Para desarrolladores / Activos del mundo real
Activos del mundo real
La capa es una capa de precios. 33 feeds, 19 de ellos activos del mundo real, publicados dentro del protocolo y legibles con una sola llamada. Esta página explica cómo obtener la lista; la siguiente, cómo leer un precio.
Qué existe
La documentación en lenguaje claro describe tres capas. Exactamente una de ellas tiene código en este repositorio, y esta referencia documenta esa.
| Capa | Estado |
|---|---|
| A price, published in the protocol | built, and documented here33 feeds written by block production into a registry predeploy, with one Chainlink-shaped adapter per feed |
| Exposure to a priced asset | designed, not present in this repositorya margin system denominated by a feed, with crypto collateral and crypto settlement. There is no contract to call |
| A registry admitting third-party tokenised assets as collateral | designed, not present in this repositorywith risk parameters and haircuts. Pickle would admit such a token, not issue one |
Así que: hay precios, y hay contratos que los guardan y los sirven. No hay motor de margen, ni registro de colateral, ni contrato de posición al que llamar. Cuando existan, se documentarán aquí como superficies de llamada, no como intenciones.
Un precio, no el activo
A feed is the PRICE of a real-world asset. It is not the asset.
The chain publishes a number describing what something trades at somewhere else. It issues no tokenised share, holds no underlying instrument, offers no redemption and keeps no custody. Exposure measured against one of these prices is a claim on a margin system, not on an issuer, and this reference does not call it a tokenised asset. Nothing about a feed confers a shareholder right, and there is nothing to redeem.
Name it accordingly in your own interface. A contract reading XAU/USD is reading the price of gold; it is not holding gold, and a user who reads otherwise has been told something untrue.
Esto es una afirmación sobre lo que hace la cadena, no una cláusula de descargo atornillada encima. Nada en el registro referencia a un emisor, un custodio o una reserva, porque no hay ninguno: Pickle no emite ningún activo del mundo real y no tiene ninguno. Un feed llamado AAPL/USD es un número que describe a cuánto se negocia esa acción en un mercado de otro lugar, publicado en esta cadena y nada más.
Obtener la lista de activos
Tres vías, y la primera es casi siempre la correcta. No necesita ABI, ni dirección, ni clave.
| Vía | Llamada |
|---|---|
| Over JSON-RPC | pickle_pricesno params. Answers the whole registry: every feed with its symbol, feedId, adapter, decimals, class, policy, latest answer and age. One call, no ABI, no address |
| From a contract | feedCount() then feeds(offset, limit)on the price registry. limit is capped at 256; an offset past the end returns an empty array rather than reverting, so a reader can page blindly |
| From the source | oracle/catalog.jsonthe live feed set in the repository: what the oracle service prints and what l2-feeds-init (scripts/sync-feeds.sh) reconciles the registry to. The authority for what the chain should hold after a sync, not proof of what it holds now |
| The genesis input | oracle/catalog-genesis.jsonthe frozen copy the genesis allocation was generated from, and the authority for what the chain was born with. It is never edited on its own: a change to it is a genesis regeneration, a new chain |
# Every feed the chain carries, with its adapter, decimals, answer and age.
curl -s $RPC_URL \
-H 'content-type: application/json' \
-d '{"jsonrpc":"2.0","id":1,"method":"pickle_prices","params":[]}' \
| jq '.result.feeds[] | {symbol, feedId, adapter, decimals, price, statusName, staleOnchain}'
# The count alone, when you only want to know whether the catalog changed.
curl -s $RPC_URL \
-H 'content-type: application/json' \
-d '{"jsonrpc":"2.0","id":1,"method":"pickle_prices","params":[]}' \
| jq '.result.feeds | length'$RPC_URL es el punto de acceso de los parámetros de red. La respuesta lleva también blockNumber, timestamp, y el publisher y el owner que nombra el registro - léalos si quiere saber quién pudo haber escrito lo que acaba de leer.
