announce-coldkey-swap

Step one of the two-step coldkey migration: publishes only the BlakeTwo256 hash of new_coldkey_ss58 — committing to the new key without revealing it — and starts the chain's announcement delay. After the delay, run the swap_coldkey_announced intent to move EVERYTHING this coldkey owns (balance, stake, subnets) to the new key; check timing with the coldkey_swap_announcement read. The first announcement charges the key-swap cost (0.1 TAO, recycled); re-announcing after the chain's reannouncement delay is free. While an announcement is pending, the chain blocks every other signed extrinsic from this coldkey — only the swap-related calls and shielded (encrypted) submission go through — so the account is operationally locked for the full delay. Before announcing, be certain you control the new coldkey and have its mnemonic backed up. A pending announcement can be cancelled with clear_coldkey_swap_announcement, and the legitimate holder can freeze an unauthorized one with dispute_coldkey_swap.

Parameters

Address parameters (--hotkey, --coldkey, --dest, ...) accept a raw ss58 address, an address-book or proxy-book name, or a local wallet/hotkey name.

CLI

Preview with --dry-run (shows fee, effects, and policy result without submitting), then submit:

btcli tx announce-coldkey-swap \
  --new-coldkey <ss58|name> --dry-run
btcli tx announce-coldkey-swap \
  --new-coldkey <ss58|name> -w my_coldkey

Python

import bittensor as sub
from bittensor.wallet import Wallet

wallet = Wallet(name="my_coldkey", hotkey="my_hotkey")
intent = sub.AnnounceColdkeySwap(new_coldkey_ss58="5F...")

async with sub.Client("finney") as client:
    plan = await client.plan(intent, wallet)   # fee, effects, policy — no submission
    result = await client.execute(intent, wallet)
    if not result.success:
        print(result.error.code, result.error.remediation)

Or build it by op name, as an agent would:

await client.execute_tool("announce_coldkey_swap", {...}, wallet)