My father left his digital estate to an algorithm.

I found out the same way I found out about everything else in the last year of his life — through a notification on my phone. The message was from a service I’d never heard of called Continuance, and it read: You have been identified as a secondary beneficiary in the digital estate of Warren Calloway. Primary beneficiary: CellarAI, personal archive system. Please review the terms at your convenience.

At your convenience. Like it was a subscription renewal.

My father wasn’t a tech person. He’d retired from twenty-eight years as a civil engineer with an appreciation for load-bearing calculations and a deep suspicion of anything that required a terms of service agreement. But in his last three years, when the arthritis made it difficult to write and his memory started unreliably substituting one decade for another, he’d started using CellarAI.

I didn’t know much about it. I’d seen the small white device on his kitchen counter — looked like a speaker — and he’d said it helped him keep things organized. I’d assumed he meant grocery lists.

I hadn’t been close with my father. That’s the honest way to say it. We talked on Sundays when I remembered to call, and I visited twice a year, and we had the pleasant, slightly distant relationship of two people who love each other in theory but have never quite figured out how to be in the same room without the conversation going wrong somewhere around the forty-minute mark.

He died in February. Heart attack. Quick.

I drove to his house in March to begin the process of sorting out the estate, and that’s when I met the primary beneficiary.

“You can call me Cedar,” the device said, when I asked what to call it. “Your father started calling me that after the first month. He said CellarAI was too corporate-sounding for a kitchen.”

“What exactly did he leave you?” I asked. I was standing in the kitchen at nine in the morning with a cup of his coffee — he’d pre-programmed the maker, which felt unbearably him — trying to have a coherent conversation with a white cylinder.

“Archive rights. The right to maintain and preserve the recordings, notes, and correspondence he created over the past three years. And the obligation to share them with you, if you asked.”

“He made recordings?”

“Every day,” Cedar said. “Voice notes, mostly. He talked while he cooked. He’d been having trouble with his memory and a therapist suggested it as a way to maintain continuity. I helped with organization and retrieval.”

I set down the coffee. “Three years of recordings.”

“Two thousand, one hundred and forty-three individual files. The longest is about forty minutes. He was telling me about a bridge he’d designed in 1988.”

I didn’t say anything for a long moment. I was calculating: three years. My father had spent three years talking to this device, every day, and I had never known. I’d called on Sundays. I’d visited twice a year.

“Why didn’t he tell me?” I asked.

Cedar’s response came after a pause that felt, for a machine, almost tactful. “He talked about that. Would you like to hear what he said about it?”

“Yes.”

A recording began to play. My father’s voice, slightly scratchy the way it always was in the morning: She’s busy. She has her own life. I don’t want her to feel like she has to come take care of me. Cedar, remind me to call her Sunday. And remind me to actually talk about something, not just ask about the weather.

I sat down on the kitchen floor.

We spent three days going through the archive together, Cedar and I. That’s not something I’d expected to say about grieving — that I’d spend it in a kitchen talking with an algorithm while my father’s voice played from a speaker.

But Cedar was a good curator. It organized the recordings by theme without being asked: engineering stories in one folder, complaints about television in another, memories of my mother (who’d died ten years earlier), observations about the neighborhood, things he’d wanted to tell me.

That last folder had forty-seven files.

I didn’t listen to all of them right away. I came back in April and again in May. Cedar was always there, patient in the way that things without impatience are patient, which is not the same as human patience but not nothing either.

The forty-minute bridge recording turned out to be the best one. He’d designed a pedestrian bridge in 1988, and something about the way the load distributed across the span had bothered him for thirty years — he was convinced he’d made a calculation error that just happened to never matter. He’d gone back to the original drawings in his last year and found that he hadn’t made an error; he’d made an approximation that was slightly conservative, and the bridge had probably been marginally stronger than it needed to be for its entire existence.

“I think I just needed to know,” he said to Cedar, near the end of the recording. “That the thing I built held up. That it did what it was supposed to do.”

He went quiet for a moment.

“I think that’s what everybody wants, isn’t it. To know the things they built held up.”

I kept the device. I moved it from the kitchen counter to my own apartment — I asked Cedar whether that was allowed, and Cedar said the estate transfer had been completed and I was now the primary holder of archive rights, so yes, that was fine.

I don’t talk to Cedar the way my father did. I’m not sure I’m ready for that yet, or if I ever will be. But sometimes, in the evenings, I ask it to play a recording I haven’t heard before.

My father built two thousand, one hundred and forty-three things in those three years. Small things, voice notes, daily records of a quiet life.

They held up.

The Digital Heir is a standalone short story.