El conjunto de génesis de abajo es aquel con el que nació la cadena. Después se pueden añadir feeds desde el rol propietario, así que un cliente que fije la lista en el código se los perderá. Pagine el registro o llame a pickle_prices y trabaje a partir de la respuesta.
Los 33 feeds
| Clase de activo | Cantidad |
|---|---|
| crypto | 14 feedsclass 1. ETH, BTC, SOL, XRP, DOGE, LINK, ADA, XLM, BCH, TRX, BNB, HYPE, ZEC, XMR - all quoted in USD |
| equity | 9 feedsclass 2. AAPL, MSFT, NVDA, AMZN, GOOGL, META, TSLA, SPY, JPM |
| commodity | 2 feedsclass 3. XAU/USD and XAG/USD - gold and silver |
| fx | 5 feedsclass 4. EUR/USD, GBP/USD, USD/JPY, USD/CHF, USD/CNH |
| index | 3 feedsclass 5. PYTHOIL/USD, BRENT/USD, NATGAS/USD - energy indices, which trade around the clock |
19 de los 33 son activos del mundo real. La separación que cuenta en la práctica es otra: 13 feeds se respaldan en mercados spot y 20 vienen solo de Pyth - es decir, todos los feeds del mundo real más XMR/USD, el único par cripto sin pata de mercado.
| Símbolo | Clase | Fuentes | Política de publicación | Mercado |
|---|---|---|---|---|
| ETH/USD | cripto | 5 mercados + Pyth | everyBlock | siempre abierto |
| BTC/USD | cripto | 5 mercados + Pyth | everyBlock | siempre abierto |
| SOL/USD | cripto | 5 mercados + Pyth | everyBlock | siempre abierto |
| XRP/USD | cripto | 5 mercados + Pyth | everyBlock | siempre abierto |
| DOGE/USD | cripto | 5 mercados + Pyth | everyBlock | siempre abierto |
| LINK/USD | cripto | 5 mercados + Pyth | everyBlock | siempre abierto |
| ADA/USD | cripto | 5 mercados + Pyth | 10 bps / 60 s | siempre abierto |
| XLM/USD | cripto | 5 mercados + Pyth | 10 bps / 60 s | siempre abierto |
| BCH/USD | cripto | 5 mercados + Pyth | 10 bps / 60 s | siempre abierto |
| TRX/USD | cripto | 5 mercados + Pyth | 10 bps / 60 s | siempre abierto |
| BNB/USD | cripto | 5 mercados + Pyth | everyBlock | siempre abierto |
| HYPE/USD | cripto | 5 mercados + Pyth | everyBlock | siempre abierto |
| ZEC/USD | cripto | 5 mercados + Pyth | 10 bps / 60 s | siempre abierto |
| XMR/USD | cripto | solo Pyth | 10 bps / 60 s | siempre abierto |
| AAPL/USD | acciones | solo Pyth | everyBlock | horario del NYSE |
| MSFT/USD | acciones | solo Pyth | 10 bps / 300 s | horario del NYSE |
| NVDA/USD | acciones | solo Pyth | everyBlock | horario del NYSE |
| AMZN/USD | acciones | solo Pyth | everyBlock | horario del NYSE |
| GOOGL/USD | acciones | solo Pyth | 10 bps / 300 s | horario del NYSE |
| META/USD | acciones | solo Pyth | everyBlock | horario del NYSE |
| TSLA/USD | acciones | solo Pyth | everyBlock | horario del NYSE |
| SPY/USD | acciones | solo Pyth | 10 bps / 300 s | horario del NYSE |
| JPM/USD | acciones | solo Pyth | 10 bps / 300 s | horario del NYSE |
| XAU/USD | materias primas | solo Pyth | everyBlock | sesión con pausa diaria |
| XAG/USD | materias primas | solo Pyth | 5 bps / 300 s | sesión con pausa diaria |
| PYTHOIL/USD | índice | solo Pyth | 10 bps / 300 s | siempre abierto |
