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Benet Ipfs Blockchain

The document discusses InterPlanetary Linked Data (IPLD), a common format for distributed data structures that uses hash linking and merkle trees. IPLD allows for distributed data structures that are authenticated, immutable, and securely linked through cryptographic hashes. It provides a universal way to address and retrieve nested data in distributed systems like IPFS.

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Donyitpro
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394 views77 pages

Benet Ipfs Blockchain

The document discusses InterPlanetary Linked Data (IPLD), a common format for distributed data structures that uses hash linking and merkle trees. IPLD allows for distributed data structures that are authenticated, immutable, and securely linked through cryptographic hashes. It provides a universal way to address and retrieve nested data in distributed systems like IPFS.

Uploaded by

Donyitpro
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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Blockchains and the Web

https://ipfs.io @juanbenet
/ipns/ipfs.io 2016-06-29
0.
1. multi formats

2. IPLD
3.
0.
1. multi formats

2. IPLD
3.
WEB 1.0
WEB 2.0
WEB 3.0
verifiable, decentralized
applications

smart contracts
+ MPC

secure consensus
+ transaction ledger

secure data structures



IPLD + merkle web

secure, high perf


p2p networking
a new hypermedia distribution protocol
(a new web transport protocol)
the web has problems

bad in mobile and IoT


censorship

no offline use
huge inefficiencies

bad security model


links break
large open source project
400+ contributors
70+ contribute weekly
The Stack applications Using the Data

IPNS naming

Defining the Data


IPLD merkledag

exchange

routing Moving the Data


network
applications Etherpad Websites Orbit Mediachain uPort

naming Blockstack DNS IPNS Namecoin EthNames

IPLD

exchange BitTorrent Bitswap FTP HTTP

routing Gossip Chord Kad DHT mDNS Delegated I2P TOR

network CJDNS UDT uTP WebRTC QUIC TCP WebSockets I2P TOR
/dns/example.com/foo/bar/baz.png
dns name /ipns/example.com/foo/bar/baz.png

key name /ipns/QmYJPtosPTfoC/foo/bar/baz.png

content addr /ipfs/QmW98pJrc6FZ6/foo/bar/baz.png


fs:/ipfs/QmW98pJrc6FZ6/foo/bar/baz.png
ipfs:/ipfs/QmW98pJrc6FZ6/foo/bar/baz.png
distributed webapps
- app code stored + distributed with ipfs
- app data stored + distributed with ipfs
- browsers can connect to each other
- no origin servers!
- no central point of failure
- everything end-to-end encrypted
- app "lives on the network"

examples: forums, chat, messaging,


cms, blogs, github, ...
used for package managers

- distributed / peer-to-peer
- cryptographically verified links
- digitally signed links
- "everyone is a mirror"
- save lots of bandwidth
- versioning built in
npm on ipfs
github.com/diasdavid/registry-mirror
works with vanilla npm
npm on ipfs gx
github.com/diasdavid/registry-mirror github.com/whyrusleeping/gx
works with vanilla npm extensible pkg mgr
gx-go for Golang!
used for secure documents
- content addressed hash links
- digitally signed links
- trustless ledgers
- permanent links
- secure document web

already in use at:


- banks
- legal archives
- blockchain companies
- smart contract apps
Orbit
github.com/haadcode/orbit
p2p chat on IPFS

IPLD
0.
1. multi formats

2. IPLD
3.
multiformats - self describing values
protocol agility, interop, avoid lock in


multihash
multiaddr
multibase
multicodec
multistream
multikey
multiformats - self describing values
protocol agility, interop, avoid lock in


multihash - cryptographic hashes
multiaddr
multibase
multicodec
multistream
multikey
0x08e11fc41466fcda0af7dee0905605d9
e4aada4961542da952c8bb93080cc6f9

