Holder set and concentration for a Robinhood Chain token (PRO+)

Holder balances and concentration metrics. Not trade-derived — balances are folded from ERC-20 Transfer logs, which our node retains in full, so they are exact rather than estimated. The Solana counterpart is GET /tokens/{mint}/holders — a live on-chain census via mint-scoped getProgramAccounts (shipped 2026-08-16).

Every token carries a reconciliation. verified is true only when the reconstructed sum(balance) equals on-chain totalSupply() at a pinned block. A token that fails, or has not been swept yet, returns verified: false with a stated unverified_reason — never as though it were exact.

Concentration excludes pools and burn addresses. The largest holder of a token is normally its own liquidity pool, so counting it would make top1_share meaningless; pools and burns are reported separately as pool_held_pct / burned_pct and excluded from the circulating denominator. Balances are raw uint256 and are returned as strings to preserve precision. Holder addresses may be ERC-4337 smart accounts, so holder_count is not a headcount of people.

Holder growth (2026-08-17). holder_growth.{1h,24h,7d} reports entered (first Transfer at-or-after the window's cutoff_block), entered_still_holding, exited (pre-existing holders whose last movement in the window left them at zero) and net ≈ Δ holder_count — possible because the fold keeps first_seen_block/last_block and retains zero-balance rows. The Solana census has no history and cannot answer this.