{
  "schemaVersion": "1.0.0",
  "publisher": "OpenIndex",
  "index": {
    "slug": "metals-materials",
    "ticker": "METMAT",
    "name": "Metal Trusts and Materials",
    "category": "mixed",
    "objective": "GLD and SLV reference listed trusts; USAR references a rare-earth company. None of the three Stock Tokens is direct ownership of bullion or minerals."
  },
  "methodology": {
    "version": "1.0.0",
    "publishedOn": "2026-08-30",
    "lastReviewOn": "2026-08-30",
    "nextReviewOn": "2026-11-30",
    "reviewSchedule": "Quarterly, with an extraordinary review after a halt, delisting, contract migration, or material corporate action.",
    "calculation": "Price-return index normalized to 100 at publication. Each constituent uses its published target weight and multiplier-adjusted RHJ midpoint reference. Dividends, fees, execution costs, and foreign exchange effects are not included.",
    "eligibility": "A constituent must be a curated Robinhood Stock Token with an active canonical chain-4663 contract and a current RHJ reference quote. No look-alike contract is substituted.",
    "weighting": "Published target weights establish the base quantities. Those quantities remain fixed between reviews, so live constituent weights may drift with price.",
    "reconstitution": "Changes are manual and rules-based. Every constituent or target-weight change creates a new published methodology version; historical versions remain visible."
  },
  "baseline": {
    "asOf": "2026-08-29T20:51:13.949Z",
    "level": 100,
    "priceSource": "Multiplier-adjusted RHJ midpoint references"
  },
  "composition": {
    "version": "1.0.0",
    "effectiveOn": "2026-08-30",
    "totalWeightBps": 10000,
    "constituents": [
      {
        "symbol": "GLD",
        "name": "Gold ETF",
        "chainId": 4663,
        "contract": "0xC9a981FEE1F9DEc688bb123ccDeCc63D0deBFC4e",
        "targetWeightBps": 4000,
        "targetWeightPercent": 40,
        "trackedInstrument": "SPDR Gold Shares (GLD)",
        "issuer": "Robinhood Assets (Jersey) Limited"
      },
      {
        "symbol": "SLV",
        "name": "Silver ETF",
        "chainId": 4663,
        "contract": "0x411eFb0E7f985935DAec3D4C3ebaEa0d0AD7D89f",
        "targetWeightBps": 3000,
        "targetWeightPercent": 30,
        "trackedInstrument": "iShares Silver Trust (SLV)",
        "issuer": "Robinhood Assets (Jersey) Limited"
      },
      {
        "symbol": "USAR",
        "name": "USA Rare Earth",
        "chainId": 4663,
        "contract": "0xd917B029C761D264c6A312BBbcDA868658eF86a6",
        "targetWeightBps": 3000,
        "targetWeightPercent": 30,
        "trackedInstrument": "USA Rare Earth, Inc. (USAR)",
        "issuer": "Robinhood Assets (Jersey) Limited"
      }
    ]
  },
  "versionHistory": [
    {
      "version": "1.0.0",
      "effectiveOn": "2026-08-30",
      "summary": "Initial OpenIndex publication with canonical Robinhood Chain contracts, fixed base quantities, and a base level of 100."
    }
  ],
  "referenceAnalytics": {
    "slug": "metals-materials",
    "ticker": "METMAT",
    "methodology": "fixed-weight-price-relative",
    "baselineAsOf": "2026-08-29T20:51:13.949Z",
    "baseLevel": 100,
    "totalWeightBps": 10000,
    "coverageWeightBps": 10000,
    "coverage": 1,
    "missingMints": [],
    "contributions": [
      {
        "mint": "0xC9a981FEE1F9DEc688bb123ccDeCc63D0deBFC4e",
        "symbol": "GLD",
        "name": "Gold ETF",
        "weightBps": 4000,
        "weight": 0.4,
        "currentPrice": 409.175,
        "baselinePrice": 409.175,
        "priceRelative": 1,
        "returnSinceInception": 0,
        "returnContribution": 0,
        "levelContribution": 40,
        "unavailableReason": null
      },
      {
        "mint": "0x411eFb0E7f985935DAec3D4C3ebaEa0d0AD7D89f",
        "symbol": "SLV",
        "name": "Silver ETF",
        "weightBps": 3000,
        "weight": 0.3,
        "currentPrice": 61.825,
        "baselinePrice": 61.825,
        "priceRelative": 1,
        "returnSinceInception": 0,
        "returnContribution": 0,
        "levelContribution": 30,
        "unavailableReason": null
      },
      {
        "mint": "0xd917B029C761D264c6A312BBbcDA868658eF86a6",
        "symbol": "USAR",
        "name": "USA Rare Earth",
        "weightBps": 3000,
        "weight": 0.3,
        "currentPrice": 18.03,
        "baselinePrice": 18.03,
        "priceRelative": 1,
        "returnSinceInception": 0,
        "returnContribution": 0,
        "levelContribution": 30,
        "unavailableReason": null
      }
    ],
    "status": "available",
    "level": 100,
    "returnSinceInception": 0,
    "currentReferenceAsOf": "2026-08-30T00:19:36.012813254Z",
    "label": "RHJ reference analytics; not executable performance or an investment return"
  },
  "disclosures": [
    "This is a price-return index and not an executable NAV or investment product.",
    "Robinhood Stock Tokens are tokenised debt securities; they do not confer ownership, voting, or other shareholder rights in an underlying security.",
    "A methodology review does not trade or alter assets already held in a user's wallet."
  ]
}