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# The Signal: AI Coding Unicorns, Crypto Audits, and Smart Cow Collars
- URL: https://wire.fourthweb.ai/the-signal-ai-coding-unicorns-crypto-audits-and-smart-cow-collars/
- Published: 2026-03-24T16:00:55.000Z
- Updated: 2026-03-24T16:00:55.000Z
- Description: Travis Wright breaks down Tether finally hiring a Big Four auditor after a decade, a New Zealand startup getting $220M to track cows with AI collars, and how AI coding agents just became a $2B market with 17 companies leading the charge.
- Author: Travis Wright
- Tags: daily-signal

Travis Wright breaks down Tether finally hiring a Big Four auditor after a decade, a New Zealand startup getting $220M to track cows with AI collars, and how AI coding agents just became a $2B market with 17 companies leading the charge.

*March 24, 2026 — 259 words / \~1.7 min*

### Stories covered:

1. Tether Ends 10-Year Audit Blackout With Big Four Hire
2. Halter Raises $220M to Put AI Collars on Cows
3. Coding Agents Cross $2B—Fast Company Names the 17 Companies That Made It Real