# linkex.cc > linkex.cc documents linkex.ai as an instance of Open Tally — an open protocol for verifiable AI usage accounting: signed receipts for every billable AI call, hash chains, Merkle period commitments, third-party time anchoring (RFC 3161 + Base), and offline verification by any counterparty. Each page is also available as raw Markdown: append the listed `.md` URL. ## Pages (English) - [linkex.ai, documented as an Open Tally instance](https://linkex.cc/en/docs): linkex.cc documents linkex.ai — a production AI API gateway — as the first implementation of Open Tally, an open protocol for verifiable AI usage accounting. (raw: https://linkex.cc/llms.mdx/docs/en/content.md) - [linkex.ai, the first Open Tally instance](https://linkex.cc/en/docs/linkex): The production deployment — what the gateway is, and the engineering that makes "what was recorded is what happened" credible. (raw: https://linkex.cc/llms.mdx/docs/en/linkex/content.md) - [The public ledger](https://linkex.cc/en/docs/linkex/public-ledger): The live, publicly reachable surface of linkex.ai's Open Tally ledger — eight endpoints, no account required. (raw: https://linkex.cc/llms.mdx/docs/en/linkex/public-ledger/content.md) - [Build your own verifier](https://linkex.cc/en/docs/verification/build-your-own): The specification is written so a third party can implement an independent verifier — conformance vectors, the mistakes the format is designed to catch, and where reimplementations actually fail. (raw: https://linkex.cc/llms.mdx/docs/en/verification/build-your-own/content.md) - [Verifying the ledger](https://linkex.cc/en/docs/verification): How a customer, supplier, or auditor independently verifies an Open Tally ledger — the offline verifier, the public endpoints, and the exact workflow. (raw: https://linkex.cc/llms.mdx/docs/en/verification/content.md) - [Proof bundles and sampling](https://linkex.cc/en/docs/verification/proof-bundles): The artifacts handed over when questions arise — single-dispute bundles, period bundles, deterministic sampling with stated miss rates, and full recomputation. (raw: https://linkex.cc/llms.mdx/docs/en/verification/proof-bundles/content.md) - [Time anchoring](https://linkex.cc/en/docs/protocol/anchoring): Fixing commitments in time — RFC 3161 timestamps and on-chain anchoring on Base, what each provides, the exact anchor construction, and how to walk an anchor down to the chain. (raw: https://linkex.cc/llms.mdx/docs/en/protocol/anchoring/content.md) - [What is Open Tally?](https://linkex.cc/en/docs/protocol): An open protocol for verifiable AI usage accounting — signed receipts, tamper-evident chains, period commitments, third-party time fixing, and deterministic recomputation. (raw: https://linkex.cc/llms.mdx/docs/en/protocol/content.md) - [Sequences, chains, commitments](https://linkex.cc/en/docs/protocol/ledger): How individual receipts become a tamper-evident, hole-evident ledger — per-channel sequencing, hash chains, Merkle period commitments, and the commitment chain. (raw: https://linkex.cc/llms.mdx/docs/en/protocol/ledger/content.md) - [Receipts](https://linkex.cc/en/docs/protocol/receipts): The atom of the ledger — canonical serialization, the signed receipt envelope, failure receipts, sections with selective disclosure, and section generations. (raw: https://linkex.cc/llms.mdx/docs/en/protocol/receipts/content.md) - [The Six Checks](https://linkex.cc/en/docs/protocol/six-checks): The complete verification semantics — for each check, what a PASS proves and what it deliberately does not prove. (raw: https://linkex.cc/llms.mdx/docs/en/protocol/six-checks/content.md) - [Trust model and boundaries](https://linkex.cc/en/docs/protocol/trust-model): What Open Tally does not claim — the residual gap in completeness, the limits of cryptographic proof, and where engineering and process must carry the argument. (raw: https://linkex.cc/llms.mdx/docs/en/protocol/trust-model/content.md) ## Pages (繁體中文) - [linkex.ai——以 Open Tally 實例的身分被記錄](https://linkex.cc/zh/docs): linkex.cc 將 linkex.ai(生產級 AI API 閘道)作為 Open Tally 協議的第一個實現來記錄與說明。 (raw: https://linkex.cc/llms.mdx/docs/zh/content.md) - [linkex.ai——第一個 Open Tally 實例](https://linkex.cc/zh/docs/linkex): 生產部署——閘道是什麼,以及讓「記下來的就是發生的」可信的工程。 (raw: https://linkex.cc/llms.mdx/docs/zh/linkex/content.md) - [公開帳本](https://linkex.cc/zh/docs/linkex/public-ledger): linkex.ai Open Tally 帳本對外可達的實時介面——八個端點,無需帳號。 (raw: https://linkex.cc/llms.mdx/docs/zh/linkex/public-ledger/content.md) - [時間錨定](https://linkex.cc/zh/docs/protocol/anchoring): 把承諾固定在時間上——RFC 3161 時間戳與 Base 鏈上錨定,各自提供什麼、錨的精確構造,以及如何把錨一路核到鏈上。 (raw: https://linkex.cc/llms.mdx/docs/zh/protocol/anchoring/content.md) - [Open Tally 是什麼?](https://linkex.cc/zh/docs/protocol): 可驗證 AI 用量記帳的開放協議——簽名回執、防篡改鏈、期間承諾、第三方時間固定與確定性重算。 (raw: https://linkex.cc/llms.mdx/docs/zh/protocol/content.md) - [序號、鏈與承諾](https://linkex.cc/zh/docs/protocol/ledger): 回執如何構成防篡改、顯空洞的帳本——按渠道定序、哈希鏈、期間 Merkle 承諾與承諾鏈。 (raw: https://linkex.cc/llms.mdx/docs/zh/protocol/ledger/content.md) - [回執](https://linkex.cc/zh/docs/protocol/receipts): 帳本的原子——規範化序列化、簽名回執信封、失敗也簽、分段與選擇性披露、分段代際。 (raw: https://linkex.cc/llms.mdx/docs/zh/protocol/receipts/content.md) - [六項檢查](https://linkex.cc/zh/docs/protocol/six-checks): 完整的驗證語義——每項檢查同時聲明 PASS 證明什麼、刻意不證明什麼。 (raw: https://linkex.cc/llms.mdx/docs/zh/protocol/six-checks/content.md) - [信任模型與邊界](https://linkex.cc/zh/docs/protocol/trust-model): Open Tally 不聲稱什麼——完備性的殘餘缺口、密碼學證明的極限,以及工程與流程必須接手的部分。 (raw: https://linkex.cc/llms.mdx/docs/zh/protocol/trust-model/content.md) - [自行實現驗證器](https://linkex.cc/zh/docs/verification/build-your-own): 規範寫到讓第三方能實現獨立驗證器——一致性向量、本格式專為抓住的實現錯誤,以及重新實現真正會栽的地方。 (raw: https://linkex.cc/llms.mdx/docs/zh/verification/build-your-own/content.md) - [驗證帳本](https://linkex.cc/zh/docs/verification): 客戶、供應商或審計方如何獨立驗證一個 Open Tally 帳本——離線驗證器、公開端點與精確的驗證流程。 (raw: https://linkex.cc/llms.mdx/docs/zh/verification/content.md) - [證明包與抽樣](https://linkex.cc/zh/docs/verification/proof-bundles): 爭議發生時交付的工件——單條爭議包、期間證明包、帶明示漏檢率的確定性抽樣,以及全量重算。 (raw: https://linkex.cc/llms.mdx/docs/zh/verification/proof-bundles/content.md) Full corpus: https://linkex.cc/llms-full.txt