generated: '2026-07-20'
method: searched
source: https://docs.oddpool.com/llms.txt
docs: https://docs.oddpool.com/institutions/reference-data/oddpool-ids.md
description: >-
  Entity-relationship model for the Oddpool prediction-market data domain,
  derived from the documented endpoints and the enterprise Reference Data ID
  families. Retail entities (series, event, market, outcome, whale trade,
  orderbook, OHLCV bar) are cross-venue-normalized; the enterprise reference
  data layer nests four canonical Oddpool IDs.
id_families:
- id: OPI
  entity: event
  description: Oddpool ID for a matched cross-venue event.
- id: OPO
  entity: outcome
  description: Oddpool ID for an outcome within an event.
- id: OPL
  entity: venue_listing
  description: Oddpool ID for a venue-side listing (the tradable side on a venue).
- id: OPE
  entity: entity
  description: Oddpool ID for a real-world entity, cross-walked to a Wikidata Q-ID.
entities:
- name: series
  description: A Kalshi or Polymarket series (e.g. KXBTC15M, btc-up-or-down-15m).
- name: event
  description: A prediction-market event grouping outcomes; matched across venues.
- name: market
  description: A tradable market on a venue, belonging to an event.
- name: outcome
  description: A discrete outcome of an event, priced 0-1 as a probability.
- name: venue
  description: A trading venue — kalshi, polymarket, or polymarket_us.
- name: orderbook_snapshot
  description: Full YES/NO (or bid/ask) orderbook depth for a market at a point in time.
- name: ohlcv_bar
  description: Open/high/low/close probability + volume bar for a market or outcome.
- name: trade
  description: A single trade execution on a market.
- name: whale_trade
  description: A large trade (over threshold) tracked per event/market.
- name: arbitrage_opportunity
  description: A cross-venue risk-free pricing gap for the same outcome.
- name: reference_entity
  description: Canonical real-world entity with a Wikidata cross-walk (enterprise).
relationships:
- from: series
  to: event
  kind: has_many
  via: series_id
- from: event
  to: market
  kind: has_many
  via: event_id
- from: event
  to: outcome
  kind: has_many
  via: event_key
- from: market
  to: outcome
  kind: belongs_to
  via: outcome
- from: market
  to: venue
  kind: belongs_to
  via: venue
- from: market
  to: orderbook_snapshot
  kind: has_many
  via: market_id
- from: market
  to: ohlcv_bar
  kind: has_many
  via: market_ids
- from: market
  to: trade
  kind: has_many
  via: market_id
- from: event
  to: whale_trade
  kind: has_many
  via: event_id
- from: outcome
  to: reference_entity
  kind: belongs_to
  via: OPE
- from: event
  to: reference_entity
  kind: has_many
  via: OPI