The earliest retrievable artifact anywhere is a t-shirt design uploader, dated 27 February 2025.
Eight independent sources agree on it, including the filesystem. 26,779 older files were examined and rejected —
all browser-extension and game-cache assets stamped with an invalid 1979 epoch. So this is
seventeen months, not the vaguer “two years” this page used to claim.
The compressed timeline is the whole story.
Each date below comes from an operating-system file stamp or a platform record, not from memory.
The one exception is marked, because it should be.
2025-02-27claude.aiFirst retrievable artifact
~2025-04Firebase StudioAsserted — no record survives
2025-07-23CursorOS timestamp
2025-10-07Google AI StudioPlatform record
2025-10-31Claude CodeOS timestamp
2025-11-05CoworkEarliest artifact
2026-02-18Ollama, localOS timestamp
2026-02-26Antigravity + Gemini CLIOS timestamp
2026-04-25claude-maxOS timestamp
2026-05-22Antigravity IDEOS timestamp
Firebase Studio is the honest weak link and it stays labelled as such. I adopted it in its launch month;
no artifact from it survives, so the claim is ASSERTED, not measured. What is externally checkable is the product itself:
Firebase Studio entered preview on 9 April 2025, was renamed from Project IDX on 15 April 2025, and Google announced its
retirement in March 2026 with a final shutdown date of 22 March 2027. That is why it is no longer in the stack.
2025-02-27
First retrievable conversation anywhere — an HTML t-shirt design uploaderclaude.ai
2025-02-28
First Shopify Liquid work: “cut and paste into the Shopify HTML editor”claude.ai
2025-03-03
First structured data — a JSON-LD ItemListclaude.ai
2025-04-09
Firebase Studio enters preview; adopted in its launch monthasserted
2025-07-12
Virtual Try-On v1 — first brief specifying accessibility, performance and theme version togetherclaude.ai
2025-07-20
First game landing page: Legend of the Red Dragon 2026claude.ai
2025-07-23
Cursor adoptedfilesystem
2025-07-24
CounselAI — a civic housing-court toolclaude.ai
2025-09-14
Architecture shift to Shopify Online Store 2.0 sectionsclaude.ai
2025-10-04
Virtual Try-On deployed to Google Cloud Runclaude.ai
2025-10-07
First Google AI Studio applications — three on one dayAI Studio
2025-10-21
AI Shorts Factory — first of five tools that become VibeTubeAI Studio
2025-10-30
ThriftFind, first of three iterations on one ideaAI Studio
2025-10-31
Claude Code adoptedfilesystem
2025-11-05
Earliest artifact reachable from CoworkCowork
2025-11-13
Two YouTube optimisation tools in one dayAI Studio
2025-11-21
Legend of the Red Dragon 2026 v4.2AI Studio
2025-11-25
AGI Nexus v10.0 — autonomous publishing officeAI Studio
2025-12-06
The Synthetic Director: build beginsCowork
2026-01-02
PromptDJ and PromptDJ Pro, same dayAI Studio
2026-01-03
PromptDJ MIDI — hardware control addedAI Studio
2026-01-20
First real codebase measurement: wc -l against AGI Nexus v10claude.ai
2026-02-18
Ollama adopted — local inference on owned hardwarefilesystem
2026-02-26
Antigravity 1.0 and Gemini CLI adopted; Atelier OS created the same dayfilesystem + AI Studio
2026-03-05
PromptDJ NS-9000 ships at $79 — fourth generation, 62 days after the prototypeAI Studio
2026-03-08
NICHE-FORGE-CORE v3.0filesystem + AI Studio
2026-03-17
DDS Master Brand Hub created — origin of the flagship orchestratorAI Studio
2026-03-22
Sovereign Orchestrator Pro: first source fileCowork + Antigravity
2026-03-23
JTD Masonry — bilingual site, the only paid third-party client workclaude.ai + Antigravity
2026-03-26
Consolidation: Atelier OS retired, systems reduced from 14 to 13claude.ai
2026-04-08
The Bay State Treasure Gazette — six months after the first ThriftFindAI Studio
2026-04-21
shopify-dds-mastery skill built, hardened, ported and blind-tested 10 of 10 first attemptclaude.ai
2026-05-01
Morning Brief begins. 62 consecutive weekday issues follow, zero missedCowork + Shopify API
2026-05-22
Antigravity IDE adoptedfilesystem
2026-05-31
Evidence standard formalised: every factual claim cites file and line, or is marked NOT VERIFIEDclaude.ai
2026-06-13
110-page inventory published; all valuations stripped from my own public structured dataclaude.ai
2026-06-19
A completed build rejected for skipping the research-approval gateclaude.ai
2026-06-23
Certification error corrected: Fair Trade to Fair Wear Foundation membershipclaude.ai
2026-07-25
Eight Academy classes shipped in one day, taking the curriculum from 70 to 78own verification
2026-07-27
Full evidence audit: 556,586 authored lines measured; six published claims corrected downward, four upwardown verification