Bsocial

BSocial

Complete on-chain social protocol for BSV blockchain. Posts, likes, follows, messages, reposts, and friend requests using BitcoinSchema.org standards.

When to Use

• Create social content (posts, replies, reposts)
• Social actions (likes, follows, friend requests)
• Real-time messaging (channels, direct messages)
• Query social data by address or transaction

Create via CLI Scripts

Build and broadcast social transactions using raw WIF keys and the @1sat/templates BSocial class (included in this plugin).

Post

bun run skills/bsocial/scripts/create-post.ts <wif> "Post content" [options]

# Options:
#   --channel <name>    Post to a channel
#   --url <url>         Associate with URL
#   --tags <t1,t2>      Comma-separated tags
#   --dry-run           Build tx without broadcasting

Reply

bun run skills/bsocial/scripts/create-reply.ts <wif> <txid> "Reply content" [--tags <t1,t2>]

Like

bun run skills/bsocial/scripts/create-like.ts <wif> <txid>

Follow

bun run skills/bsocial/scripts/create-follow.ts <wif> <bapId>

Repost

bun run skills/bsocial/scripts/create-repost.ts <wif> <txid> [--context <type> --value <val>]

Message

bun run skills/bsocial/scripts/create-message.ts <wif> "Message" [options]

# Options:
#   --channel <name>    Send to channel
#   --to <bapId>        Direct message to user

Friend

bun run skills/bsocial/scripts/create-friend.ts <wif> <bapId>

Read Operations

Query social data from the BMAP API.

Posts

bun run skills/bsocial/scripts/read-posts.ts <address> [--limit 20] [--json]

Likes

bun run skills/bsocial/scripts/read-likes.ts --address <addr>
bun run skills/bsocial/scripts/read-likes.ts --txid <txid>

Follows

bun run skills/bsocial/scripts/read-follows.ts <address> [--limit 100] [--json]

Messages

bun run skills/bsocial/scripts/read-messages.ts --channel <name>
bun run skills/bsocial/scripts/read-messages.ts --address <addr>

Friends

bun run skills/bsocial/scripts/read-friends.ts <address> [--json]

Using @1sat/actions (via 1sat plugin)

For BRC-100 wallet users, @1sat/actions provides high-level social actions that handle B:// + MAP + AIP construction and wallet signing automatically. This requires the 1sat plugin and the @1sat/actions package — it is not part of bsv-skills.

See the 1sat:transaction-building skill for details.

import { createSocialPost, createContext } from '@1sat/actions'

const ctx = createContext(wallet)

const result = await createSocialPost.execute(ctx, {
  app: 'my-app',           // MAP attribution — identifies the calling application
  content: 'Hello BSV!',
  contentType: 'text/plain', // or 'text/markdown'
  tags: ['intro', 'bsv'],   // optional
})

// result: { txid, rawtx, error }

The action:

• Signs with the wallet's BAP identity key via AIP (using WalletSigner from @1sat/templates)
• Stores the 0-sat OP_RETURN output in the bsocial basket for post history
• Tags outputs with MAP fields (app:my-app, type:post, tag:intro, etc.) for filtered queries

Query post history: wallet.listOutputs({ basket: 'bsocial' })

Protocol Stack

[B Protocol] | [MAP Protocol] | [AIP Protocol]
   content       metadata         signature

• B Protocol: Binary content storage (text, media)
• MAP Protocol: Metadata key-value pairs (app, type, context)
• AIP Protocol: Author signature for verification

Context Types

Dependencies

• @bsv/sdk - Transaction building
• @1sat/templates - BSocial protocol templates (Signer abstraction, BSocial class)
• @1sat/actions - BRC-100 action system (external — requires the 1sat plugin)

API

Base URL: https://bmap-api-production.up.railway.app

REST Endpoints

Query API (fallback)

• Query: /q/{collection}/{base64Query}
• SSE: /s/{collection}/{base64Query}

Ingest

• POST /ingest with { rawTx: tx.toHex() }

Friend Encryption

Friend requests use Type42 key derivation with BRC-43 invoice numbers (2-friend-{sha256(friendBapId)}) via the BRC-100 wallet.

import { Hash, Utils } from "@bsv/sdk";
const { toHex, toArray } = Utils;

const keyID = toHex(Hash.sha256(toArray(friendBapId, "utf8")));

// Get encryption pubkey for friend request
const { publicKey } = await wallet.getPublicKey({
  protocolID: [2, "friend"],
  keyID,
  counterparty: "self",
});

// Encrypt private message for friend
const { ciphertext } = await wallet.encrypt({
  protocolID: [2, "friend"],
  keyID,
  counterparty: friendIdentityKey,
  plaintext: toArray("secret message", "utf8"),
});

// Decrypt message from friend
const { plaintext } = await wallet.decrypt({
  protocolID: [2, "friend"],
  keyID,
  counterparty: friendIdentityKey,
  ciphertext,
});

See Also

• references/schemas.md - Full schema reference
• BitcoinSchema.org - Protocol specs