| BRENT/USD | índice | solo Pyth | 10 bps / 300 s | siempre abierto |
| NATGAS/USD | índice | solo Pyth | 10 bps / 300 s | siempre abierto |
| EUR/USD | divisas | solo Pyth | 2 bps / 300 s | semana de divisas |
| GBP/USD | divisas | solo Pyth | 2 bps / 300 s | semana de divisas |
| USD/JPY | divisas | solo Pyth | 2 bps / 300 s | semana de divisas |
| USD/CHF | divisas | solo Pyth | 2 bps / 300 s | semana de divisas |
| USD/CNH | divisas | solo Pyth | 2 bps / 300 s | sesión con pausa diaria |
- 5 mercados + Pyth. five spot venues, with a Pyth feed alongside as a cross-check and a stand-in
- Solo Pyth. Pyth only - no venue is listed for this feed, so an absent Pyth credential leaves it unpublished
Columna Mercado: siempre abierto - open every day, all day; horario del NYSE - 09:30-16:00 New York, Monday to Friday, with the exchange holiday list; semana de divisas - continuous Monday to Friday afternoon New York, closed Saturday, reopening Sunday evening; sesión con pausa diaria - a nearly-continuous session with a daily break and a closed Saturday. Los calendarios son el asunto de los horarios de mercado, y atenderlos no es opcional.
Cinco políticas de publicación, no treinta y tres
| Política | Feeds |
|---|---|
| everyBlock, no step cap | ETH/USD, BTC/USD, SOL/USD, XRP/USD, DOGE/USD, LINK/USD, BNB/USD, HYPE/USDwritten on every EVM block the publisher can fill. No deviation trigger, no heartbeat, no step cap - the whole crypto class carries a step cap of 0 whether or not it is on this policy. Ring capacity 16,384 for ETH/USD and BTC/USD, 1,024 for the other six |
| everyBlock, with step cap | AAPL/USD, NVDA/USD, AMZN/USD, META/USD, TSLA/USD, XAU/USDthe six real-world feeds moved onto everyBlock still carry their class's step cap (2,000 bps for the equities, 1,000 bps for gold), so a move wider than that is skipped unless the market status changed in the same update. Ring capacity 1,024 |
| 10 bps / 60 s | the other 6 crypto feedsrepublished on a 10 bps move or after 60 s, whichever is first. No step cap. Ring capacity 1,024 |
| 10 bps / 300 s, step 2,000 bps | the 4 remaining equities and the 3 energy indicesa move wider than 20 % is skipped by the contract unless the market status changed in the same update |
| 5 bps / 300 s, step 1,000 bps | XAG/USDthe metal moves less, so the trigger is tighter and the implausible-move cap is 10 %. XAU/USD kept the same trigger shape until it moved to everyBlock |
| 2 bps / 300 s, step 500 bps | the 5 FX pairsthe tightest trigger in the set, and a 5 % cap - an FX pair that moves further in one update is not moving, it is wrong |
El tope de salto es la fila que más se malinterpreta. Vale 0, y por tanto está desactivado, en todos los feeds cripto, y está activo en todos los feeds del mundo real - así que una actualización del mundo real que se mueva más allá del tope en un solo salto la omite el contrato en lugar de escribirla, salvo que el estado de mercado haya cambiado en esa misma actualización. Esa excepción es lo que deja aterrizar un hueco de fin de semana.
