Adoption paperwork can make a microchip feel like a finished detail, one more line ticked at the shelter desk, but the chip in her neck and the record it points to are two different things, and only one of them changed hands automatically. The chip carries a number and nothing else. When a vet, warden, or rescue scans her, that number is all the scanner shows, and the person holding her then looks the number up in the registry that holds her record. If that record still names the shelter, the call goes to the shelter, days or years after she became yours, which is why transferring the registration into your keepership is the real task hidden inside this question.
Finding Out Exactly What the Registry Holds
Start by asking the shelter, in writing, which registry holds her record, since shelters work with more than one and the answer decides where your update has to happen. The record you are confirming should contain the chip number, the registry's name, your name, address, phone and email exactly as the registry holds them, and a second contact person, and it is worth reading every field as if it were new to you, because transferred records often carry small errors picked up along the way: a digit wrong in a phone number, an old shelter address left sitting beside your name, an email nobody checks. Treat the shelter's details as the departing version and yours as the arriving one, and make sure the arriving version is complete, including a second contact person who knows her and would act quickly if you were unreachable, rather than a name added to fill a box.
Updating With the Registry, Then Reading It Back
Make the change with the registry itself, through the route the registry provides, because the registry is the keeper of the record that a scan will reach. Nothing you update anywhere else, on a tag, in an app, or in your own files, touches that record, and assuming otherwise is the quiet error behind many chips that still point to previous keepers. Once the registry confirms the update, do the step owners skip: read the saved record back, field by field, and compare it against what you submitted. Read-back is the only proof that the transfer landed as intended, that your phone number is the one stored, that the second contact is there, and that the shelter's details have genuinely given way to yours. If anything reads wrong, correct it with the registry again and read it back again, because a record nobody has re-read is a record nobody actually knows.
The Profile a Finder Opens Is a Separate Layer
Alongside the registry record sits the profile a finder reaches by scanning her tag or collar code, and that layer is yours to keep current in a way the registry record is not. The two layers do different jobs: the registry record is the formal route back to you from a chip scan, while the scannable profile can show a finder your chosen contact details and useful information about her immediately, in the moment they find her. Updating one never updates the other, so a careful owner aligns them deliberately after adoption, checking that the phone number and the second contact agree across both. Do that alignment now, while the adoption paperwork is still on the table, and repeat it whenever your details change in future. That scannable layer is maintained in KinsLe under Verified QR ID Pet Profiles, as the profile her tag opens for whoever finds her.