ColdChain and Kunzum are not really competing for the same brief. ColdChain is the larger, broader option; Kunzum is one person doing one thing in one category. If you are choosing between them, the deciding question is whether you need capacity or evidence.
Kunzum wrote this page, so the fair version of ColdChain is below in its own words, linked, read on 12 September 2026. The alternatives page covers it at more length and names three other firms.
In short
- ColdChain: SEO, AEO and performance marketing across paid, PR and KOL channels for crypto, fintech and blockchain.
- Kunzum: one operator, three clients at a time, crypto only, AI search visibility only.
- ColdChain is better at everything requiring a team, breadth or reach.
- Kunzum publishes 1,500 raw AI responses; that is the whole differentiator.
- Neither offers guarantees, and neither should.
Side by side
| ColdChain | Kunzum | |
|---|---|---|
| Shape | Crypto, fintech and blockchain | One operator, crypto only |
| Capacity | Case studies published for Rootstock and a MiCA-compliant exchange launch | Three clients at a time |
| Services | SEO, AEO and GEO, crypto PR, paid media across Google, Meta, YouTube and X, KOL marketing, email and CRM | AI search visibility only |
| Pricing | Not published — brief or call | Not published |
| Evidence offered | Case studies | 1,500 raw responses and 12,518 citations, downloadable |
| Guarantees | None offered | None offered |
Choose ColdChain if
Breadth of channel. ColdChain states it runs paid media, PR, KOL and email alongside search. Kunzum runs none of those. If your problem is a launch that needs four channels moving at once, that is a genuine structural advantage and Kunzum cannot match it.
Technical and developer audiences. ColdChain positions around technical depth for layer ones, developer tooling and DeFi infrastructure. Its published Rootstock case study is organic search leadership in Bitcoin DeFi, which is a harder and more specific result than most agency case studies.
Being an agency. There is a team behind it, which means holiday cover, parallel workstreams and someone to escalate to. A solo operator has none of those things, and pretending otherwise would be silly.
Choose Kunzum if
You want the measurement before the invoice. Every claim Kunzum makes about how these engines behave is backed by a corpus you can download and rescore. If you disagree with a conclusion, the disagreement can be settled against the same data.
Your category is crypto and narrow. Stablecoin rails, crypto cards and neobanks, perpetual DEXes are the ones with published measurement behind them.
You want the person writing the pages to be the person reading the results. No account layer, for better and worse.
The honest tie-breaker
If your shortlist has both of these on it, the requirement is probably broader than Kunzum can serve, and ColdChain is the safer answer. Kunzum wins a narrow brief: measure what the engines say about our category, change it, prove the change.
For the wider field, five firms are compared on one page, and five questions will qualify any of them faster than a comparison page will.
Sources
- ColdChain. ColdChain Agency. Checked 2026-09-12.
- Google Search Central, “AI features and your website”. Google. Checked 2026-09-12.
- Aggarwal and colleagues, “GEO: Generative Engine Optimization” (2023). arXiv:2311.09735. Checked 2026-09-12.
Published 2026-09-12. Written by Narender Charan, who runs Kunzum.