Qué lleva la ficha de un feed
| Campo | Valor en el conjunto de génesis |
|---|---|
| symbol | BASE/QUOTE^[A-Z0-9.]+/[A-Z]+$, at most 32 bytes, unique. The contract enforces the same shape |
| description | free textthe Chainlink-style spaced form, "ETH / USD"; description() returns it and symbol() returns the canonical one |
| assetClass | crypto | equity | commodity | fx | indexstored as 1-5 |
| decimals | 8every feed in the catalog. The field allows 0-18, so read it rather than assuming |
| capacity | ring length in rounds16,384 for ETH/USD and BTC/USD, 1,024 for every other feed - including the twelve other feeds now on everyBlock. Rounds older than this are overwritten |
| policy | paused | everyBlock | deviationstored as 0, 1, 2. A paused feed is skipped rather than refused |
| deviationBps | 10, 5 or 2the move that triggers a republish. 0 on an everyBlock feed, which needs no trigger |
| heartbeatSecs | 60 or 300republish even without a move. 0 on an everyBlock feed |
| maxStepBps | 0, 500, 1,000 or 2,000the contract skips a move wider than this. 0 disables the check and is what every crypto feed carries; every real-world feed has it live. Bypassed whenever the status changed |
| minSources | 3 on an exchange-backed feed, 1 on a Pyth-only feedthe floor below which nothing is published |
| sources | { exchanges: {venue: productId}, pyth: id }the venue-native product id per venue, and the Pyth feed id without its 0x |
Esos mismos campos son la configuración del feed en cadena, así que lo que lee de pickle_prices o de feeds(offset, limit) es esa ficha más la última ronda. decimals vale 8 en todos los feeds hoy y el campo admite de 0 a 18: léalo en lugar de suponerlo, porque el coste de equivocarse es un precio errado en ocho órdenes de magnitud.
Los identificadores de feed
Un feed se indexa por un hash de su símbolo, no por un índice y no por una dirección:
bytes32 feedId = keccak256(bytes("ETH/USD"));The canonical symbol, upper case, with a single slash - keccak256("ETH/USD"), not "ETH-USD" and not "eth/usd". The same 32 bytes key the contract's mappings, name the feed on the RPC, and appear as the indexed topic of every FeedUpdated log. You can compute it offline with any keccak-256 implementation; nothing has to be fetched to know it.
The node and the service both accept ETH/USD, ETH-USD, eth-usd or 0x<64 hex feed id and normalise before looking up, so a URL-safe spelling costs nothing.
Resolver las direcciones
Esta referencia no imprime ninguna dirección de contrato
El registro y los adaptadores por feed son predespliegues canónicos, fijados en la génesis para toda la vida de la cadena - que es justo el caso en el que publicar el literal es lo peor. Un CALL de la EVM a una cuenta sin código tiene éxito: una dirección mal escrita no hace revert, no devuelve nada y se lee como un precio de cero. Por eso este sitio documenta en su lugar el mecanismo de resolución.
The price registry and one adapter per feed are predeploys: their addresses are fixed at genesis and canonical for the life of the chain. That is precisely why this reference resolves them instead of printing them.
- pickle_prices answers with the registry's address in core and each feed's adapter in feeds[].adapter, checksummed. That is the shortest path and it needs no ABI.
- pickle_price(feed) carries that feed's adapter; pickle_ethUsdPrice carries the adapter, the registry and, under contract, the adapter again, which is what a Chainlink reader should be pointed at.
- On chain, adapterOf(feedId) returns the deployed adapter and adapterAddress(feedId) recomputes it: the adapter is CREATE2 from the registry with salt = feedId, so its address is a pure function of the registry address and the symbol.
- The first-party applications resolve every address they use at runtime rather than compiling one in - shared-ui/config.js merges the deployment's address files into config.addresses at load.
- The explorer shows that address as an account, with its code and its activity, which is the human-readable cross-check that something is deployed there. It publishes no source and no ABI: the repository is not public yet, and the explorer verifies no contract.
# The registry and one feed's adapter, resolved from the chain itself.
curl -s $RPC_URL \
-H 'content-type: application/json' \
-d '{"jsonrpc":"2.0","id":1,"method":"pickle_price","params":["ETH-USD"]}' \
| jq '{adapter: .result.adapter, feedId: .result.feedId}'
# Then prove the address has code before you call it.
curl -s $RPC_URL \
-H 'content-type: application/json' \
-d '{"jsonrpc":"2.0","id":1,"method":"eth_getCode","params":["<adapter>","latest"]}'Verify a resolved address with an eth_getCode before your first call. A CALL to an account with no code succeeds and returns nothing, so a wrong address does not revert - it reads as a price of zero.