OpenChainGraph · Robinhood Chain · 7 Tools · 7 Chains

Robinhood Chain: ChainGraph Workflow Guide

Verification chains for Robinhood Chain, an Arbitrum Orbit dedicated blockchain using BoLD interactive fraud proofs, which launched mainnet 2026-07-01 with roughly 95 tokenized stocks and Robinhood Wallet access in 120+ countries. Stock tokens never rebase: splits and dividends land as an ERC-8056 uiMultiplier() change plus a UIMultiplierUpdated event, leaving raw balances static until redemption. Seven chains cover the full verification surface, from multiplier reconciliation to regulatory regime mapping to settlement-finality classification, none of it requiring a live RPC read.

7 Chains · 7 Tools Robinhood Chain ERC-8056 MiCA Art. 2(4)(a) carve-out Arbitrum BoLD Verify-only · no advice

Start here: Run the Robinhood Chain Fit Diagnostic (ART-323), a 12-question A-F diagnostic that grades your organization across stock-token application, collateral venue, index/basket, and agent-settlement paths and routes you to the relevant verification workflows below.

⬡ Open ART-323: Fit Diagnostic →

Robinhood Chain · Technology Facts

What is Robinhood Chain?

Robinhood Chain is a dedicated Arbitrum Orbit blockchain that launched mainnet on 2026-07-01, offering tokenized US stocks and ETFs to Robinhood customers across 120+ countries via the Robinhood Wallet. Consensus finality follows BoLD (Bounded Liquidity Delay), Arbitrum's interactive fraud-proof system: settlement inside the roughly week-long challenge window is optimistic, not final.

Stock tokens are 18-decimal ERC-20 contracts extended with ERC-8056, a scaled-UI-amount standard built for corporate actions. Splits and dividends never rebase the token; instead a uiMultiplier() value changes and a UIMultiplierUpdated event fires, while the raw balanceOf stays static until an actual redemption. The tokens are issued as tokenized debt securities by Robinhood Assets (Jersey) Limited ("RHJ"), with BBVI as the sole Authorised Participant able to subscribe or redeem directly from the issuer after KYB; everyone else trades secondary-market-only. A Chainlink price feed (8 decimals) already includes corporate-action adjustments, so a naive valuation expression that also multiplies by uiMultiplier double-counts the action.

Mainnet

2026-07-01 · Arbitrum Orbit

Finality

BoLD interactive fraud proofs

Token standard

ERC-20 + ERC-8056 (scaled UI amount)

Issuer

Robinhood Assets (Jersey) Limited

Sole AP

BBVI · KYB required to redeem

Price feed

Chainlink 8-decimal · corp-action inclusive

Launch scope

~95 tokenized stocks · 120+ countries

Off-hours settlement

46% of first-week transfers outside NYSE hours

7 Chains · Start with the entry point

Robinhood Chain Workflow Chains

Run ART-323 first. Its per-path scores route you to one or more of the six downstream chains below, ordered by relevance to your answers.

Entry Point

Robinhood Chain Fit Diagnostic

12-question A-F scoring across stock-token application, collateral venue, index/basket, and agent-settlement paths. Routes to the relevant chain below.

1 Node · ART-323

→ chains/rhc-fit.html

Multiplier Reconciliation

ERC-8056 Multiplier Reconciler

Reconciles a declared corporate action against the uiMultiplier() transition, event-log sequencing, and raw-balance invariance. First tooling anywhere for ERC-8056.

1 Node · ART-317

→ chains/rhc-multiplier-reconciliation.html

Regime Mapping

Financial-Instrument Regime Mapper

Maps the regulatory regime implied by a stock-token characterization: MiCA Art. 2(4)(a) carve-out, MiFID II transferable-security classification, no-US-persons gate.

1 Node · ART-318

→ chains/rhc-regime-mapping.html

Valuation Lint

Valuation Double-Count Linter

Lints a USD valuation expression for the double-application bug against the Chainlink 8-decimal feed and returns the corrected expression when it finds one.

1 Node · ART-319

→ chains/rhc-valuation-lint.html

Collateral Haircut

Halt + Staleness Collateral Haircut

Gated three-step chain: tokenized-collateral eligibility, base repo haircut, then a feed-staleness/sequencer-downtime/halt-aware haircut layer with a liquidation-risk verdict.

