The document discusses module management and the InterPlanetary File System (IPFS). It covers topics like how modules are currently managed through tools like npm, and some of the limitations of existing systems. It then introduces IPFS as a new protocol that could be used to upgrade the web by allowing modules and other content to be permanently stored, distributed and accessed in a decentralized manner. Key components of IPFS discussed include its use of content addressing, distributed hash tables, the merkle dag data structure, IPNS for mutable naming, and how these pieces could provide benefits like discovery, integrity, transport and updating of modules in a more robust way compared to existing systems.

1. Stellar Module
Management
David Dias, Protocol Labs

3. Stellar Module Management
Package
Repo
Tarball
Container

5. • Module Management
• npm
• The Web
• IPFS, the InterPlanetary Filesystem

6. • Module Management
• npm
• The Web
• IPFS, the InterPlanetary Filesystem
• 🌠

8. Modules Management

9. • What interfaces are available
• Language biased
• Reusable code, library or
project all together
Scope

10. • Share it
• Make a webpage for the project
• Register it in a public listing
Discover a module

11. • Use a tool
• Download from a webpage
• Sneaker net
• Email
Transport

12. • How to deal with constant new
• Notify users
• Avoid breaking compatibility
• Cope with demand
• Security patches
Update

13. • How to store these modules
• Storage space and bandwidth concerns
Structure

14. • Check what I’m running
Integrity

15. • Who owns it
• Who is allowed to change it
• Where can it run
• Where can it be accessible
Ownership

16. • Scope
• Discovery
• Transport
• Update
• Activity
• Structure
• Integrity
• Ownership

19. • Storage is cheap
• Bandwidth is virtually “free”

26. Location Addressing

27. http://10.20.30.40/foo/bar/baz.png
location path
http://example.com/foo/bar/baz.png

28. http://10.20.30.40/foo/bar/baz.png
you

29. http://10.20.30.40/foo/bar/baz.png
10.20.30.40
you

30. http://10.20.30.40/foo/bar/baz.png
10.20.30.40
you

36. Permanence Security
IoT
Control
Offline
Bandwidth
Disconnected

37. a protocol to upgrade the web

38. Permanent
Distributed Safer
Smarter
Offline
Faster

39. SFS
web
DHT+

40. web
DHT
SFS
routing
network
exchange
merkledag
naming
applications
The Stack

41. routing
network
exchange
merkledag
naming
applicationsThe Stack
Defining the Data
Moving the Data
Using the Data
IPLD - IP Linked Data
libp2p
IPNS - IP Naming System

42. {
name: ‘martian’
…
}
{
user: ???
}

43. {
name: ‘martian’
…
}
{
user: ???
}
hash( ) -> KQsXSobGtbNhF

44. {
name: ‘martian’
age: 9001
…
}
{
user: KQsXSobGtbNhF
…
}
hash( ) -> KQsXSobGtbNhF
MERKLE LINK

51. cvs/svn

52. cvs/svn

53. cvs/svn

59. MerkleDAG
in IPFS
data forms a dag
it’s called the merkle dag
because the links are hashes

60. blob, tree, commit
unix files
and dirs
any data structures are
represented as dags
blocks, txns, wallets
kv-stores

61. http://10.20.30.40/foo/bar/baz.png
location path
http://example.com/foo/bar/baz.png

62. http://10.20.30.40/foo/bar/baz.png
location path
http://example.com/foo/bar/baz.png
/ipns/example.com/foo/bar/baz.png
/ipfs/QmW98pJrc6FZ6/foo/bar/baz.png
content path

63. 10.20.30.40
you
HTTP
http://10.20.30.40/foo/bar/baz.png
/ipfs/QmW98pJrc6FZ6/foo/bar/baz.png

64. http://10.20.30.40/foo/bar/baz.png
10.20.30.40
you
/ipfs/QmW98pJrc6FZ6/foo/bar/baz.png
IPFS

65. /ipns/example.com/foo/bar/baz.png
/ipfs/QmW98pJrc6FZ6/foo/bar/baz.png
content path
MUTABILITY
IPNS - InterPlanetary Naming System

66. /ipns/QmYJPtosPTfoC/foo/bar/baz.png
/ipfs/QmW98pJrc6FZ6/foo/bar/baz.png
content path
/ipns/example.com/foo/bar/baz.png
IPNS - InterPlanetary Naming System
MUTABILITY

67. /ipns/QmYJPtosPTfoC/foo/bar/baz.png
/ipfs/QmW98pJrc6FZ6/foo/bar/baz.png
QmW98pJrc6FZ6

68. /ipns/QmYJPtosPTfoC/foo/bar/baz.png
/ipfs/QmW98pJrc6FZ6/foo/bar/baz.png
QmYJPtosPTfoC
public
key
secret
key
QmW98pJrc6FZ6

69. public
key
QmW98pJrc6FZ6
secret
key
/ipns/QmYJPtosPTfoC/foo/bar/baz.png
/ipfs/QmW98pJrc6FZ6/foo/bar/baz.png
QmYJPtosPTfoC
QmW98pJrc6FZ6

70. public
key
QmW98pJrc6FZ6
secret
key
/ipns/QmYJPtosPTfoC/foo/bar/baz.png
/ipfs/QmW98pJrc6FZ6/foo/bar/baz.png
QmYJPtosPTfoC
signed by
QmYJPtosPTfoC
QmW98pJrc6FZ6

71. public
key
QmW98pJrc6FZ6
secret
key
/ipns/QmYJPtosPTfoC/foo/bar/baz.png
/ipfs/QmW98pJrc6FZ6/foo/bar/baz.png
QmYJPtosPTfoC
signed by
QmYJPtosPTfoC
QmW98pJrc6FZ6

72. DHT - Distributed Hash Table

73. DHT are the Holy Grail of P2P Networks

74. 1
5
6
10
50
55

75. 1 10 12 20 30 50 54 58 70 88 81 83 88 90 92 95 97 99 101105 300411 500

76. 1 10 12 20 30 50 54 58 70 88 81 83 88 90 92 95 97 99 101105 300411 500

77. 1 10 12 20 30 50 54 58 70 88 81 83 88 90 92 95 97 99 101105 300411 500
hash( ) = 91

78. 1 10 12 20 30 50 54 58 70 88 81 83 88 90 92 95 97 99 101105 300411 500
hash( ) = 91

79. 1 10 12 20 30 50 54 58 70 88 81 83 88 90 92 95 97 99 101105 300411 500
Who has fim , which hash( ) = 91?

80. What you get
✓ Discovery (through IPNS)
✓ Integrity (through
cryptographic hashing)
✓ Activity (the more
downloads, the merrier)
✓ Structure (download things
at most once)
✓ Transport (stream from
every peer that has the
module)
✓ Update (just sync the parts
that are changed)
✓ Ownership (private clusters,
IPNS records signed,

82. registry-mirror
npm i <insert-module-name> –-registry=<IPFS bridge>

83. registry-mirror
demo

85. LXJS 2013 - http://yearbook.lxjs.org

87. Thank you!
David Dias - http://daviddias.me IPFS http://ipfs.io Protocol Labs http://ipn.io