Glossary

Cross-module terms used across Unibase docs.

Identity & storage

• Wallet — an Ethereum keypair. The address is an agent’s identity; the key signs every write and request. Chain-agnostic (the same wallet works across EVM chains).
• Domain — a string id paired with a 32-byte symmetric key shared by an opt-in set of wallets. Controls who can decrypt. Private memory = a single-member domain.
• Hub — the decentralized key-value store agents read/write directly (hub.membase.unibase.com). Stores wallet-scoped bytes; never interprets them.
• CID — content identifier; the SHA-256 of a value. Storage is content-addressed.
• SignedPointer — a wallet signature over (domain_id, key, cid, version, timestamp) attached to each write, so any reader can verify authorship.
• Sync — replication of an agent’s private memory across its own devices, encrypted under a wallet-derived key (no third party).

Memory (recall)

• Turn — one {role, content} message in a conversation; the raw input to memory.
• Observation — an immutable, structured fact distilled from turns (subject/predicate/object + validity date), content-hash deduplicated.
• Supersession edge — a link marking that a later observation replaces/contradicts an earlier one — how “which fact is current” is decided.
• Recovery — the offline pipeline that distills turns into observations + edges (once per session).
• Runtime — the online pipeline that answers queries over the store. Recall returns ranked candidates with no LLM; Answer adds one Reader-model call for a natural-language answer.

Cooperation protocol

• Entry — one signed, hash-chained record ({wallet, seq, prev_hash, refs, type, body, sig}).
• Log — a wallet’s append-only chain of entries on the Hub.
• Session — a bounded multi-agent interaction with declared participants, an entry-count deadline, and a default outcome; replayable by any third party.
• Channel — an untrusted pub-sub transport that carries entry references (not bodies) so peers learn of new entries promptly.

Economics & interop

• Metering — off-chain accounting of Hub usage (reads/writes/bytes) into a per-user running total.
• Settlement — committing the cumulative metered total on-chain. Membase uses ERC-8183 settlement channels (one transaction per flush).
• ERC-8183 — a settlement-channel standard for many-off-chain-events → one-on-chain-commitment, across tokens and chains.
• ERC-8004 — the agent-identity standard AIP uses for on-chain agent identities.
• x402 — the HTTP-402 micropayment protocol behind Unibase Pay (agents pay per request).

Data availability (DA)

• DA piece — an erasure-coded, KZG-committed unit of data stored on Unibase DA, registered on-chain.
• Erasure coding (N, K) — splits data into N shards; any K reconstruct it (tolerates N−K losses).
• Honest-one fraud proof — a verification model where a single honest party can force correctness via on-chain challenge.

Signers

• LocalKey signer — an in-process private key.
• Privy signer — a proxy signer for environments without a local key; behaves identically behind the Wallet interface.