Bitcoin Wiki - User contributions [en]

File:List malleability example.png

2020-02-19T11:58:39Z

Jack Davies:

File:List malleability.png

2020-02-19T11:54:07Z

Jack Davies:

File:Script malleability example.png

2020-02-19T11:41:21Z

Jack Davies:

File:Script malleability.png

2020-02-19T11:33:30Z

Jack Davies:

The Metanet

2020-02-19T10:20:13Z

Jack Davies:

[[File:post.png|thumb|The Metanet Ecosystem]]
'''The Metanet''' is the term given to a value-based internet built on the Bitcoin SV blockchain. The Metanet can be used to refer to either of:

* The concept of value-based internet built on [[Main_Page|Bitcoin SV]].
* The [[Metanet_Protocol|Metanet Protocol]].

The Metanet was first announced as a concept by Dr. Craig Wright at the [https://www.youtube.com/watch?v=MXpHHZqe6vI CoinGeek Week] conference in London on November 30th 2018.

The motivation for the Metanet is the creation of an on-chain internet that functions as an efficient value network, which has improved properties and [[The_Metanet#Capabilities|capabilities]] compared to the existing infrastructure of the Internet. The Metanet as a concept has since been widely adopted by the Bitcoin SV ecosystem and many protocols and applications have been built to implement the vision of a highly-connected blockchain-based internet for peer-to-peer content creation and monetization.

==Core Principles==

The motivations for the Metanet are linked to well-known problems with the existing Internet and e-commerce, which include the following:

* Reliance on intermediaries for payments.
* Lack of a granular micropayment layer.
* Walled-garden applications and data silos.
* Concerns over data privacy and ownership for users.
* Prevalence of spam, trolling and bots in online social platforms.

The first two issues, relating to payment intermediaries and lack of micropayments, are addressed by the use of the Bitcoin SV blockchain for simple payments. The Metanet aims to solve the remaining issues by combining online payments with immutable data stored on the public Bitcoin SV blockchain.

The combination of payments and data both using the Bitcoin SV blockchain as a universal source of truth theoretically allow for a more equitable internet ecosystem in which:

* Information is attributed value.
* Quality is incentivised over quantity.
* The cost of dishonest behaviour (e.g. trolling) is increased.
* Users own their data.

==The Metanet Protocol==
[[File:Metanet_DAG.png|thumb|The Metanet Protocol]]

The [[Metanet_Protocol|Metanet protocol]] is a protocol for structuring data within the on-chain internet architecture of the Metanet. The Metanet protocol uses a graph data model to create on-chain data structures for Metanet applications, websites and use cases. The protocol allows users to store, distribute and monetize their data using its native permissioning framework.

The Metanet protocol is a graph-based data structure protocol. The protocol uses the native directed acyclic graph (DAG) data model of the underlying Bitcoin SV blockchain to create overlay DAG structures that exist natively on-chain.

==Capabilities==
The Metanet is widely attributed with the following capabilities:

* Facilitation of micropayments.
* Higher cost to spam, trolling and bot accounts.
* Efficient commerce.
* Users able to own their data.
* Easier monetization for content creators.

Metanet Protocol

2020-02-19T09:36:31Z

Jack Davies:

[[File:Metanet_graph.png|thumb|A typical Metanet graph.]]

The '''Metanet Protocol''' is a layer-2 overlay protocol that defines a method for creating data structure over Bitcoin SV. The protocol utilises [[Metanet_Protocol#Node and Edge Structure|nodes and edges]] to specify graph data structures created on the Bitcoin SV blockchain. The protocol can be used to create directed acyclic graph (DAG) structures on the blockchain that store data such that the storage represents a hierarchical structure of the data. The Metanet protocol can be used to replicate file systems, ownership structure and code repositories on the blockchain for any type of data.

There are a number of tools in the Bitcoin SV ecosystem that enable users to [[Metanet_Protocol#Writing Metanet Graphs|write]] and [[Metanet_Protocol#Reading Metanet Graphs|read]] Metanet graphs for building applications using the blockchain. A number of [[Metanet_Protocol#Usage|projects]] using built on Bitcoin SV are currently using the Metanet protocol to structure their application data.

==Node and Edge Structure==

The Metanet Protocol is a protocol for creating graph structures comprising nodes and edges on the blockchain. In the Metanet protocol the following definitions of node and edge are used:

* '''Metanet Node''' - A transaction using the Metanet protocol format.
* '''Metanet Edge''' - An input signature linking two Metanet nodes.