0x95a1b32bd70332e24f63f3802aae5f5e
1fa4622cc72750e0073bbbb6dcf6fce7

0xcaadb37a46daeda4e0d5e61574a9aaca
211d513806a026e6cc4461f7ba7867f9

0x08fbea061a5dea457d69fe5c12575c1d
9d30c49f575936f6e1c6d4ea0ab078df
256 0x08e11fc41466fcda0af7dee0905605d9
e4aada4961542da952c8bb93080cc6f9

256 0x95a1b32bd70332e24f63f3802aae5f5e
1fa4622cc72750e0073bbbb6dcf6fce7

256 0xcaadb37a46daeda4e0d5e61574a9aaca
211d513806a026e6cc4461f7ba7867f9

256 0x08fbea061a5dea457d69fe5c12575c1d
9d30c49f575936f6e1c6d4ea0ab078df
sha2 256 256 0x08e11fc41466fcda0af7dee0905605d9
e4aada4961542da952c8bb93080cc6f9

sha2 512 256 0x95a1b32bd70332e24f63f3802aae5f5e


1fa4622cc72750e0073bbbb6dcf6fce7

sha3 256 0xcaadb37a46daeda4e0d5e61574a9aaca


211d513806a026e6cc4461f7ba7867f9

blake2b 256 0x08fbea061a5dea457d69fe5c12575c1d


9d30c49f575936f6e1c6d4ea0ab078df
sha2 256 256 112008e11fc41466fcda0af7dee0905605d9
e4aada4961542da952c8bb93080cc6f9

sha2 512 256 122095a1b32bd70332e24f63f3802aae5f5e


1fa4622cc72750e0073bbbb6dcf6fce7

sha3 256 1420caadb37a46daeda4e0d5e61574a9aaca


211d513806a026e6cc4461f7ba7867f9

blake2b 256 402008fbea061a5dea457d69fe5c12575c1d


9d30c49f575936f6e1c6d4ea0ab078df
112008e11fc41466fcda0af7dee0905605d9
e4aada4961542da952c8bb93080cc6f9

11 20 08e11fc41466fcda0af7dee0905605d9
e4aada4961542da952c8bb93080cc6f9

fn code length hash digest


multihash - cryptographic hashes

- self describing
- in the value itself (not out of band)
- as small as possible
- no assumptions
- no lock in
- interop of hash functions
multiformats - self describing values
protocol agility, interop, avoid lock in


multihash - cryptographic hashes
multiaddr - network addresses
multibase - base encodings
multicodec - serialization codecs
multistream - stream wire protocols
multikey - cryptographic keys and artifacts
multiaddr - network addresses

/ip6/::1/tcp/80/http

/ip4/1.2.3.4/udp/5001/sctp/sip

/ip4/1.2.3.4/udp/5002/utp/bittorrent

/ip4/1.2.3.4/udp/5003/quic/ipfs

/onion/3g2upl4pq6kufc4m/80/http
multiformats - self describing values
protocol agility, interop, avoid lock in


multihash - cryptographic hashes
multiaddr - network addresses
multibase - base encodings
multicodec - serialization codecs
multistream - stream wire protocols
multikey - cryptographic keys and artifacts
multiformats - self describing values
protocol agility, interop, avoid lock in


multihash - In Value (not OOB)
multiaddr - Small, Binary (perf)
multibase - Human Readable
multicodec
- Stable
multistream - Starting Standard Now
multikey - Impls in many langs
0.
1. multi formats

2. IPLD
3.
distributed data structures

authenticated data structures

hash linked data structures


IPFS is like a forest of linked merkle-trees
IPLD
a common hash-chain format
for distributed data structures
IPLD
- merkle-links secure, immutable
- merkle-paths /ipfs/Qmabc…xyz/foo/bar.jpg
- canonical hashing safe
- universal nestable URIs
- serialization CBOR, JSON, YML, XML, PB
- linked data JSON-LD, RDF compatible
IPLD
a common hash-chain format
for distributed data structures

\o/ Ready for Standardization! \o/


> var ipld = require('ipld')

> var obj1 = { "data": "Hello " }


> var ipld = require('ipld')

> var obj1 = { "data": "Hello " }

> var obj1Data = ipld.marshal(obj)


