Filter. Tokens that wrap an existing exchange-traded fund (ETF) holding physical metals or metal-economy equities, rather than a single equity or a unit of physical metal.

Weighting. Market-cap weighted with 40% single-issuer cap.

A registered methodology slot for tokens that wrap an entire ETF rather than a single share or a gram of metal. The wrapper is a derivative-on-derivative (token → ETF share → underlying basket). Structurally distinct from both TS-GMRI (commodity-backed) and TS-GMRI-MEQ (equity), so it earns its own slot. Live example at registration: Backed Finance bGLD (wrap of SPDR Gold Shares GLD). Slot reserved 17 June 2026 for prior art; no value is published until N≥3 eligible constituents from ≥2 distinct issuers and ≥2 distinct underlying ETF strategies.

Tokenized ETF wrappers are a structurally new wrapper class with no conventional TradFi analog — existing commodity-ETF indices track underlyings, not derivative wrappers. Issuer pipeline visible: Backed Finance (additional wraps for GDX, SLV, URA planned), 21Shares + Securitize tokenized-ETF programme, Swarm Markets ETF tokens. Registering the slot now establishes prior art before the category becomes contested.

Comparable in spirit to: No direct analog — white space in the index industry. Closest TradFi reference: commodity-ETF fund-of-funds (rare).

The index is recomputed daily at 00:00 UTC from CoinGecko closing-day market caps. Let MC_i,t be the circulating market capitalisation of constituent i on day t, and MC_i,0 its value on the base date (7 June 2026, base value 100).

Both cap-weighted and equal-weighted variants are rounded to 2 decimal places for display. New constituents are chained in at the next monthly review using a continuity multiplier so the historical series is not distorted. The full rules are fixed in the methodology document below.