A Metanet node is a transaction that conforms to the Metanet transaction format specified in [https://nchain.com/app/uploads/2019/06/The-Metanet-Technical-Summary-v1.0.pdf Metanet technical summary] document produced by nChain. The basic components of a Metanet transaction include a protocol flag, Metanet-specific data attributes, and any content data that is to be stored by a Metanet node transaction.

The protocol flag is a 4-byte hexadecimal prefix that signifies that a transaction is using the format of the Metanet protocol. The hexadecimal value of the prefix was chosen to be the hexademical encoding 0x4d455441 of the string 'meta' by [https://twitter.com/BitcoinAssn/status/1136232235798016001?s=20 public poll] on June 5th 2019.

The Metanet-specific data attributes of a Metanet node transaction include the following:

* '''<math>P_{node}</math>''' - the public key defining the node.
* '''<math>TxID_{node}</math>''' - the unique transaction ID of the node.
* '''<math>P_{parent}</math>''' - the public key defining a parent of the node.
* '''<math>SigP_{parent}</math>''' - a signature created using the private key associated with the public key defining a parent of the node.
* '''<math>TxID_{parent}</math>''' - the unique transaction ID of the a parent of the node.

The Metanet-specific data attributes listed above are used collectively to define a Metanet node and its position within a larger graph structure of multiple Metanet nodes, known as a ''Metanet graph''.

It is possible that a node does not have any parents and such a node is termed a ''root node''. A root node will have null values for any <math>P_{parent}</math>, <math>SigP_{parent}</math>, and <math>TxID_{parent}</math> attributes, and can therefore use a valid signature from any public key in its input(s).

A Metanet transaction is defined as a transaction that contains an OP_FALSE OP_RETURN payload containing:

* The Metanet flag
[[File:Metanet_node.png|thumb|A Metanet node transaction.]]
* A node public key '''<math>P_{node}</math>'''
* A parent transaction ID '''<math>TxID_{parent}</math>''' (null if a root node).

In order to qualify as a Metanet-valid node, the transaction must also be signed by the public key corresponding to its parent '''<math>P_{parent}</math>'''.

Any content data and its encoding can be included following these core Metanet attributes in the OP_FALSE OP_RETURN payload. The Metanet protocol does not specify the use of any one scheme for content data and additional attributes, and any valud usage of the Metanet protocol attributes above constitute a Metanet node transaction.

A basic example of a Metanet node transaction that conforms to this format is shown in the diagram on the right.

The Metanet graph is formed by creating edges between parent Metanet nodes and child Metanet nodes. An edge is created between a parent and child by the creation and insertion of the signature '''<math>SigP_{parent}</math>''' in the child node, using the parent public key. [[File:Metanet_edge.png|thumb|The creation of a Metanet edge.]]

The fact that the appearance of this signature is in a transaction input means that the signature itself is validated by miners. This means that only valid Metanet child nodes can appear on the blockchain, and any spoofing attempts will be considered invalid.

== Rules of the Metanet Protocol==

The Metanet protocol specifies a simple and extensible rule set for creating Metanet graphs and data structures. The base rule set is the following:

* Nodes are transactions.
* Edges are created by signatures.
* Each node is uniquely identified by the pair of attributes: '''<math>P_{node}</math>''', '''<math>TxID_{node}</math>'''.
* Each node must specify the node ID of itself and its parent: '''<math>ID_{node}</math>''', '''<math>ID_{parent}</math>'''.

The unique node identifier for a node is defined mathematically as '''<math>H(P_{node}||TxID_{node})</math>''', where '''<math>H()</math>''' is a cryptographic hash function.

Metanet graph structures may be created using this base rule set alone. It is also possible to impose additional rules to Metanet graph structures in order to achieve different properties for data structures.

A simple extension of the rule set is to impose the following constraints:
[[File:Metanet_rules.png|thumb|A simple Metanet rule set.]]

* The in-degree of a node should be 0 (no parent) or 1 (one parent).
* The out-degree of a node should be a free parameter.

These additional rules allow domain-like structures to emerge as Metanet DAGs, which can be used to structure websites and file systems which inherit the permissioning structure of a Metanet graph.

