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Idempotency belongs in the ledger, not in every caller

Idempotency belongs in the ledger, not in every caller

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5 min read
What regulators, banks and consultancies say about controlling AI agent spending (11 documents, 2026)

What regulators, banks and consultancies say about controlling AI agent spending (11 documents, 2026)

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4 min read
Why Money Calculations Should Not Use Floating Point

Why Money Calculations Should Not Use Floating Point

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10 min read
Por Que uma Transação com Chip é Mais Segura

Por Que uma Transação com Chip é Mais Segura

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3 min read
I built a social fintech platform solo, no co-founder, no funding, no CS degree. Here's AURUM.

I built a social fintech platform solo, no co-founder, no funding, no CS degree. Here's AURUM.

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1 min read
Six commands that beat my own PDF fraud detector, ranked by how well

Six commands that beat my own PDF fraud detector, ranked by how well

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8 min read
I Built an Investment Simulator That Models the Journey - Not Just Compound Interest

I Built an Investment Simulator That Models the Journey - Not Just Compound Interest

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3 min read
Irreversible by Design: Building Safer Crypto Transfer Flows

Irreversible by Design: Building Safer Crypto Transfer Flows

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13 min read
under_investigation is a status, not an excuse

under_investigation is a status, not an excuse

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6 min read
Inscribe says AI is under 5% of document fraud, AppZen 70.8%. Both are right.

Inscribe says AI is under 5% of document fraud, AppZen 70.8%. Both are right.

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3 min read
Parse crypto amounts like hostile input, declare rounding first

Parse crypto amounts like hostile input, declare rounding first

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7 min read
How Representment Works: What Happens When a Merchant Challenges a Chargeback

How Representment Works: What Happens When a Merchant Challenges a Chargeback

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5 min read
9 Free Endpoints I Built Into a Financial Data API — With Curl/Python Examples

9 Free Endpoints I Built Into a Financial Data API — With Curl/Python Examples

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4 min read
Permission Withdrawal: Auditable Data Consent and Active Session Access

Permission Withdrawal: Auditable Data Consent and Active Session Access

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6 min read
Banks Are Renting Their Agents. These Two Built One.

AI Engineer New York Coverage

Banks Are Renting Their Agents. These Two Built One.

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1 min read
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