How does the trading platform keep an endpoint's data private on an otherwise shared ledger?

Each endpoint gets an Identity Smart Contract to hold its personal data, and pairs of participants open encrypted private channels — so the ledger is shared but sensitive readings are not exposed.

Privacy on a shared ledger is a real tension: everyone maintains the chain, yet nobody should see a neighbour's raw consumption. Two mechanisms address it:

• Identity Smart Contract (ISC). After registering via PKI, each endpoint deploys an ISC on the chain to store its personal/identity data under its own control.
• Private channels. An ISC and its endpoint server can establish secure channels using an encryption protocol (e.g. Diffie-Hellman key exchange) to keep on-chain communication confidential.

Combined with cryptographic proofs of data (below), this lets participants prove their trades and predictions are valid without publishing the underlying meter readings — transparency of the process without disclosure of the data.

Go deeper:

• Diffie–Hellman key exchange (Wikipedia) — Deriving a shared secret over a public channel to open a confidential channel.