Signed timestamp receipts for a SHA-256 hash. Send only the hash; we never see the document.
Maintain this server? Claim it
Call this server's tools from your browser. Nothing to install.
Requests go through mcptry because browsers can't call most MCP servers directly. Header values are sent to the server for that request only and are never stored or logged.
Tool list from our last check. Connect live to refresh it.
Returns a signed receipt {sha256, stamped_at, key_id, signature, public_key_url}: a booklint-family service saw this hash at stamped_at, signed with key key_id. Send ONLY a SHA-256 hex digest (64 characters). We never see or store the document — only the hash you send. This is not legal proof, notary service, evidence, or a certificate of anything. Not advice.
64 hex characters you computed yourself.
Optional key. Same as the Bearer header.
This tool isn't marked read-only, so it may change something on the server or in an account you connected.
Returns a signed receipt {sha256, stamped_at, key_id, signature, public_key_url}: a booklint-family service saw this hash at stamped_at, signed with key key_id. Send ONLY a SHA-256 hex digest (64 characters). We never see or store the document — only the hash you send. This is not legal proof, notary service, evidence, or a certificate of anything. Not advice.
| Argument | Type | Description |
|---|
| sha256* | string | 64 hex characters you computed yourself. |
| api_key | string | Optional key. Same as the Bearer header. |
{
"type": "object",
"required": [
"sha256"
],
"properties": {
"sha256": {
"type": "string",
"description": "64 hex characters you computed yourself."
},
"api_key": {
"type": "string",
"description": "Optional key. Same as the Bearer header."
}
},
"additionalProperties": false
}Checks a receipt from stamp_hash against the published public keys (same check as POST /v1/verify; pass the receipt fields as arguments). Returns valid true or false with a reason. valid true means only that this service signed that hash and time with that key. This is not legal proof, notary service, evidence, or a certificate of anything.
| Argument | Type | Description |
|---|---|---|
| key_id* | string | |
| sha256* | string | |
| api_key | string | Optional key. Same as the Bearer header. |
| signature* | string | |
| statement | string | |
| stamped_at* | string | |
| public_key_url | string |
{
"type": "object",
"required": [
"sha256",
"stamped_at",
"key_id",
"signature"
],
"properties": {
"key_id": {
"type": "string"
},
"sha256": {
"type": "string"
},
"api_key": {
"type": "string",
"description": "Optional key. Same as the Bearer header."
},
"signature": {
"type": "string"
},
"statement": {
"type": "string"
},
"stamped_at": {
"type": "string"
},
"public_key_url": {
"type": "string"
}
},
"additionalProperties": false
}