The record
| claim_as_published | “ISA Member Arborist” https://treeservicedenverllc.com/eric-petruska/ · fetched 2026-08-21 |
|---|---|
| issuing_body | International Society of Arboriculture (ISA) |
| registry_consulted | https://certificates.directory.isa-arbor.com/ ISA Credential Holders directory — 45,816 credential records at time of lookup |
| registry_returned | No public register exists for the claim as published. |
| checked_at | 2026-08-21 |
What that means, precisely
ISA operates two distinct things under one name. It certifies individuals (ISA Certified Arborist® and related qualifications) and it sells membership. The public directory covers credentials only. ISA publishes no queryable register of members, so a claim of ISA membership cannot be confirmed or refuted from any public source.
A name search of the credential directory for “Eric Petruska” returned 0 records. A broader search for the surname alone returned 1 record, belonging to a different individual. Neither result speaks to the published claim, which is membership rather than certification.
The page does not claim ISA certification. It states membership, which is the accurate form of the claim, and the absence of a certification record is consistent with that wording rather than in conflict with it.
Reproduction
Open https://certificates.directory.isa-arbor.com/ and search “Eric Petruska” in the ‘Search by...’ field.
Live resolver: /api/resolve/isa?name=Eric%20Petruska on this host runs the same query and returns the raw registry response.
Confirm independently that ISA offers no public member lookup by searching isa-arbor.com for a member directory.
Under Article I this record states the lookup and not a conclusion. It does not say whether this business is honest, competent or worth hiring. Under Article IV, the absence of a certification record is not evidence that anyone lacks a credential. A correction is published as a new dated entry beside this one — write to corrections@credentialrecord.com.