docs(chain-fusion): add missing Learn Hub images and architecture diagrams#229
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marc0olo merged 1 commit intoinfra/learn-hub-migration-prepfrom May 9, 2026
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…grams Resolves #223. Adds the images and diagrams that were not carried over when PR #213 migrated the chain fusion concept pages. Raster images (sourced from Learn Hub, downloaded and committed): - bitcoin.md: full-stack integration architecture, ckBTC system architecture (minter/ledger/Bitcoin canister/checker), Bitcoin checker canister OFAC flow - dogecoin.md: Dogecoin adapter + canister + protocol-stack architecture - exchange-rate-canister.md: XRC data-flow (forex providers + exchanges → XRC → requesting canister) PlantUML diagrams (new, source-controlled): - bitcoin.md: Bitcoin canister API spending flow sequence (bitcoin_get_utxos → sign_with_ecdsa per input → bitcoin_send_transaction) - ethereum.md: EVM RPC component architecture (ICP | JSON-RPC Providers | Ethereum), replacing the Learn Hub raster that used the banned term "Web 2.0" as a zone label - solana.md: SOL RPC component architecture (ICP | JSON-RPC Providers | Solana), same reason Skipped: Ethereum marketing 3D render (promotional, not technical); ckBTC retrieval sequence (already expressed in existing PlantUML); SNS supply-demand chart (generic economics diagram, no ICP content).
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…grams (#229) Closes #223. ## Summary Adds all images and diagrams that were not carried over when PR #213 migrated the chain fusion concept pages. Every image was individually evaluated; three were skipped (see below). ### Raster images added (sourced from Learn Hub) - **`bitcoin.md`**: full-stack integration architecture (adapter + protocol layers + Bitcoin canister); ckBTC system architecture (minter, ledger, Bitcoin canister, checker canister with labeled data flows); Bitcoin checker canister OFAC screening flow - **`dogecoin.md`**: Dogecoin adapter + canister + protocol-stack architecture diagram - **`exchange-rate-canister.md`**: XRC data-flow diagram (forex providers + exchanges → XRC → requesting canister) ### PlantUML diagrams added (source-controlled, new) - **`bitcoin.md`**: Bitcoin canister API spending-flow sequence (`bitcoin_get_utxos` → `sign_with_ecdsa` per input → `bitcoin_send_transaction`) - **`ethereum.md`**: EVM RPC component architecture (Internet Computer | JSON-RPC Providers | Ethereum) — recreated instead of using the Learn Hub raster, which had "Web 2.0" as a zone label (banned term) - **`solana.md`**: SOL RPC component architecture (Internet Computer | JSON-RPC Providers | Solana) — same reason; also complements the existing call-flow sequence diagrams already in this file ### Skipped - **Ethereum marketing render** (`34575033443348`): promotional 3D rendering, not a technical diagram; inconsistent with the clean diagram style used elsewhere - **ckBTC retrieval sequence** (`44598026440340`): the flow it depicts is already expressed in the existing PlantUML in `bitcoin.md` - **SNS supply-demand chart** (`34146812547476`): generic economics textbook diagram with no ICP-specific content ## Sync recommendation `informed by Learn Hub articles "Bitcoin Integration", "Bitcoin Checker Canister", "Chain-Key Bitcoin", "Dogecoin Integration", "Exchange Rate Canister", "EVM RPC Canister", "SOL RPC Canister" (migrated, source retired)`
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Closes #223.
Summary
Adds all images and diagrams that were not carried over when PR #213 migrated the chain fusion concept pages. Every image was individually evaluated; three were skipped (see below).
Raster images added (sourced from Learn Hub)
bitcoin.md: full-stack integration architecture (adapter + protocol layers + Bitcoin canister); ckBTC system architecture (minter, ledger, Bitcoin canister, checker canister with labeled data flows); Bitcoin checker canister OFAC screening flowdogecoin.md: Dogecoin adapter + canister + protocol-stack architecture diagramexchange-rate-canister.md: XRC data-flow diagram (forex providers + exchanges → XRC → requesting canister)PlantUML diagrams added (source-controlled, new)
bitcoin.md: Bitcoin canister API spending-flow sequence (bitcoin_get_utxos→sign_with_ecdsaper input →bitcoin_send_transaction)ethereum.md: EVM RPC component architecture (Internet Computer | JSON-RPC Providers | Ethereum) — recreated instead of using the Learn Hub raster, which had "Web 2.0" as a zone label (banned term)solana.md: SOL RPC component architecture (Internet Computer | JSON-RPC Providers | Solana) — same reason; also complements the existing call-flow sequence diagrams already in this fileSkipped
34575033443348): promotional 3D rendering, not a technical diagram; inconsistent with the clean diagram style used elsewhere44598026440340): the flow it depicts is already expressed in the existing PlantUML inbitcoin.md34146812547476): generic economics textbook diagram with no ICP-specific contentSync recommendation
informed by Learn Hub articles "Bitcoin Integration", "Bitcoin Checker Canister", "Chain-Key Bitcoin", "Dogecoin Integration", "Exchange Rate Canister", "EVM RPC Canister", "SOL RPC Canister" (migrated, source retired)