← The evidence ledger
Evidence row 1475028
Observed , by sync.mcp_registry/1.
- Kind
- listing
- About
- source_record mcp_registry:io.github.kriton-dev/crossref-doi-metadata
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- bd7d62f133614a89bf85b85bb3277beae3e8dc301053bc5f486cad352b7e2a2f
- Leaf
- 0xb9352e3777510975f15f285084795ee7ef0ce7730c6e362bb29c374ad594b4c2
What was observed
{
"endpoints": [
[
"web",
"https://apify.com/hermeskd/crossref-doi-metadata"
],
[
"mcp",
"https://mcp.apify.com/?tools=hermeskd/crossref-doi-metadata"
]
],
"name": "Crossref DOI Metadata — Titles, Dates & Citation Counts",
"owner_address": null,
"raw": {
"_meta": {
"io.modelcontextprotocol.registry/official": {
"isLatest": true,
"publishedAt": "2026-10-31T01:36:33.995735Z",
"status": "active",
"statusChangedAt": "2026-10-31T01:36:33.995735Z",
"updatedAt": "2026-10-31T01:36:33.995735Z"
}
},
"server": {
"$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
"_meta": {
"io.modelcontextprotocol.registry/publisher-provided": {
"apifyActor": "hermeskd/crossref-doi-metadata",
"storeDescription": "Resolve DOI identifiers to Crossref titles, venues, dates and citation counts for reference checks. $0.0013 per DOI; authors and abstracts excluded, failed lookups earn no result charge.",
"storeTitle": "Crossref DOI Metadata — Titles, Dates & Citation Counts"
}
},
"description": "Resolve DOI identifiers to Crossref titles, venues, dates and citation counts for reference checks.",
"name": "io.github.kriton-dev/crossref-doi-metadata",
"remotes": [
{
"headers": [
{
"description": "Optional: 'Bearer <your Apify API token>'. MCP clients that support OAuth can sign in to Apify instead. Runs are billed to your Apify account at the pay-per-event prices on the Actor's store page.",
"isSecret": true,
"name": "Authorization"
}
],
"type": "streamable-http",
"url": "https://mcp.apify.com/?tools=hermeskd/crossref-doi-metadata"
}
],
"title": "Crossref DOI Metadata — Titles, Dates & Citation Counts",
"version": "1.0.4",
"websiteUrl": "https://apify.com/hermeskd/crossref-doi-metadata"
}
},
"source": "mcp_registry",
"summary": "Resolve DOI identifiers to Crossref titles, venues, dates and citation counts for reference checks."
}What the leaf hashes
{"body":"bd7d62f133614a89bf85b85bb3277beae3e8dc301053bc5f486cad352b7e2a2f","id":1475028,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793412946101522,"prev":null,"subject":"mcp_registry:io.github.kriton-dev/crossref-doi-metadata","subject_kind":"source_record"}Proof
Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (246033 rows).
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- Day root
- 0x24463725d1c0d9894bd6123691d532547aaa79f0762c0e45aa6a68acf1fd71ab
- Chained
- 0x7d4824ff313dee7252a46f9d5c37b452851deb6c9f24a40c2f74ee0e53c82980
- Published
- On Arc Testnet, block 70093156: 0xedb7b832f4ebf6781b5ecd2ed241c435b862f4d3761541fa31adc1831b8c44a0