Domain Names as Evidence
A domain name carries commercial value, brand value, and evidentiary value all at once. Because a domain connects ownership records, technical configuration, traffic, and reputation, disputes over domain names rarely turn on a single fact. They turn on chronology — who owned what and when — on intent, on chains of custody across registrars and hosting providers, and on whether the record supports a likelihood of confusion with an existing trademark.
Bill Hartzer has worked in domain names and search since the 1990s, and has been retained as an expert in numerous legal matters where domain names and websites were central to the dispute. His work spans technical forensics, ownership research, valuation, and policy, connecting registrant identities, infrastructure, and content to questions of registration, use, and harm.
Decades of Domain-Specific Experience
Six Areas of Domain Expert Witness Support
Each engagement is scoped to the specific questions counsel needs answered. The six areas below cover the matters Bill Hartzer is most frequently retained for — each has its own dedicated page covering methodology, typical deliverables, and the kinds of matters it applies to.
Where Domain Expertise Becomes Case-Critical
Domain names and websites play a central evidentiary role in a recurring set of dispute types: UDRP/URS complaints and responses, ACPA litigation, typosquatting and traffic-diversion schemes, ownership disputes and stolen domains, brand confusion tied to domains and redirects, and historic-use analysis drawn from archived content and DNS records.
Independent, Evidence-First, Explained Plainly
Independent
Opinions follow the record, not the retaining party’s preferred outcome. Gaps and limitations in the evidence are documented explicitly, not glossed over.
Testable
Every conclusion is tied to a specific, citable artifact — WHOIS/RDAP history, DNS records, archived pages — so opposing counsel and the court can verify the reasoning.
Defensible
Findings are built to withstand cross-examination: reproducible methodology, documented sources, and plain-language explanations for non-technical fact-finders.
Start a Conversation About Your Matter
Every engagement begins with a conflict check and a short scoping conversation about the questions that need to be answered, the deadlines involved, and what evidence is already available.