Presented by: Core Dev Team
Technical Walkthrough
BLOCKHAIN LAYER
STREAMING LAYER
STORAGE LAYER
CONSENSUS PROTOCOL
ARCHITECTURE OVERVIEW
NEM Catapult
PeerStream Protocol - Media Routing, Presence and Messaging
IPFS P2P Storage
Proof of Importance, Proof of Storage and Proof of Bandwidth
API Gateway
External DApp Development
IPFS (Interplanetary File System)
IPFS is a protocol and network designed to create a content-addressable, peer-to-peer method of storing and sharing hypermedia in a distributed file system
How IPFS Works
Bob adds a file to IPFS and is assigned a unique fingerprint called a cryptographic hash. Automatic deduplication of data prevents duplicate files.
(example: QmR7GSQM93Cx5e...)
Alice downloads the file using the unique hash.
When looking up files, you're asking the network to find nodes storing the content behind a unique hash
Ken downloads the same file using the hash.
Downloads simultaneously from different nodes as files are segmented into chunks, each with 256kb size
NEM Blockchain Platform
| Block |
| ~120 TXNs Transaction 1..120 |
| Block |
| ~120 TXNs Transaction 1..120 |
| Block |
| ~120 TXNs Transaction 1..120 |
| Block |
| ~120 TXNs Transaction 1..120 |
A message of at most 1024 bytes can be attached to each transfer transaction. This makes storing of large files in the blockchain impossible!
Combining NEM and IPFS
The ProximaX Solution
| Block |
|
Transfer Transaction Message |
{
"digest":"04d185c832f6.....",
"hash":"QmWDQegEhLdCUWF6a...",
"keywords":"plain,file,text",
"metaData":"{'name':'some-data'}",
"name":"filename.txt",
"timestamp":1521154256963,
"type":"text/plain"
}| Field | Description |
|---|---|
| digest | This is a content based signature of the file for validation |
| hash | The base58 encoded string IPFS reference |
| keywords | A custom field that can be used to tag a specific file. Searchable |
| metaData | JSON structured text for additional meta data. Searchable |
| name | The name of the file (with or without extension) |
| timestamp | The actual time that the file was uploaded to IPFS |
| type | Content type of the file |
ProximaX P2P Storage Benefit
High Availability
Files can be replicated across peers to ensure that they are always available to be consumed by any peers on the network.
Fault tolerant
Peers on the network allows operational continuity in the event of single or multiple peer failure
Deduplication
The solution will have a data compression technology that detects duplicate files and avoid copying the same file to the
network.
ProximaX P2P Storage Benefit
Content-addressable storage
A mechanism for storing information that can be retrieved based on its content, not its storage location
Scalability
The storage solution will scale based on the number of peers that participates on the network
Web Service HTTP API
The P2P storage nodes will have a built in Exposed Web Services endpoints for developers to easily integrate the storage with their decentralised applications.
ProximaX Ecosystem
NEM Blockchain Platform Consensus Protocol
Full client ProximaX node - it runs an IPFS locally
Light client ProximaX node - only interfaces through the HTTP REST Endpoint
ProximaX Technical Overview - (trimmed down version)
By carloproximax
ProximaX Technical Overview - (trimmed down version)
ProximaX Technical Overview - storage
