New API functions #1:

/blockchain/self/header
/blockchain/self/append
/blockchain/self/read
/blockchain/self/add/file

The local blockchain now works, files metadata can be added and blocks read and decoded successfully.

API.md

@@ -14,7 +14,7 @@ The API is currently unauthenticated and intentionally provides direct access to
 
 The API is still in development and endpoints are subject to change. The API should be currently only used for debugging and early phase development purposes.
 
-## Configuartion
+## Configuration
 
 The configuration file (default `Config.yaml`) contains settings for the API. To listen on `http://127.0.0.1:112/` add this line:
 
@@ -39,9 +39,10 @@ These are the functions provided by the API:
 /status/ws                  Starts a websocket to receive updates on operations immediately (push instead of pull)
 /console                    Console provides a websocket to send/receive internal commands
 
-/blockchain/self/header     Header of the self peers blockchain
-/blockchain/self/read       Read the self peers blockchain
-/blockchain/self/append     Add a record to the blockchain
+/blockchain/self/header     Header of the blockchain
+/blockchain/self/append     Append a block to the blockchain
+/blockchain/self/read       Read a block of the blockchain
+/blockchain/self/add/file   Add file to the blockchain
 ```
 
 The `/share` functions are providing high-level functionality to work with files. The `/blockchain` functions provide low-level functionality which is typically not needed.
@@ -61,11 +62,12 @@ type apiResponseStatus struct {
 	Status        int  `json:"status"`        // Status code: 0 = Ok.
 	IsConnected   bool `json:"isconnected"`   // Whether connected to Peernet.
 	CountPeerList int  `json:"countpeerlist"` // Count of peers in the peer list. Note that this contains peers that are considered inactive, but have not yet been removed from the list.
+	CountNetwork  int  `json:"countnetwork"`  // Count of total peers in the network.
+	// This is usually a higher number than CountPeerList, which just represents the current number of connected peers.
+	// The CountNetwork number is going to be queried from root peers which may or may not have a limited view into the network.
 }
 ```
 
-Example response data: Todo
-
 ## Self Information
 
 This function returns information about the current peer.
@@ -76,7 +78,7 @@ Request:    GET /peer/self
 Response:   200 with JSON structure apiResponsePeerSelf
 ```
 
-The peer and node IDs are returned as hex encoded strings.
+The peer and node IDs are encoded as hex encoded strings.
 
 ```go
 type apiResponsePeerSelf struct {
@@ -85,8 +87,6 @@ type apiResponsePeerSelf struct {
 }
 ```
 
-Example response data: Todo
-
 ## Console
 
 The `/console` websocket allows to execute internal commands. This should be only used for debugging purposes by the end-user. The same input and output as raw text as via the command-line is provided through this endpoint.
@@ -94,3 +94,110 @@ The `/console` websocket allows to execute internal commands. This should be onl
 ```
 Request:    ws://127.0.0.1:112/console
 ```
+
+## Blockchain Self Header
+
+This function returns information about the current peer. It is not required that a peer has a blockchain. If no data is shared, there are no blocks. The blockchain does not formally have a header as each block has the same structure.
+
+```
+Request:    GET /blockchain/self/header
+
+Response:   200 with JSON structure apiBlockchainHeader
+```
+
+```go
+type apiBlockchainHeader struct {
+	PeerID  string `json:"peerid"`  // Peer ID hex encoded.
+	Version uint64 `json:"version"` // Current version number of the blockchain.
+	Height  uint64 `json:"height"`  // Height of the blockchain (number of blocks). If 0, no data exists.
+}
+```
+
+## Blockchain Append Block
+
+This appends a block to the blockchain. This is a low-level function for already encoded blocks.
+Do not use this function. Adding invalid data to the blockchain may corrupt it which subsequently might result in blacklisting by other peers.
+
+```
+Request:    POST /blockchain/self/append with JSON structure apiBlockchainBlockRaw
+
+Response:   200 with JSON structure apiBlockchainBlockStatus
+```
+
+```go
+type apiBlockRecordRaw struct {
+	Type uint8  `json:"type"` // Record Type. See core.RecordTypeX.
+	Data []byte `json:"data"` // Data according to the type.
+}
+
+type apiBlockchainBlockRaw struct {
+	Records []apiBlockRecordRaw `json:"records"` // Block records in encoded raw format.
+}
+
+type apiBlockchainBlockStatus struct {
+	Status  int    `json:"status"`  // Status: 0 = Success, 1 = Error invalid data
+	Version uint64 `json:"version"` // Current version number of the blockchain.
+	Height  uint64 `json:"height"`  // Height of the blockchain (number of blocks).
+}
+```
+
+## Blockchain Read Block
+
+This reads a block of the current peer.
+
+```
+Request:    GET /blockchain/self/read?block=[number]
+
+Response:   200 with JSON structure apiBlockchainBlock
+```
+
+```go
+type apiBlockchainBlock struct {
+	Status            int                 `json:"status"`            // Status: 0 = Success, 1 = Error block not found, 2 = Error block encoding (indicates that the blockchain is corrupt)
+	PeerID            string              `json:"peerid"`            // Peer ID hex encoded.
+	LastBlockHash     []byte              `json:"lastblockhash"`     // Hash of the last block. Blake3.
+	BlockchainVersion uint64              `json:"blockchainversion"` // Blockchain version
+	Number            uint64              `json:"blocknumber"`       // Block number
+	RecordsRaw        []apiBlockRecordRaw `json:"recordsraw"`        // Block records raw. Successfully decoded records are parsed into the below fields.
+	decoded           struct {
+		User  apiBlockRecordUser   `json:"user"`  // User details
+		Files []apiBlockRecordFile `json:"files"` // Files
+	} `json:"decoded"`
+}
+
+type apiBlockRecordUser struct {
+	NameValid     bool   `json:"namevalid"`     // Whether the name is supplied in this structure.
+	Name          string `json:"name"`          // Arbitrary name of the user.
+	NameSanitized string `json:"namesanitized"` // Sanitized version of the name.
+}
+
+type apiBlockRecordFile struct {
+	Hash      []byte // Hash of the file data
+	Type      uint8  // Type (low-level)
+	Format    uint16 // Format (high-level)
+	Size      uint64 // Size of the file
+	Directory string // Directory
+	Name      string // File name
+}
+```
+
+## Blockchain Add File
+
+This adds a file with the provided information to the blockchain.
+
+```
+Request:    POST /blockchain/self/add/file with JSON structure apiBlockAddFiles
+
+Response:   200 with JSON structure apiBlockchainBlockStatus
+```
+
+```go
+type apiBlockAddFiles struct {
+	Files []apiBlockRecordFile `json:"files"`
+}
+
+type apiBlockchainBlockStatus struct {
+	Status int    `json:"status"` // Status: 0 = Success, 1 = Error invalid data
+	Height uint64 `json:"height"` // New height of the blockchain (number of blocks).
+}
+```