@startuml
title Node Claim — Peer A publish its PeerRecord (claimInfo + publishPeerRecord)

participant "DB Peer A (oc-lib)" as DBA
participant "Node A" as NodeA
participant "Indexer (shared)" as IndexerA
participant "DHT Kademlia" as DHT
participant "NATS A" as NATSA

NodeA -> DBA: DB(PEER).Search(SELF)
DBA --> NodeA: existing peer (DID_A) or new UUID

NodeA -> NodeA: LoadKeyFromFilePrivate() → priv A
NodeA -> NodeA: LoadKeyFromFilePublic() → pub A

NodeA -> NodeA: Build PeerRecord A {\n  Name, DID, PubKey,\n  PeerID: PeerID_A,\n  APIUrl: hostname,\n  StreamAddress: /ip4/.../tcp/4001/p2p/PeerID_A,\n  NATSAddress, WalletAddress\n}

NodeA -> NodeA: priv.Sign(rec) → signature
NodeA -> NodeA: rec.ExpiryDate = now + 150s

loop For every Node Binded Indexer (Indexer A, B, ...)
    NodeA -> IndexerA: TempStream /opencloud/record/publish/1.0
    NodeA -> IndexerA: strea!.Encode(Signed PeerRecord A)

    IndexerA -> IndexerA: Verify signature
    IndexerA -> IndexerA: Check PeerID_A heartbeat stream 
    IndexerA -> DHT: PutValue("/node/"+DID_A, PeerRecord A)
    DHT --> IndexerA: ok
end

NodeA -> NodeA: rec.ExtractPeer(DID_A, DID_A, pub A)
NodeA -> NATSA: SetNATSPub(CREATE_RESOURCE, {PEER, Peer A JSON})
NATSA -> DBA: Upsert Peer A (SearchAttr: peer_id)
DBA --> NATSA: ok

NodeA --> NodeA: *peer.Peer A (SELF)

@enduml