Extend docstring for more types

src/blockdata/block.rs

@@ -37,8 +37,12 @@ use crate::blockdata::constants::{max_target, WITNESS_SCALE_FACTOR};
 use crate::blockdata::script;
 use crate::VarInt;
 
-/// A block header, which contains all the block's information except
-/// the actual transactions
+/// Bitcoin block header.
+///
+/// Contains all the block's information except the actual transactions, but
+/// including a root of a [merkle tree] commiting to all transactions in the block.
+///
+/// [merkle tree]: https://en.wikipedia.org/wiki/Merkle_tree
 ///
 /// ### Bitcoin Core References
 ///
@@ -164,8 +168,17 @@ impl BlockHeader {
     }
 }
 
-/// A Bitcoin block, which is a collection of transactions with an attached
-/// proof of work.
+/// Bitcoin block.
+///
+/// A collection of transactions with an attached proof of work.
+///
+/// See [Bitcoin Wiki: Block][wiki-block] for more information.
+///
+/// [wiki-block]: https://en.bitcoin.it/wiki/Block
+///
+/// ### Bitcoin Core References
+///
+/// * [CBlock definition](https://github.com/bitcoin/bitcoin/blob/345457b542b6a980ccfbc868af0970a6f91d1b82/src/primitives/block.h#L62)
 #[derive(PartialEq, Eq, Clone, Debug)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 pub struct Block {

src/blockdata/script.rs

@@ -46,7 +46,20 @@ use crate::util::taproot::{LeafVersion, TapBranchHash, TapLeafHash};
 use secp256k1::{Secp256k1, Verification, XOnlyPublicKey};
 use crate::schnorr::{TapTweak, TweakedPublicKey, UntweakedPublicKey};
 
-/// A Bitcoin script.
+/// Bitcoin script.
+///
+/// A list of instructions in a simple, [Forth]-like, stack-based programming language
+/// that Bitcoin uses.
+///
+/// [Forth]: https://en.wikipedia.org/wiki/Forth_(programming_language)
+///
+/// See [Bitcoin Wiki: Script][wiki-script] for more information.
+///
+/// [wiki-script]: https://en.bitcoin.it/wiki/Script
+///
+/// ### Bitcoin Core References
+///
+/// * [CScript definition](https://github.com/bitcoin/bitcoin/blob/d492dc1cdaabdc52b0766bf4cba4bd73178325d0/src/script/script.h#L410)
 #[derive(Clone, Default, PartialOrd, Ord, PartialEq, Eq, Hash)]
 pub struct Script(Box<[u8]>);
 

src/blockdata/transaction.rs

@@ -53,6 +53,10 @@ const UINT256_ONE: [u8; 32] = [
 ];
 
 /// A reference to a transaction output.
+///
+/// ### Bitcoin Core References
+///
+/// * [COutPoint definition](https://github.com/bitcoin/bitcoin/blob/345457b542b6a980ccfbc868af0970a6f91d1b82/src/primitives/transaction.h#L26)
 #[derive(Copy, Clone, Debug, Eq, Hash, PartialEq, PartialOrd, Ord)]
 pub struct OutPoint {
     /// The referenced transaction's txid.
@@ -187,7 +191,15 @@ impl ::core::str::FromStr for OutPoint {
     }
 }
 
-/// A transaction input, which defines old coins to be consumed
+/// Bitcoin transaction input.
+///
+/// It contains the location of the previous transaction's output,
+/// that it spends and set of scripts that satisfy its spending
+/// conditions.
+///
+/// ### Bitcoin Core References
+///
+/// * [CTxIn definition](https://github.com/bitcoin/bitcoin/blob/345457b542b6a980ccfbc868af0970a6f91d1b82/src/primitives/transaction.h#L65)
 #[derive(Clone, PartialEq, Eq, PartialOrd, Ord, Debug, Hash)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 pub struct TxIn {
@@ -220,7 +232,17 @@ impl Default for TxIn {
     }
 }
 
-/// A transaction output, which defines new coins to be created from old ones.
+/// Bitcoin transaction output.
+///
+/// Defines new coins to be created as a result of the transaction,
+/// along with spending conditions ("script", aka "output script"),
+/// which an input spending it must satisfy.
+///
+/// An output that is not yet spent by an input is called Unspent Transaction Output ("UTXO").
+///
+/// ### Bitcoin Core References
+///
+/// * [CTxOut definition](https://github.com/bitcoin/bitcoin/blob/345457b542b6a980ccfbc868af0970a6f91d1b82/src/primitives/transaction.h#L148)
 #[derive(Clone, PartialEq, Eq, PartialOrd, Ord, Debug, Hash)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 pub struct TxOut {
@@ -237,7 +259,19 @@ impl Default for TxOut {
     }
 }
 
-/// A Bitcoin transaction, which describes an authenticated movement of coins.
+/// Bitcoin transaction.
+///
+/// An authenticated movement of coins.
+///
+/// See [Bitcoin Wiki: Transaction][wiki-transaction] for more information.
+///
+/// [wiki-transaction]: https://en.bitcoin.it/wiki/Transaction
+///
+/// ### Bitcoin Core References
+///
+/// * [CTtransaction definition](https://github.com/bitcoin/bitcoin/blob/345457b542b6a980ccfbc868af0970a6f91d1b82/src/primitives/transaction.h#L279)
+///
+/// ### Serialization notes
 ///
 /// If any inputs have nonempty witnesses, the entire transaction is serialized
 /// in the post-BIP141 Segwit format which includes a list of witnesses. If all