Hints for solving the puzzles in Coinbase Wallet's Satoshi's Secret challenge

I posted this on 2 other subs a month ago, and it's been a journey solving this challenge together. Posting here for a larger audience.

What is the "Satoshi's Secret" challenge

There is a series of 9 crypto-related riddles from the official Coinbase Wallet that started on Dec 15th. You get airdropped NFTs after solving 1, 5, 8, and 9 riddles. While some of these NFTs are listed for over 1 ETH on Opensea, these are Soulbound NFTs, so they are just for fun and you can't actually sell them.

As of Jan 27, 204 people have solved Riddle #8, and 143 people have solved Riddle #9.

How to join Satoshi's Secret challenge

To start, you will need the Coinbase Wallet app with messaging enabled. Directions on how to contact the SatoshisSecret account are in this Coinbase Wallet Twitter post:

https://twitter.com/CoinbaseWallet/status/1735744299327795607

Please don't post any answers in the comments. Vague hints are fine. There are a limited number of mints.

General suggestions:

• Several of these puzzles are related to that L2 network Coinbase launched last year.
• You can guess answers as many times as possible
• The messenger only provides 1 hint per riddle. I've included all the official hints below
• Keep in mind that this puzzle launched mid-December, 2023. Any blockchain activity after that date isn't officially part of the riddle.
• If you've been in crypto with a focus on Ethereum for 2+ years, you should be able to solve #1-6.
• Riddles #1-4 are just common crypto terms.
• Starting from #6, you'll need to look up stuff.
• Riddles #7 and #8 are quite hard and require Google-fu and Blockchain explorer-fu.
• Riddle #9 is extremely difficult and 10x longer than #8.

The Riddles

I'm not posting the riddles themselves here. You can find them by joining the challenge. These are just hints for solving them.

Riddle #1: 'Transformation'

Official Hint: A non-backward-compatible change in a blockchain that results in two separate paths. Like a tough turn on a road, what's this termed in crypto?

My Hint: 2 words

Riddle #2: 'The Invisible Elevator'

Official Hint: I operate on top of the blockchain, reducing the burden with efficiency gained

My Hint: 2 words

Riddle #3: 'The Autonomous Artisan'

Official Hint: I'm built upon the blockchain, a program that's free to run. My creator's hand is absent once my public job's begun.

My Hint: Official Hint is bad. 4-letter crypto term.

Riddle #4: 'The Stoic Sentinel'

Official Hint: A misspelled word turned strategy, for investors who sit tight. Even when the charts show red, I hold my assets right.

My Hint: Most of you are familiar with the 4-letter form of this word. The riddle is asking for a type of person, so you have to enter the correct form of the word

Riddle #5: 'The Gaze in Your Eyes'

Official Hint: What's the tint of the orbs that light up the eyes?

My Hint: This one's kind of lame. I found multiple matches to what it's referring to, so just pick one

Riddle #6: 'EIP, you know me'

My Hint: If you have been following recent Ethereum developments, you should have heard of this EIP author by now

Riddle #7: 'Mann, what a jam'

Official Hint: In a world where tunes meet the blockchain's play, Seek an acronym that sings in a unique way. Born from a commitment, a melody each day, Find the short form of this musical array. It's not just a song, but a daily array, In letters concise, this title will sway. Three simple letters, they hold the key, To unlock this puzzle, what could they be?

My Hint: Misspelling in the riddle title is intentional. Needs Google-fu.

Riddle #8: 'RCS decodeme'

Official Hint: Beyond the NFT's facade, delve deep, To IPFS where hidden data sleep. Retrieve the root of the NFT, dive steep, Decode its core, a secret it does keep. With a tool, unveil the hidden lore, In metadata depths, explore more and more. A phrase lies buried, not just folklore, At the bottom, a digital key to the door.

My Hint: If you find an NFT collection with a message that end with "now what to do", you're almost there.

It has nothing to do with the right-click save website or with any account with "RCS" in the name.

Riddle #9: '128889'

Just giving you a warning, this one's insanely hard and nearly impossible to solve on your own. I'll leave a separate comment in this thread with a list of hints and breadcrumbs for solving #9. There was a team on the Base Discord channel that solved this first.

Official Hint: Goodluck...

Please don't post any answers in the comments. Vague hints are fine. There are a limited number of mints.