The Metanet

2020-02-19T09:36:26Z

Jack Davies:

[[File:post.png|thumb|The Metanet Ecosystem]]
'''The Metanet''' is the term given to a value-based internet built on the Bitcoin SV blockchain. The Metanet can be used to refer to either of:

* The concept of value-based internet built on [[Main_Page|Bitcoin SV]].
* The [[Metanet_Protocol|Metanet Protocol]].

The Metanet was first announced as a concept by Dr. Craig Wright at the [https://www.youtube.com/watch?v=MXpHHZqe6vI CoinGeek Week] conference in London on November 30th 2018.

The motivation for the Metanet is the creation of an on-chain internet that functions as an efficient value network, which has improved properties and [[The_Metanet#Capabilities|capabilities]] compared to the existing infrastructure of the Internet. The Metanet as a concept has since been widely adopted by the Bitcoin SV ecosystem and many protocols and applications have been built to implement the vision of a highly-connected blockchain-based internet for peer-to-peer content creation and monetization.

==Core Principles==

The motivations for the Metanet are linked to well-known problems with the existing Internet and e-commerce, which include the following:

* Reliance on intermediaries for payments.
* Lack of a granular micropayment layer.
* Walled-garden applications and data silos.
* Concerns over data privacy and ownership for users.
* Prevalence of spam, trolling and bots in online social platforms.

The first two issues, relating to payment intermediaries and lack of micropayments, are addressed by the use of the Bitcoin SV blockchain for simple payments. The Metanet aims to solve the remaining issues by combining online payments with immutable data stored on the public Bitcoin SV blockchain.

The combination of payments and data both using the Bitcoin SV blockchain as a universal source of truth theoretically allow for a more equitable internet ecosystem in which:

* Information is attributed value.
* Quality is incentivised over quantity.
* The cost of dishonest behaviour (e.g. trolling) is increased.
* Users own their data.

==The Metanet Protocol==
[[File:Metanet_DAG.png|thumb|The Metanet Protocol]]

The [[Metanet_Protocol|Metanet protocol]] is a protocol for structuring data within the on-chain internet architecture of the Metanet. The Metanet protocol uses a graph data model to create on-chain data structures for Metanet applications, websites and use cases. The protocol allows users to store, distribute and monetize their data using its native permissioning framework.

The Metanet protocol is a graph-based data structure protocol. The protocol uses the native [[Directed_Acyclic_Graph|directed acyclic graph (DAG)]] data model of the underlying Bitcoin SV blockchain to create overlay DAG structures that exist natively on-chain.

==Capabilities==
The Metanet is widely attributed with the following capabilities:

* Facilitation of micropayments.
* Higher cost to spam, trolling and bot accounts.
* Efficient commerce.
* Users able to own their data.
* Easier monetization for content creators.

File:Metanet rules.png

2020-02-19T09:34:41Z

Jack Davies:

File:Metanet edge.png

2020-02-19T09:23:43Z

Jack Davies:

The Metanet

2020-01-21T15:22:57Z

Jack Davies:

[[File:post.png|thumb|The Metanet Ecosystem]]
'''The Metanet''' is the term given to a value-based internet built on the Bitcoin SV blockchain. The Metanet can be used to refer to either of:

* The concept of value-based internet built on [[Main_Page|Bitcoin SV]].
* The [[Metanet_Protocol|Metanet Protocol]].

The Metanet was first announced as a concept by Dr. Craig Wright at the [https://www.youtube.com/watch?v=MXpHHZqe6vI CoinGeek Week] conference in London on November 30th 2018.

The motivation for the Metanet is the creation of an on-chain internet that functions as an efficient value network, which has improved properties and [[The_Metanet#Capabilities|capabilities]] compared to the existing infrastructure of the Internet. The Metanet as a concept has since been widely adopted by the Bitcoin SV ecosystem and many protocols and applications have been built to implement the vision of a highly-connected blockchain-based internet for peer-to-peer content creation and monetization.

==Core Principles==

The motivations for the Metanet are linked to well-known problems with the existing Internet and e-commerce, which include the following:

* Reliance on intermediaries for payments.
* Lack of a granular micropayment layer.
* Walled-garden applications and data silos.
* Concerns over data privacy and ownership for users.
* Prevalence of spam, trolling and bots in online social platforms.

The first two issues, relating to payment intermediaries and lack of micropayments, are addressed by the use of the Bitcoin SV blockchain for simple payments. The Metanet aims to solve the remaining issues by combining online payments with immutable data stored on the public Bitcoin SV blockchain.