> obj1Data.toString('base64')
oWRkYXRhZkhlbGxvIA==
> var ipld = require('ipld')

> var obj1 = { "data": "Hello " }

> var obj1Data = ipld.marshal(obj)


> obj1Data.toString('base64')
oWRkYXRhZkhlbGxvIA==

> var obj1Hash = ipld.multihash(obj1Data)


> obj1Hash
QmUUuaDDWvRG23zyzBQVv43etRqmbGCRNhgZYu9qvZ88Bg
> var ipld = require('ipld')

> var obj1 = { "data": "Hello " }


> var obj1Data = ipld.marshal(obj1)
> var obj1Hash = ipld.multihash(obj1Data)
> var ipld = require('ipld')

> var obj1 = { "data": "Hello " }


obj1
> var obj1Data = ipld.marshal(obj1)
> var obj1Hash = ipld.multihash(obj1Data)
> var ipld = require('ipld')

> var obj1 = { "data": "Hello " }


obj1
> var obj1Data = ipld.marshal(obj1)
> var obj1Hash = ipld.multihash(obj1Data)

> var obj2 = { "data": "World\n" }


> var obj2Data = ipld.marshal(obj2) obj2
> var obj2Hash = ipld.multihash(obj2Data)

> obj2Hash
QmSVuc2kjbtCFQ9ur8fnyKUKvSyLZMTBVbZugJWChydAHV
> var obj3 = {
"files": [
{ "/": "QmUUuaDDWvRG23zyzBQVv43etRqmbGCRNhgZYu9qvZ88Bg" },
{ "/": "QmSVuc2kjbtCFQ9ur8fnyKUKvSyLZMTBVbZugJWChydAHV" },
]
}
> var obj3Data = ipld.marshal(obj3)
> var obj3Hash = ipld.multihash(obj3Data)

> obj3Hash
QmdhMzs1tkLYwC3jimzUABEt1xzkrokkanywe1y1QFcAhw
obj3
> var obj3 = {
"files": [
{ "/": "QmUUuaDDWvRG23zyzBQVv43etRqmbGCRNhgZYu9qvZ88Bg" },
{ "/": "QmSVuc2kjbtCFQ9ur8fnyKUKvSyLZMTBVbZugJWChydAHV" },
]
} \___ HASH LINKS!
> var obj3Data = ipld.marshal(obj3)
> var obj3Hash = ipld.multihash(obj3Data)

> obj3Hash
QmdhMzs1tkLYwC3jimzUABEt1xzkrokkanywe1y1QFcAhw
obj3
> var obj3 = {
"files": [
{ "/": "QmUUuaDDWvRG23zyzBQVv43etRqmbGCRNhgZYu9qvZ88Bg" },
{ "/": "QmSVuc2kjbtCFQ9ur8fnyKUKvSyLZMTBVbZugJWChydAHV" },
]
} \___ HASH LINKS!
> var obj3Data = ipld.marshal(obj3)
> var obj3Hash = ipld.multihash(obj3Data)

HASH LINKS!
/
obj1
obj3

obj2
> var ipfs = require('ipfs')
obj1
obj3
> ipfs.add(obj1)
> ipfs.add(obj2) obj2
> ipfs.add(obj3)
> var ipfs = require('ipfs')
obj1
obj3
> ipfs.add(obj1)
> ipfs.add(obj2) obj2
> ipfs.add(obj3)

> ipfs.resolve("QmUUuaDDWvRG23zyzBQVv43etRqmbGCRNhgZYu9qvZ88Bg")
{ "data": "Hello " }

> ipfs.resolve("QmSVuc2kjbtCFQ9ur8fnyKUKvSyLZMTBVbZugJWChydAHV")
{ "data": "World\n" }
> var ipfs = require('ipfs')
obj1
obj3
> ipfs.add(obj1)
> ipfs.add(obj2) obj2
> ipfs.add(obj3)

> ipfs.resolve("QmUUuaDDWvRG23zyzBQVv43etRqmbGCRNhgZYu9qvZ88Bg")
{ "data": "Hello " }

