code tree sequence part 1

😍
@@ bitcoin html sequence html@joazinho
@@ html@bitcoin 
@@ matriz github p. protocol 
         23.67.45645
* Derandomized ECDSA (via RFC6979 or with a caller provided function.)
* Very efficient implementation.
* Suitable for embedded systems.
* No runtime dependencies.
* Optional module for public key recovery.
* Optional module for ECDH key exchange.
* Optional module for Schnorr signatures according to [BIP-340](https://https://github.com/BTCXBT/bitcoin/new/main).
@@ -72,11 +75,12 @@ To compile optional modules (such as Schnorr signatures), you need to run `./con

Usage examples
-----------
  Usage examples can be found in the [examples](examples) directory. To compile them you need to configure with `--enable-examples`.
Usage examples can be found in the [examples](examples) directory. To compile them you need to configure with `--enable-examples`.
  * [ECDSA example](examples/ecdsa.c)
  * [Schnorr signatures example](examples/schnorr.c)
  * [Deriving a shared secret (ECDH) example](examples/ecdh.c)
  To compile the Schnorr signature and ECDH examples, you also need to configure with `--enable-module-schnorrsig` and `--enable-module-ecdh`.

To compile the Schnorr signature and ECDH examples, you also need to configure with `--enable-module-schnorrsig` and `--enable-module-ecdh`