they will derive has a single set bit in the 254th position??

He's but at the moment less than some times in the past.

The thing is we are all part time with various other demands on our time so each team member's activity level varies over time.

Take NoodleDoodle for example. He did the critical early work to optimizing (or de-unoptimizing and de-obfuscating if you want to call it that) the proof-of-work last year and you didn't hear much from him for a while, although he was still somewhat active behind the scenes. Then recently he did a huge amount of work to fix and optimize the database code. It's pretty much the same for every single one of us.

academic using pseudonym

 

Is "Shen Noether" a member of bitcointalk that comes in these threads frequently? If so, could he maybe give us the low down of what everything means in the paper? I would love to learn more about what's going to happen in the future with XMR.

Amounts would now be hidden so your set of potential ring partners is much larger.

Im not an expert in zerocash, but it will mean hidden amounts, origins, and destinations, while viewkeys will still work, and of course it will still be auditable.

Is the CT in Monero bullish or bearish? I thought Monero Tx's were already so obfuscated as to not need something like CT.

As well as being default, is it an enforced minimum?

it was accepted, it was even on the asks yesterday night, thats why i am confused.

my impression was as soon as he takes it he has to pay the 24h reate at least once..am i wrong?

but i will double check later..

edit: found it, example here:

XMR   -   Lending Earning   2.0000%   208.92286763   15%   0.15301665 XMR   2015-10-11 18:08:58

i dont get it...looks like Hour or even minute based?

that would be cool i guess...

I share the same opinion. As soon as I saw Automated Transactions (AT) in action I knew that separate ETH-stile systems are of no need and are way overpriced and overhyped. The time will come and we'll have it implemented in Monero.

Monero price speculation: Some people want the Monero price to be low despite that it could lead to loose of momentum. It could be malicious or they want to buy lower and lower. It's done with little resources - when the selling bot is operational it's selling just 10-15000 per 24 hours and there are some bigger dumps designed to create panic sells. Those big dumps could be someone dumping on his own walls in exchange of a poloniex fee, but he's getting big discount on the price for buying more. The actual fuel for this is the guys who panicked and also those who saw the downtrend painted by the bot. Depending on the resources used for this or the amount needed to be bought this could continue for a while or stop instantly. I don't like this pump and dump behavior and I think Monero is oversold now, but I feel good both ways - I'm buying more on each and every considerable swing.

I'm not really being hostile I'm sorry if it is being perceveid as this (except to Illodin because he will keep assuming things to fit his narrative).

What about we tone it down and remain respectful to one another?

Conceivably.  But it seems more likely to consolidate support. Taking 8k 35k xmr from stupid hands and putting them into stronger hands isn't such a bad thing!

I suspect (on the basis that usd correlation appears higher than btc correlation, and that the principal egress point is a u.s. exchange) that u.s. persons are largely defining price,  and u.s. confidence in central planning seems high and mostly rising, albeit with many spreading marginal pockets of un-confidence.

UPDATE: Another 12-13k was taken out to borrow and was subsequently added to the asks. There is now ~25k until 0.0016, from which approximately 90% are from the shorting entity, so that's ~22.5k (note that he also took out some XMR after the dump). Furthermore, he already dumped ~11k and perhaps even more before that. So I am guessing his current short position is around 35k, perhaps even more. A bold move with these current prices if you ask me.

P.S. Bear in mind he has to buy this back at some point and if I recall correctly most of the offers were for a short duration. Thus, he most likely has to return most of the 35k XMR within the next 2 days (meaning he has to buy it back on the market within the next 2 days).

It seems that someone is really eager to short, because demand is spiking now as well. Someone wants to borrow (demands) ~8k+ XMR at a rate of 2% per day. Even though the rate is high, I would advise no one to put his XMR up for offer, because it could really hurt the market.

Regarding last 2 medium sized dumps (~6k & ~5k), it's someone shorting again:



Left column is the aggregate offers, center column is the aggregate demand and right column the weighted average interest rate.

Take a look yourself -> http://monerodice.pd.to/polo.php

All of this information is relevant to the state of Monero.

Do you not agree?