> ipfs.resolve("QmSVuc2kjbtCFQ9ur8fnyKUKvSyLZMTBVbZugJWChydAHV")
{ "data": "World\n" }

> ipfs.resolve("QmUUuaDDWvRG23zyzBQVv43etRqmbGCRNhgZYu9qvZ88Bg/data")
"Hello "

> ipfs.resolve("QmSVuc2kjbtCFQ9ur8fnyKUKvSyLZMTBVbZugJWChydAHV/data")
"World "
> var ipfs = require('ipfs')
obj1
obj3
> ipfs.add(obj1)
> ipfs.add(obj2) obj2
> ipfs.add(obj3)

> ipfs.resolve("QmdhMzs1tkLYwC3jimzUABEt1xzkrokkanywe1y1QFcAhw")
{
"files": [
{ "/": "QmUUuaDDWvRG23zyzBQVv43etRqmbGCRNhgZYu9qvZ88Bg" },
{ "/": "QmSVuc2kjbtCFQ9ur8fnyKUKvSyLZMTBVbZugJWChydAHV" },
]
}
> var ipfs = require('ipfs')
obj1
obj3
> ipfs.add(obj1)
> ipfs.add(obj2) obj2
> ipfs.add(obj3)

> ipfs.resolve("QmdhMzs1tkLYwC3jimzUABEt1xzkrokkanywe1y1QFcAhw")
{
"files": [
{ "/": "QmUUuaDDWvRG23zyzBQVv43etRqmbGCRNhgZYu9qvZ88Bg" },
{ "/": "QmSVuc2kjbtCFQ9ur8fnyKUKvSyLZMTBVbZugJWChydAHV" },
]
}

> ipfs.resolve("QmdhMzs1tkLYwC3jimzUABEt1xzkrokkanywe1y1QFcAhw/files")
[
{ "/": "QmUUuaDDWvRG23zyzBQVv43etRqmbGCRNhgZYu9qvZ88Bg" },
{ "/": "QmSVuc2kjbtCFQ9ur8fnyKUKvSyLZMTBVbZugJWChydAHV" },
]
> var ipfs = require('ipfs')
obj1
obj3
> ipfs.add(obj1)
> ipfs.add(obj2) obj2
> ipfs.add(obj3)

> ipfs.resolve("QmdhMzs1tkLYwC3jimzUABEt1xzkrokkanywe1y1QFcAhw/files/0")
{ "data": "Hello " }

> ipfs.resolve("QmdhMzs1tkLYwC3jimzUABEt1xzkrokkanywe1y1QFcAhw/files/1")
{ "data": "World\n" }

> ipfs.resolve("QmdhMzs1tkLYwC3jimzUABEt1xzkrokkanywe1y1QFcAhw/files/0/data")
"Hello "

> ipfs.resolve("QmdhMzs1tkLYwC3jimzUABEt1xzkrokkanywe1y1QFcAhw/files/1/data")
"World "
> function catFile(link) {
obj1
var obj = ipfs.resolve(link) obj3
var out = obj.data || ""
for (var file of (obj.files || [])) { obj2
out += catFile(file)
}
return out
}
{
"data": "<content>",
"files": [
<subfile-link>,
<subfile-link>,
<subfile-link>,
...
]
}
> function catFile(link) {
obj1
var obj = ipfs.resolve(link) obj3
var out = obj.data || ""
for (var file of (obj.files || [])) { obj2
out += catFile(file)
}
return out
}

> catFile("QmUUuaDDWvRG23zyzBQVv43etRqmbGCRNhgZYu9qvZ88Bg")
"Hello "

> catFile("QmSVuc2kjbtCFQ9ur8fnyKUKvSyLZMTBVbZugJWChydAHV")
"World\n"
> function catFile(link) {
obj1
var obj = ipfs.resolve(link) obj3
var out = obj.data || ""
for (var file of (obj.files || [])) { obj2
out += catFile(file)
}
return out
}

