178 lines
4.2 KiB
Markdown
178 lines
4.2 KiB
Markdown
# Schema
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## [Claim](https://github.com/lbryio/lbryschema/blob/master/lbryschema/proto/claim.proto)
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A `Claim` is the toplevel schema for everything that is published to the LBRY blockchain.
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```protobuf
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message Claim {
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enum Version {
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UNKNOWN_VERSION = 0;
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_0_0_1 = 1;
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}
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required Version version = 1;
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enum ClaimType {
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UNKNOWN_CLAIM_TYPE = 0;
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streamType = 1;
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certificateType = 2;
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}
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required ClaimType claimType = 2;
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optional Stream stream = 3;
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optional Certificate certificate = 4;
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optional Signature publisherSignature = 5;
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}
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```
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## Content
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### [Stream](https://github.com/lbryio/lbryschema/blob/master/lbryschema/proto/stream.proto)
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All content claims have a Stream field, which includes the content-specific information (e.g. a description of the content, instructions for downloading the content, etc).
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```protobuf
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message Stream {
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enum Version {
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UNKNOWN_VERSION = 0;
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_0_0_1 = 1;
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}
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required Version version = 1;
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required Metadata metadata = 2;
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required Source source = 3;
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}
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```
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### [Metadata](https://github.com/lbryio/lbryschema/blob/master/lbryschema/proto/metadata.proto)
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`Metadata` provides information about a piece of content, such as the title, description, and price.
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```protobuf
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message Metadata {
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enum Version {
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UNKNOWN_VERSION = 0;
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_0_0_1 = 1;
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_0_0_2 = 2;
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_0_0_3 = 3;
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_0_1_0 = 4;
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}
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required Version version = 1;
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enum Language {
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UNKNOWN_LANGUAGE = 0;
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en = 1;
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}
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required Language language = 2;
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required string title = 3;
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required string description = 4;
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required string author = 5;
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required string license = 6;
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required bool nsfw = 7;
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optional Fee fee = 8;
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optional string thumbnail = 9;
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optional string preview = 10;
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optional string licenseUrl = 11;
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}
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```
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### [Fee](https://github.com/lbryio/lbryschema/blob/master/lbryschema/proto/fee.proto)
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A `Fee` defines the prices for accessing a piece of content.
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```protobuf
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message Fee {
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enum Version {
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UNKNOWN_VERSION = 0;
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_0_0_1 = 1;
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}
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required Version version = 1;
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enum Currency {
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UNKNOWN_CURRENCY = 0;
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LBC = 1;
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BTC = 2;
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USD = 3;
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}
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required Currency currency = 2;
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required bytes address = 3;
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required float amount = 4;
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}
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```
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### [Source](https://github.com/lbryio/lbryschema/blob/master/lbryschema/proto/source.proto)
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A `Source` contains information on how to download a stream. Only the LBRY data network is supported at the moment, but other sources may be added in the future.
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```protobuf
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message Source {
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enum Version {
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UNKNOWN_VERSION = 0;
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_0_0_1 = 1;
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}
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required Version version = 1;
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enum SourceTypes {
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UNKNOWN_SOURCE_TYPE = 0;
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lbry_sd_hash = 1;
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}
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required SourceTypes sourceType = 2;
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required bytes source = 3;
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required string contentType = 4;
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}
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```
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## Channels
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Channels are the identity mechanism in LBRY. They are constructed out of Certificates and Signatures. Both utilize a KeyType:
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```protobuf
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enum KeyType {
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UNKNOWN_PUBLIC_KEY_TYPE = 0;
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NIST256p = 1;
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NIST384p = 2;
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SECP256k1 = 3;
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}
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```
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### [Certificate](https://github.com/lbryio/lbryschema/blob/master/lbryschema/proto/certificate.proto)
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Creating a channel involves making a `certificateType` claim. This claim contains the public key for a channel. It must include a Certificate field:
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```protobuf
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message Certificate {
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enum Version {
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UNKNOWN_VERSION = 0;
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_0_0_1 = 1;
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}
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required Version version = 1;
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required KeyType keyType = 2;
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required bytes publicKey = 4;
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}
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```
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### [Signature](https://github.com/lbryio/lbryschema/blob/master/lbryschema/proto/signature.proto)
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Publishing a claim to a channels simply means that the claim is signed using the private key for a channel. This is done by including a Signature field in a Claim:
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```protobuf
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message Signature {
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enum Version {
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UNKNOWN_VERSION = 0;
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_0_0_1 = 1;
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}
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required Version version = 1;
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required KeyType signatureType = 2;
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required bytes signature = 3;
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required bytes certificateId = 4;
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}
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```
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