91 / Platzi
La comunidad de aprendizaje donde desarrollas tus habilidades
Platzi, a learning community geared towards the Spanishspeaking audience. Naty, from Platzi, sheds light on the platform's vision, fostering a sense of community beyond mere content delivery. The importance of blockchain in Latin America was underscored, given the tech and language barriers. Platzi, with its eight different schools, emphasizes handson experiences like hackathons. The episode also touches on the broader perspective of blockchain's reception in Latin American governments, with countries like Argentina being rather skeptical. Another key highlight is the exploration of a technical Solidity issue about exponential decay presented by @037. The overarching theme emphasizes learning through doing, with a nod to Platzi's impactful role in the tech education space.
Timeline
Badges
@fulldecent
William Entriken Stayed to end
@dtedesco1
Daniel Tedesco Stayed to end
@037
AKM Stayed to end
@natyshi_
??? Stayed to end
@afri_deva
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@criptochocolate
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@uchihacfc
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@cliffvandercave
Cliff Vandercave Stayed to end
@teleworkgroupp
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@chelobyte
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@ervincastrop
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Episode notes
Edit these notes… Platzi huge online learning community for LATAM
 The Platzi NFT blog post interview with Naty
 SEC action against Impact Theory with NFTs as investments
 BAYC and OpenSea in a scuffle over royalties payments

Interview with @NatyShi_ and @platzi
 BS
 Found blockchain as a way for savings, good compared to fiat then got into the “rabbit hole”! There are still language/tech barriers for the articles/guides in this space.
 Why chemistry
 See blockchain + industrial in the future
 Barriers for blockchain in Latin America
 Documents are usually in only English
 Technically, too difficult
 Platzi for Spanish speaking audience, we need to share/help each other learn about tech especially b/c community is more important than the training
 “About the community, not just the content”
 Lots of platforms focused on financial gain, but not as many about helping
 Retirement plans, paying for subscriptions
 Sending money back home
 Buying foreign subscriptions like Netflix
 Platsy has 8 different schools
 Blockchain school is one of tehm, run by a director
 Also have course directors who produce content – applying best practices and help manage community
 Creators directly produce audiovisual content
 Not just listening to theory, also putting ideas into practice
 Activities like challenges and hackathons for the community to participate in
 Naty started 5 months ago, second person in the role
 First milestone is developing an understanding of needs, the second is creating products–we’re not going to survive on bounties
 It’s not negative to say we want to make money
 See https://platzi.com/blog/
 Will
 In the US we see a lot of ppl moving scam investing from offchain to onchain
 In latam, folks trying to only use blockchain for banking – getting money in and out – it’s a practical, real solution
 Defendable honest simple approach
 Platzi is similar to bootcamps in the US – “It’s better than learning. It’s just doing.”

See also: https://platzi.com/blog/hallegadoelfindelosnfts/

Help wanted, see our github issues

 Allows digital signing for one wallet from another wallet – for example, cold wallet at home and hot wallet on mobile phone
 Platzi interested to teach people proper security methods
 Naty “Freedom is linked to responsibility”
 Low security literacy in LatAm
 Account abstraction and delegates can be a good way to help
 What if you die tomorrow? Relatives won’t understand what to do with a seed phrase

Dan question “I want to hear Naty’s perspective on governments in Latam and how supportive or unsupportive they are of blockchain education efforts like Platzi”
 Argentinia has frozen banks in the bank and this may happen with custodial marketplaces and wallets
 Current position of the government is relatively anticrypto, but that may change with elections
 In Brazil it’s more open. Mercadolibre has their own coin
 It might not even include people thinking about technical topics like blockchain

https://www.theverge.com/2023/8/28/23849104/secnftactionsecuritiesimpacttheory

https://www.theverge.com/2023/8/18/23837677/baycopenseadropssupportcreatorroyaltyfees

@037 (if we have extra time): Solidity issue regarding exponents; I want to derive a computation for a rewards system using negative decay but solidity doesn’t seem to work well with fraction exponents. The formula I’m looking at is
“reward = reward * e^(1/100)” ,
Same as “reward = reward / e^(1/100)” (to avoid using a negative power) where each time it is computed it is less than what it was before (but in a manner where it can be executed as many times without exceeding its bounded limit). Euler’s number can be represented with a large uint256 (assuming no overflows and we divide it by a base number at the end so we don’t lose information) but the fraction in the exponent won’t work since 1/100 gets reduced to 0 since there are no decimals (and so e^0 is 1 and our reward stays the same after execution). Also, e^(1/100) is the same as 100 root (e), but calculating nth root seems gas expensive and not friendly towards numbers with 18 decimal places (typical ERC20 placement).
Some python code that simulates this: https://gist.github.com/649/9af085e528cbafbf6ff988518c36feed
Some references I’ve looked at: [https://ethereum.stackexchange.com/questions/38468/calculatethenthrootofanarbitraryuintusingsolidity
](https://ethereum.stackexchange.com/questions/38468/calculatethenthrootofanarbitraryuintusingsolidity)[https://ethereum.stackexchange.com/questions/80642/howcaniusethemathematicalconstanteinsolidity
](https://ethereum.stackexchange.com/questions/80642/howcaniusethemathematicalconstanteinsolidity)https://ethereum.stackexchange.com/questions/141698/howtoexpressanegativepowerinsolidity
Discussion
 Series of tokens given out, not a growth function
 Vulnerable to frontrunning
 Same wallet can’t click more than one
 The integral of an exponent is an integral – Not a converging number, but it doesn’t matter (because of gas costs)
 x_i = …, this is a sequence of numbers that keeps getting smaller each time (resets daily) and this will be a converging number
 value = x_i  gas = exp(1/100 * i)
 ***Will solves p=np*
 This ends up looking like a linear curve, but we’ll also need to subtract the gas cost
 For practical purposes, after a few 100 retrievals this becomes unprofitable for minters
 Also look at y = 1 / 1000
 Use Excel, Python notebooks