> catFile("QmUUuaDDWvRG23zyzBQVv43etRqmbGCRNhgZYu9qvZ88Bg")
"Hello "

> catFile("QmSVuc2kjbtCFQ9ur8fnyKUKvSyLZMTBVbZugJWChydAHV")
"World\n"

> catFile("QmdhMzs1tkLYwC3jimzUABEt1xzkrokkanywe1y1QFcAhw")
"Hello World\n"
0.
1. multi formats

2. IPLD
3.
The Stack applications Using the Data

IPNS naming

Defining the Data


IPLD merkledag

exchange

routing Moving the Data


network
a collection of peer-to-peer protocols

for finding peers, and connecting to them


for finding content, and transferring it

exchange BitTorrent Bitswap FTP HTTP

routing Gossip Chord Kad DHT mDNS Delegated I2P TOR

network CJDNS UDT uTP WebRTC QUIC TCP WebSockets I2P TOR
a collection of peer-to-peer protocols

NAT
pub Kad Kad
Content Routing mDNS ICE Traversal
sub DHT ICE

Kad
Peer Routing mDNS DNS DVs STUN TURN
DHT

boot Kad
Discovery mDNS DNS PEX PKI
strap DHT

Transports TCP uTP QUIC SCTP BLE TOR I2P


libp2p

Content Routing

Peer Routing

Discovery

Transports

NAT Traversal
libp2p

Content Routing

Peer Routing

Discovery

Transports

NAT Traversal
Orbit
github.com/haadcode/orbit
p2p chat on IPFS

IPLD
Blockchains and the Web

https://ipfs.io @juanbenet
/ipns/ipfs.io 2016-06-29
applications Etherpad Websites Orbit Mediachain uPort

naming Blockstack DNS IPNS Namecoin EthNames

IPLD

exchange BitTorrent Bitswap FTP HTTP

routing Gossip Chord Kad DHT mDNS Delegated I2P TOR

network CJDNS UDT uTP WebRTC QUIC TCP WebSockets I2P TOR
application Git BitTorrent Bitcoin Ethereum BigchainDB

Blockstack ETH
naming DNS etc Names

Git Object Torrent + Bitcoin RethinkDB


RLP Format
Format bencoding Serialization

Git Repl. BitTorrent Bitcoin RethinkDB


exchange Replication
(sync heads) (Tit for Tat) Gossip

Trackers
routing
MainlineDHT

network HTTP SSH TCP uTP TCP RLPx TLS?


application Git BitTorrent Bitcoin Ethereum BigchainDB

Blockstack ETH
naming DNS etc Names

Git Object Torrent + Bitcoin RethinkDB


RLP Format
Format bencoding Serialization

Git Repl. BitTorrent Bitcoin RethinkDB


exchange Replication
(sync heads) (Tit for Tat) Gossip

Trackers
routing
MainlineDHT

network HTTP SSH TCP uTP TCP RLPx TLS?


application Git BitTorrent Bitcoin Ethereum BigchainDB

Blockstack ETH
naming DNS etc Names

Authenticated Data Structures

Git Repl. BitTorrent Bitcoin RethinkDB


exchange Replication
(sync heads) (Tit for Tat) Gossip

Trackers
routing
MainlineDHT

network HTTP SSH TCP uTP TCP RLPx TLS?


application Git BitTorrent Bitcoin Ethereum BigchainDB

Blockstack ETH
naming DNS etc Names

Hash (Merkle) Linked Data Structures

Git Repl. BitTorrent Bitcoin RethinkDB


exchange Replication
(sync heads) (Tit for Tat) Gossip

Trackers
routing
MainlineDHT

network HTTP SSH TCP uTP TCP RLPx TLS?


application Git BitTorrent Bitcoin Ethereum BigchainDB

Blockstack ETH
naming DNS etc Names

IPLD

Git Repl. BitTorrent Bitcoin RethinkDB


exchange Replication
(sync heads) (Tit for Tat) Gossip

Trackers
routing
MainlineDHT

network HTTP SSH TCP uTP TCP RLPx TLS?

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