The combination of payments and data both using the Bitcoin SV blockchain as a universal source of truth theoretically allow for a more equitable internet ecosystem in which:

* Information is attributed value.
* Quality is incentivised over quantity.
* The cost of dishonest behaviour (e.g. trolling) is increased.
* Users own their data.

==The Metanet Protocol==
[[File:Metanet_DAG.png|thumb|The Metanet Protocol]]

The [[Metanet_Protocol|Metanet protocol]] is a protocol for structuring data within the on-chain internet architecture of the Metanet. The Metanet protocol uses a graph data model to create on-chain data structures for Metanet applications, websites and use cases. The protocol allows users to store, distribute and monetize their data using its native permissioning framework.

The Metanet protocol is a graph-based data structure protocol. The protocol uses the native [[Directed_Acyclic_Graph|directed acyclic graph (DAG)]] data model of the underlying Bitcoin SV blockchain to create overlay DAG structures that exist natively on-chain.

==Capabilities==
The Metanet is widely attributed with the following capabilities:

* Facilitation of micropayments.
* Higher cost to spam, trolling and bot accounts.
* Efficient commerce.
* Users able to own their data.
* Easier monetization for content creators.
* Incentivises higher quality of content than

The Metanet

2020-01-21T15:21:29Z

Jack Davies:

[[File:post.png|thumb|The Metanet Ecosystem]]
'''The Metanet''' is the term given to a value-based internet built on the Bitcoin SV blockchain. The Metanet can be used to refer to either of:

* The concept of value-based internet built on Bitcoin SV.
* The [[Metanet_Protocol|Metanet Protocol]].

The Metanet was first announced as a concept by Dr. Craig Wright at the [https://www.youtube.com/watch?v=MXpHHZqe6vI CoinGeek Week] conference in London on November 30th 2018.

The motivation for the Metanet is the creation of an on-chain internet that functions as an efficient value network, which has improved properties and [[The_Metanet#Capabilities|capabilities]] compared to the existing infrastructure of the Internet. The Metanet as a concept has since been widely adopted by the Bitcoin SV ecosystem and many protocols and applications have been built to implement the vision of a highly-connected blockchain-based internet for peer-to-peer content creation and monetization.

==Core Principles==

The motivations for the Metanet are linked to well-known problems with the existing Internet and e-commerce, which include the following:

* Reliance on intermediaries for payments.
* Lack of a granular micropayment layer.
* Walled-garden applications and data silos.
* Concerns over data privacy and ownership for users.
* Prevalence of spam, trolling and bots in online social platforms.

The first two issues, relating to payment intermediaries and lack of micropayments, are addressed by the use of the Bitcoin SV blockchain for simple payments. The Metanet aims to solve the remaining issues by combining online payments with immutable data stored on the public Bitcoin SV blockchain.

The combination of payments and data both using the Bitcoin SV blockchain as a universal source of truth theoretically allow for a more equitable internet ecosystem in which:

* Information is attributed value.
* Quality is incentivised over quantity.
* The cost of dishonest behaviour (e.g. trolling) is increased.
* Users own their data.

==The Metanet Protocol==
[[File:Metanet_DAG.png|thumb|The Metanet Protocol]]

The [[Metanet_Protocol|Metanet protocol]] is a protocol for structuring data within the on-chain internet architecture of the Metanet. The Metanet protocol uses a graph data model to create on-chain data structures for Metanet applications, websites and use cases. The protocol allows users to store, distribute and monetize their data using its native permissioning framework.

The Metanet protocol is a graph-based data structure protocol. The protocol uses the native [[Directed_Acyclic_Graph|directed acyclic graph (DAG)]] data model of the underlying Bitcoin SV blockchain to create overlay DAG structures that exist natively on-chain.

==Capabilities==
The Metanet is widely attributed with the following capabilities:

* Facilitation of micropayments.
* Higher cost to spam, trolling and bot accounts.
* Efficient commerce.
* Users able to own their data.
* Easier monetization for content creators.
* Incentivises higher quality of content than

File:Metanet DAG.png

2020-01-21T15:13:31Z

Jack Davies:

File:Metanet node.png

2020-01-21T14:01:30Z

Jack Davies:

File:Metanet graph.png

2020-01-21T13:56:01Z

Jack Davies:

File:Post.png

2020-01-21T12:21:14Z

Jack Davies: