Using the daemon command neume creates a JSON RPC server which can be used to consume data. The following RPC methods are supported.
getIdsChanged_fill is a method that returns inserts/updates to the database in the given block range. Also see the "How to consume the indexed data" section.
Let's suppose a new NFT was minted at block number 16572314.
Curl
curl -X POST https://sync1.neume.network/ -H 'Content-Type: application/json' --data '
{
"jsonrpc": "2.0",
"method": "getIdsChanged_fill",
"id": "1",
"params": [
16572314,
16572314
]
}
'The result is a list of NFTs that was inserted or updated at 16572314. In our case, the result contains only one NFT. If other NFTs were also minted or updated in this block we should see them in the result.
id is the ID given to the NFT and value is the NFT itself.
[
{
id: {
chainId: "1",
address: "0xa6c4df945dbb1d71fe9a8d71ae93b8d5c2bbebe4",
tokenId: "6975",
blockNumber: 16572314,
},
value: {
version: "2.0.0",
title: "XYZ",
artist: {
version: "2.0.0",
name: "Snoop Dogg",
address: "0xE0036fb4B5A3B232aCfC01fEc3bD1D787a93da75",
},
platform: {
version: "2.0.0",
name: "Sound Protocol",
uri: "https://sound.xyz",
},
erc721: {
version: "2.0.0",
createdAt: 16563504,
transaction: {
from: "0x59975dFE25845bF9C0eFf1102Ac650599c3f491a",
to: "0x7Dd7fd8ACd39e557A6c570965eeA2b4008c4Dd1c",
blockNumber: 16572314,
transactionHash: "0xa80214bad12482943020cd539c099b45c2acc86373bd28d0173303d6042049c0",
},
address: "0xa6c4df945dbb1d71fe9a8d71ae93b8d5c2bbebe4",
tokenId: "6975",
tokenURI: "ar://T5aZ_6FYBIRnvMX7O6qbE4ZSEnysMlZbHhlnFmUvAMk/0",
metadata: {
animation_url: "ar://_VUsZCeJQWVD4hFcgb5w39GqekARiN8ff-ptw63lH28",
artist: "Snoop Dogg",
artwork: {
mimeType: "image/png",
uri: "ar://gB04RsiCpgEbwxKs-tRh5gsycsUo-tGDdWQIkM51f6U",
nft: null,
},
attributes: [
{
trait_type: "XYZ",
value: "Song Edition",
},
],
bpm: null,
credits: null,
description:
"Music OEs. Buy as many as U want\n\n.00420Ξ (8$)\u0003--> Open 72 Hours \n\nGonna give 1 of my vintage cars from tha compound 2 tha golden egg winner... Only If we hit 42,000 mints\n\nClaimable only in Inglewood California",
duration: 129,
external_url: "https://www.sound.xyz/snoopdogg/xyz",
genre: "Hip-hop & Rap",
image: "ar://gB04RsiCpgEbwxKs-tRh5gsycsUo-tGDdWQIkM51f6U",
isrc: null,
key: null,
license: null,
locationCreated: null,
losslessAudio: "ar://_VUsZCeJQWVD4hFcgb5w39GqekARiN8ff-ptw63lH28",
lyrics: null,
mimeType: "audio/mpeg",
nftSerialNumber: null,
name: "XYZ",
originalReleaseDate: null,
project: null,
publisher: null,
recordLabel: null,
tags: null,
title: "XYZ",
trackNumber: 1,
version: "sound-edition-20220930",
visualizer: null,
},
},
manifestations: [
{
version: "2.0.0",
uri: "ar://_VUsZCeJQWVD4hFcgb5w39GqekARiN8ff-ptw63lH28",
mimetype: "audio",
},
{
version: "2.0.0",
uri: "ar://gB04RsiCpgEbwxKs-tRh5gsycsUo-tGDdWQIkM51f6U",
mimetype: "image",
},
],
},
},
];Let's suppose the previously minted was NFT was transfered at block number 16572315 from 0x7Dd7fd8ACd39e557A6c570965eeA2b4008c4Dd1c to 0x076D520333b2163C51897FAC8939a3606e5b4a95. We will get the following updated NFT as the result.
Curl
curl -X POST https://sync1.neume.network/ -H 'Content-Type: application/json' --data '
{
"jsonrpc": "2.0",
"method": "getIdsChanged_fill",
"id": "1",
"params": [
16572315,
16572315
]
}
'Notice, how the NFT is completely same with the execption of value.erc721.transaction as the NFT was transferred.
[
{
id: {
chainId: "1",
address: "0xa6c4df945dbb1d71fe9a8d71ae93b8d5c2bbebe4",
tokenId: "6975",
blockNumber: 16572314,
},
value: {
version: "2.0.0",
title: "XYZ",
artist: {
version: "2.0.0",
name: "Snoop Dogg",
address: "0xE0036fb4B5A3B232aCfC01fEc3bD1D787a93da75",
},
platform: {
version: "2.0.0",
name: "Sound Protocol",
uri: "https://sound.xyz",
},
erc721: {
version: "2.0.0",
createdAt: 16563504,
/* Note: only the transaction object has changed */
transaction: {
from: "0x7Dd7fd8ACd39e557A6c570965eeA2b4008c4Dd1c",
to: "0x076D520333b2163C51897FAC8939a3606e5b4a95",
blockNumber: 16572315,
transactionHash: "0xA3B232aCfC01fE943020cd539c099b45c2acc86373bd28d0173303d6042049c0",
},
address: "0xa6c4df945dbb1d71fe9a8d71ae93b8d5c2bbebe4",
tokenId: "6975",
tokenURI: "ar://T5aZ_6FYBIRnvMX7O6qbE4ZSEnysMlZbHhlnFmUvAMk/0",
metadata: {
animation_url: "ar://_VUsZCeJQWVD4hFcgb5w39GqekARiN8ff-ptw63lH28",
artist: "Snoop Dogg",
artwork: {
mimeType: "image/png",
uri: "ar://gB04RsiCpgEbwxKs-tRh5gsycsUo-tGDdWQIkM51f6U",
nft: null,
},
attributes: [
{
trait_type: "XYZ",
value: "Song Edition",
},
],
bpm: null,
credits: null,
description:
"Music OEs. Buy as many as U want\n\n.00420Ξ (8$)\u0003--> Open 72 Hours \n\nGonna give 1 of my vintage cars from tha compound 2 tha golden egg winner... Only If we hit 42,000 mints\n\nClaimable only in Inglewood California",
duration: 129,
external_url: "https://www.sound.xyz/snoopdogg/xyz",
genre: "Hip-hop & Rap",
image: "ar://gB04RsiCpgEbwxKs-tRh5gsycsUo-tGDdWQIkM51f6U",
isrc: null,
key: null,
license: null,
locationCreated: null,
losslessAudio: "ar://_VUsZCeJQWVD4hFcgb5w39GqekARiN8ff-ptw63lH28",
lyrics: null,
mimeType: "audio/mpeg",
nftSerialNumber: null,
name: "XYZ",
originalReleaseDate: null,
project: null,
publisher: null,
recordLabel: null,
tags: null,
title: "XYZ",
trackNumber: 1,
version: "sound-edition-20220930",
visualizer: null,
},
},
manifestations: [
{
version: "2.0.0",
uri: "ar://_VUsZCeJQWVD4hFcgb5w39GqekARiN8ff-ptw63lH28",
mimetype: "audio",
},
{
version: "2.0.0",
uri: "ar://gB04RsiCpgEbwxKs-tRh5gsycsUo-tGDdWQIkM51f6U",
mimetype: "image",
},
],
},
},
];neume maintains a list of contracts that need to be crawled. Some of these contracts are hardcoded and others are found from on-chain data. getUserContracts returns the list of contracts found from on-chain data. This function is not required to consume indexed data. It is currently used for the sync feature.
The schema for the JSON RPC server can be found at /commands/daemon/daemon-jsonrpc-schema.js.