3 Nodes · 505 → 508 → ART-320

→ chains/rhc-collateral-haircut.html

BoLD Finality

BoLD Challenge-Window Finality Classifier

Classifies a settlement claim as soft, posted, challengeable, or final against the BoLD challenge window, flagging claims that overstate finality.

2 Nodes · ART-59 → ART-321

→ chains/rhc-bold-finality-classification.html

AP Redemption Stress

AP Concentration + Redemption-Path Stress

Stress-tests the one-token-equals-one-share exposure claim against sole-AP concentration and actual redemption reachability. Verify-only, never a position recommendation.

1 Node · ART-322

→ chains/rhc-ap-redemption-stress.html

Scope

This Is Not a MiCA/GENIUS Guide

The Tempo and Arc guides in this suite both work through the MiCA/GENIUS Act crypto-asset framing. Robinhood Chain stock tokens do not fit that framing, and reusing its question set here would route readers to the wrong regime.

Why not

Robinhood Chain stock tokens are characterized as tokenized debt securities issued by Robinhood Assets (Jersey) Limited, which places them inside the MiCA Article 2(4)(a) financial-instrument carve-out — the inverse of the MiCA/GENIUS crypto-asset regime that applies to Tempo and Arc. ART-318 exists specifically to map this inverted regime rather than assume the estate default.

What instead

The binding framework here is MiFID II transferable-security classification, prospectus exposure, and Jersey company law. See ART-318's chain for the full mapping, and treat any MiCA/GENIUS assumption imported from guide-tempo.html or guide-arc.html as a flag to re-run ART-318, not a fact.

Regulatory Framework

Regulatory Citations

All Robinhood Chain tools cite primary-source material where available and name the specific evidence they expect (event logs, feed round data, characterization facts) rather than fetching it live. Zero network calls; all figures are pasted evidence, not fabricated.

ERC-8056

Scaled UI amount standard for corporate actions on rebasing-averse tokens. uiMultiplier() and UIMultiplierUpdated carry splits/dividends; balanceOf stays static until redemption. No prior tooling existed for reconciliation before ART-317.

MiCA Art. 2(4)(a)

EU Markets in Crypto-Assets Regulation financial-instrument carve-out: instruments already qualifying as a MiFID II financial instrument fall outside MiCA's crypto-asset scope. Applies to Robinhood Chain stock tokens as tokenized debt securities.

MiFID II

EU Markets in Financial Instruments Directive II: transferable-security classification, prospectus exposure, and investor-protection rules that bind once the MiCA carve-out applies.

BCBS d349/SCO60

Basel Committee High-Quality Liquid Assets standard, referenced by the collateral-haircut chain when Robinhood Chain stock tokens are posted as collateral against a Basel-supervised balance sheet.

Arbitrum BoLD

Bounded Liquidity Delay: Arbitrum's interactive fraud-proof system. Onchain inclusion during the challenge window (roughly a week) is optimistic, not final; ART-321 classifies claims accordingly.

AP / KYB

Only a Know-Your-Business-cleared Authorised Participant may subscribe or redeem directly from the issuer. BBVI is the sole AP at issuance; ART-322 stress-tests the resulting concentration.

OpenChainGraph v0.8.0 · What These Tools Produce

Verifiable Execution Artifacts

Every Robinhood Chain tool produces an OpenChainGraph §4 artifact: a JSON document anchored by a WebCrypto SHA-256 execution_hash over the sorted-key canonical preimage of policy_parameters + output_payload. The hash is independently verifiable by any tool that re-runs the same inputs.

chaingraph_version 0.4.0 · compatible with all OCG v0.4.x consumers
execution_hash WebCrypto SHA-256 · RFC 8785 / JCS canonical preimage · independently verifiable
chain block parent_hashes, parent_tool_ids, chain_depth · full DAG traceability
compute_proof §18 groth16 zkVM receipt · deferred pending the section-18 land session for all 7 nodes
compliance_flags Machine-readable verdict: RHC_FIT_CONFIRMED, RHC_MULTIPLIER_RECONCILED, etc.
Policy Mandate export All tools export a JSON artifact + Markdown memo for direct LLM/agent consumption
zero PII All computations are fully client-side; no data transmitted. Verified by audit_signature in each artifact.
verify-only No tool executes, custodies, or gives investment advice — every node enumerates structural facts, never a recommendation.