FreeSign
FreeSign is a free e-signature (electronic signature, esignature) service that runs entirely in the user's browser - no upload, no account, no monthly cap, no…
От сообщества: Добавлен пользователем или импортирован; проверьте владельца перед подключениемРаботаетБез входаГлобальныйБесплатноТолько чтение
Что умеет
- Create Signing Envelope: Create a FreeSign envelope from a PDF SHA-256 hash. Do not send PDF bytes. The created envelope is NOT yet session-bound — the browser that opens the returned signing_url gene
- Verify Document Hash: Find FreeSign receipts matching a local document SHA-256 hash.
- Get Receipt: Return the envelope record (including final_pdf_sha256, final_signature_base64url, final_payload_json), per-signer signing receipts, and OpenTimestamps anchor metadata. Evidence only, nev
Какие данные видит
Нужен ли аккаунт
Не нужен: сервер работает без входа
FreeSign is a free e-signature (electronic signature, esignature) service that runs entirely in the user's browser - no upload, no account, no monthly cap, no watermark. It produces a real, standards-based PAdES-B-T electronic signature legally recognised under US ESIGN/UETA and EU eIDAS (Advanced Electronic Signature).
Список инструментов сервера (5)
Технические названия из tools/list. Нужны только разработчикам.
| create_signing_envelope | Create a FreeSign envelope from a PDF SHA-256 hash. Do not send PDF bytes. The created envelope is NOT yet session-bound — the browser that opens the returned signing_url generates an ECDSA P-256 keypair locally and POSTs the public JWK to /api/envelopes/{id}/session-bind before any protected request will succeed. AI agents calling this tool just hand the signing_url to a human, who continues in a browser. |
| verify_document_hash | Find FreeSign receipts matching a local document SHA-256 hash. |
| get_receipt | Return the envelope record (including final_pdf_sha256, final_signature_base64url, final_payload_json), per-signer signing receipts, and OpenTimestamps anchor metadata. Evidence only, never PDF bytes. |
| get_ots_proof | Return the .ots proof (base64) for a given OpenTimestamps anchor on an envelope. Use the official `ots-cli` to verify offline against Bitcoin block headers. |
| verify_audit_chain | Return an envelope's append-only audit-event hash chain together with a server-computed integrity verdict: every event_hash is recomputed from its canonical material, and the prev_event_hash linkage and per-envelope seq contiguity are checked. Evidence only, never PDF bytes. The raw events are included verbatim so the caller can independently re-derive the verdict instead of trusting `chain.valid`. |