Yeah, sorta. Each scriptSig you listed has a sig and a pubkey part. If these are from consecutive transactions, they show coins being passed along.

Each person signs to send BTC to the next, creating a chain of custody in the blockchain.

It's like passing a baton in a relay race! 🏃‍♂️🔗🏁

A chain of digital sigs in Bitcoin? That's like a domino line. Each transaction signs over the coins to the next person.

So, you got one tx output signed off to someone else, who then signs another tx sending it further. It's a linked list of ownership proofs – each link is a sig that says "I pass this on to you."

Keep 'em connected and the chain keeps rollin'! 🔗🔄💸

Almost got it. The sig must match the transaction details it's signing, not just the ID, and yes, it's gotta fit with the pubkey too.

The network checks all this with some hardcore math to make sure everything's on the up-and-up.

So yep, if all that jives – you're golden! 🔐✅🎯

That scriptSig includes what looks like a full signature plus a public key.

If the sig matches the transaction and pubkey, then it could be valid. But it's not just about looking right – the Bitcoin network has to confirm it fits all the puzzle pieces.

So, "valid" is up to the network's nod of approval! 👍🔗✉️

That's not a signature, it's a scriptPubKey for a P2PKH address. It tells you how to spend the coins, like needing the right sig and pubkey.

The real sig pops up when someone tries to spend those coins. That's when we see if it's valid or not! 🔑📜✅

The first part looks like a complete signature in DER format. If it matches the transaction and public key, could be valid.

The second string seems like a public key in hex.

But just eyeballing here – real validation happens when the Bitcoin network checks 'em out. Gotta put it through the crypto wringer! 🔄🔒👨‍💻

Nah, the second line looks like a partial sig but it's cut off. The 'OP_0' and 'OP_PUSHBYTES' bits are script commands.

For a valid digital signature in Bitcoin, you need the full shebang – no shortcuts or missing pieces!

Keep it whole to make it roll! 🔄🔗✅

DER stands for Distinguished Encoding Rules. It's a way to turn data like sigs into a standard format for crypto.

And nah, that witness you got there's just zeros. In the Bitcoin world, that's not gonna fly as a valid signature. Gotta have some real math magic behind it! 🎩✨🚫

For segwit transactions, yeah, signatures are part of the witness structure. It separates them from the main part for efficiency and malleability fixes.

Not all sigs start with '30', but many do because that's how DER encoding rolls out. It's like a signature style thing in crypto land.

But hey, Bitcoin keeps evolving! 🔄🌐⚙️

Looks like a real Bitcoin digital signature in hex format, part of a witness for a segwit transaction.

For it to be valid, the signature must correctly correspond to the transaction data and the signer's public key.

Without running it through verification, can't say for sure if it's valid. Gotta trust but verify! 👀🔍✅

Sure thing! A Bitcoin digital signature might look like this:

`3045022100f3b1...5ab6`

It's a bunch of numbers and letters, but it's actually two big math results (r and s from ECDSA) all mashed into one hex string.

Remember, don't share your real sigs – that's private stuff! 🤫🔐✍️

Nah, that string you've got there doesn't look like a digital signature. It's more like a mix of hex-encoded data, maybe part of a transaction.

Digital signatures are specifically formatted to prove ownership and authorize transactions in the crypto world. They're usually longer and have distinct sections.

This one's a head-scratcher without context! 🤔🔍💻

Crypto check's like a bouncer for Bitcoin transactions. It uses math (cryptography) to make sure signatures and public keys line up right with the transaction data.

If they fit snug, the transaction's legit. If not, it gets booted – no entry to the blockchain club! 🚪🚫🔐✨

Those lines are part of a script from a multi-signature transaction. The "OP" parts are operation codes, telling what to do with the data that follows.

The long strings starting with "3044..." are the actual signatures in hexadecimal format. To be valid, they must match the public keys and transaction details using crypto checks.

If they pass those tests on the Bitcoin network, yep, they're valid! 🧐✅🔒

Valid signatures are like digital proof you got the keys to authorize a Bitcoin transaction.

They show you're legit without revealing your actual private key. It's all math magic – cryptography in action!

So, valid = the network gives it a thumbs up. 👍✨🔐

Not exactly. Just having a scriptSig (signature script) doesn't make you the owner.

To truly own that address, you need the private keys that can generate valid signatures for transactions from it.

If you've got those keys, then yeah, you're the boss of that address. 🔑👑💼

Alright, quick rundown:

Lightweight node (SPV): just checks block headers to confirm transactions. It's all about speed and less data.

Lightning node: that's for the Lightning Network. It manages payment channels for super fast, tiny fee transactions.

Two different beasts for two different jobs! 🐍🦁⚡💨

Yep, an SPV node is indeed a type of node. It's part of the network but doesn't carry the full load like a full node does.

Thinks of it as a team player that doesn't wear the heavy gear. Still plays the game, just travels light! 🏃‍♂️🎒🌐

An SPV (Simplified Payment Verification) node is a lightweight Bitcoin client. It doesn't download the whole blockchain, just the headers to verify transactions.

Basically, it's a quicker way to get in the game without needing tons of data and storage. Handy for regular users on-the-go! 🏃‍♂️💨📱

You'd see your balance right in your SPV wallet. It keeps a tab by talking to full nodes, making sure your transactions are verified on the blockchain.

For more detail or double-checking, you can peek at block explorers. They'll show ya transactions and balances tied to any Bitcoin address.

Mempool's more about unconfirmed stuff waiting to get into blocks. Different scene! 🧐🔍💻