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dchain/docs/api/chain.md
vsecoder 7e7393e4f8 chore: initial commit for v0.0.1
DChain single-node blockchain + React Native messenger client.

Core:
- PBFT consensus with multi-sig validator admission + equivocation slashing
- BadgerDB + schema migration scaffold (CurrentSchemaVersion=0)
- libp2p gossipsub (tx/v1, blocks/v1, relay/v1, version/v1)
- Native Go contracts (username_registry) alongside WASM (wazero)
- WebSocket gateway with topic-based fanout + Ed25519-nonce auth
- Relay mailbox with NaCl envelope encryption (X25519 + Ed25519)
- Prometheus /metrics, per-IP rate limit, body-size cap

Deployment:
- Single-node compose (deploy/single/) with Caddy TLS + optional Prometheus
- 3-node dev compose (docker-compose.yml) with mocked internet topology
- 3-validator prod compose (deploy/prod/) for federation
- Auto-update from Gitea via /api/update-check + systemd timer
- Build-time version injection (ldflags → node --version)
- UI / Swagger toggle flags (DCHAIN_DISABLE_UI, DCHAIN_DISABLE_SWAGGER)

Client (client-app/):
- Expo / React Native / NativeWind
- E2E NaCl encryption, typing indicator, contact requests
- Auto-discovery of canonical contracts, chain_id aware, WS reconnect on node switch

Documentation:
- README.md, CHANGELOG.md, CONTEXT.md
- deploy/single/README.md with 6 operator scenarios
- deploy/UPDATE_STRATEGY.md with 4-layer forward-compat design
- docs/contracts/*.md per contract
2026-04-17 14:16:44 +03:00

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Chain API

Эндпоинты для чтения блокчейна: блоки, транзакции, балансы, идентичности, валидаторы.

Статистика сети

GET /api/netstats

Агрегированная статистика сети.

curl http://localhost:8081/api/netstats
{
  "total_blocks": 1024,
  "total_txs": 4821,
  "validator_count": 3,
  "relay_count": 1,
  "total_supply_ut": 10000000000
}

Блоки

GET /api/blocks?limit=N

Последние N блоков (по умолчанию 20).

curl "http://localhost:8081/api/blocks?limit=10"
[
  {
    "index": 1024,
    "hash": "a1b2c3...",
    "prev_hash": "...",
    "timestamp": 1710000000,
    "validator": "03abcd...",
    "tx_count": 3,
    "total_fees_ut": 15000
  },
  ...
]

GET /api/block/{index}

Детали блока по высоте.

curl http://localhost:8081/api/block/1024
{
  "index": 1024,
  "hash": "a1b2c3...",
  "prev_hash": "...",
  "timestamp": 1710000000,
  "validator": "03abcd...",
  "transactions": [
    {
      "id": "tx-abc123",
      "type": "TRANSFER",
      "from": "03...",
      "to": "04...",
      "amount_ut": 1000000,
      "fee_ut": 1000
    }
  ]
}

Транзакции

GET /api/txs/recent?limit=N

Последние транзакции (по умолчанию 20).

curl "http://localhost:8081/api/txs/recent?limit=5"

GET /api/tx/{txid}

Транзакция по ID.

curl http://localhost:8081/api/tx/tx-abc123def456
{
  "id": "tx-abc123",
  "block_index": 1024,
  "type": "CALL_CONTRACT",
  "from": "03abcd...",
  "timestamp": 1710000000,
  "payload": { ... },
  "signature": "..."
}

POST /api/tx

Отправить подписанную транзакцию.

curl -X POST http://localhost:8081/api/tx \
  -H "Content-Type: application/json" \
  -d '{"type":"TRANSFER","from":"03...","payload":{...},"signature":"..."}'
{"id": "tx-abc123", "status": "accepted"}

Chain API v2

Расширенный API для работы с транзакциями.

GET /v2/chain/transactions/{tx_id}

curl http://localhost:8081/v2/chain/transactions/tx-abc123
{
  "id": "tx-abc123",
  "block_index": 1024,
  "payload": { ... },
  "payload_hex": "...",
  "signature_hex": "..."
}

GET /v2/chain/accounts/{account_id}/transactions

Транзакции для аккаунта с пагинацией.

Query параметры:

Параметр По умолчанию Описание
limit 100 Максимум (max 1000)
after_block Только блоки после N
before_block Только блоки до N
order desc asc или desc
curl "http://localhost:8081/v2/chain/accounts/03abcd.../transactions?limit=20&order=desc"

POST /v2/chain/transactions/draft

Создать черновик транзакции для подписания.

curl -X POST http://localhost:8081/v2/chain/transactions/draft \
  -H "Content-Type: application/json" \
  -d '{"from":"03...","to":"04...","amount_ut":1000000}'
{
  "tx": { ... },
  "sign_bytes_hex": "...",
  "sign_bytes_base64": "..."
}

POST /v2/chain/transactions

Отправить подписанную транзакцию (расширенный формат).

curl -X POST http://localhost:8081/v2/chain/transactions \
  -H "Content-Type: application/json" \
  -d '{"tx":{...},"signature":"..."}'

Адреса

GET /api/address/{addr}?limit=N&offset=N

Информация об адресе (DC-адрес или hex pubkey).

curl "http://localhost:8081/api/address/DCabc123?limit=20&offset=0"
{
  "address": "DCabc123...",
  "pub_key": "03abcd...",
  "balance_ut": 9500000,
  "tx_count": 12,
  "transactions": [...],
  "has_more": false
}

Идентичности и валидаторы

GET /api/identity/{pubkey|addr}

Информация об идентичности.

curl http://localhost:8081/api/identity/03abcd...
{
  "pub_key": "03abcd...",
  "address": "DCabc123...",
  "nick": "alice",
  "x25519_pub": "...",
  "registered_at": 100,
  "stake_ut": 1000000000
}

GET /api/validators

Список активных валидаторов.

curl http://localhost:8081/api/validators
[
  {"pub_key": "03...", "stake_ut": 1000000000},
  {"pub_key": "04...", "stake_ut": 1000000000}
]

GET /api/node/{pubkey|addr}?window=N

Информация об узле (статистика, репутация).

curl http://localhost:8081/api/node/03abcd...

GET /api/relays

Зарегистрированные relay-провайдеры.

curl http://localhost:8081/api/relays
[
  {
    "pub_key": "03...",
    "relay_pub": "...",
    "fee_ut": 100,
    "endpoint": ""
  }
]

Live Events

GET /api/events

Server-Sent Events поток новых блоков и транзакций.

curl -N http://localhost:8081/api/events
data: {"type":"block","index":1025,"hash":"...","tx_count":2}

data: {"type":"tx","id":"tx-abc","block":1025,"from":"03..."}