Minor edits to sponsor link, added security notes

.github/FUNDING.yml

@@ -1,4 +1,4 @@
 # These are supported funding model platforms
 
 github: BitcoinSchema
-custom: https://gobitcoinsv.com/?tab=tips&af=go-bitcoin
+custom: https://gobitcoinsv.com/#sponsor

README.md

@@ -7,7 +7,7 @@
 [![codecov](https://codecov.io/gh/BitcoinSchema/go-bitcoin/branch/master/graph/badge.svg?v=3)](https://codecov.io/gh/BitcoinSchema/go-bitcoin)
 [![Go](https://img.shields.io/github/go-mod/go-version/BitcoinSchema/go-bitcoin?v=3)](https://golang.org/)
 [![Sponsor](https://img.shields.io/badge/sponsor-BitcoinSchema-181717.svg?logo=github&style=flat&v=3)](https://github.com/sponsors/BitcoinSchema)
-[![Donate](https://img.shields.io/badge/donate-bitcoin-ff9900.svg?logo=bitcoin&style=flat&v=3)](https://gobitcoinsv.com/?tab=tips&af=go-bitcoin)
+[![Donate](https://img.shields.io/badge/donate-bitcoin-ff9900.svg?logo=bitcoin&style=flat&v=3)](https://gobitcoinsv.com/#sponsor)
 
 <br/>
 
@@ -164,7 +164,7 @@ View the [contributing guidelines](CONTRIBUTING.md) and follow the [code of cond
 All kinds of contributions are welcome :raised_hands:!
 The most basic way to show your support is to star :star2: the project, or to raise issues :speech_balloon:.
 You can also support this project by [becoming a sponsor on GitHub](https://github.com/sponsors/BitcoinSchema) :clap:
-or by making a [**bitcoin donation**](https://gobitcoinsv.com/?af=go-bitcoin) to ensure this journey continues indefinitely! :rocket:
+or by making a [**bitcoin donation**](https://gobitcoinsv.com/#sponsor) to ensure this journey continues indefinitely! :rocket:
 
 <br/>
 

SECURITY.md

@@ -0,0 +1,13 @@
+# Security Policy
+
+## Supported & Maintained Versions
+
+| Version | Supported          |
+| ------- | ------------------ |
+| 0.x.x   | :white_check_mark: |
+
+## Reporting a Vulnerability
+
+Individuals or organizations that are experiencing a product security issue are strongly encouraged to contact the [project maintainers](mailto:secuiry@bitcoinschema.org).
+We welcome reports from independent researchers, industry organizations, vendors, customers, and other sources concerned with our project security.
+The minimal data needed for reporting a security issue is a description of the potential vulnerability.