Pith Number

pith:7GLIHCRS

pith:2021:7GLIHCRSM3C3ONYUW5SX33T4WJ

not attested not anchored not stored refs pending

To Recommend or Not? A Model-Based Comparison of Item-Matching Processes

Johan Ugander, Serina Chang

arxiv:2110.11468 v1 · 2021-10-21 · cs.CY

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7GLIHCRSM3C3ONYUW5SX33T4WJ}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-07-05T03:24:47.420258Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f996838a3266c5b73714b7657dee7cb2535036725dadbac41d6ba28a783093ab

Aliases

arxiv: 2110.11468 · arxiv_version: 2110.11468v1 · doi: 10.48550/arxiv.2110.11468 · pith_short_12: 7GLIHCRSM3C3 · pith_short_16: 7GLIHCRSM3C3ONYU · pith_short_8: 7GLIHCRS

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/7GLIHCRSM3C3ONYUW5SX33T4WJ \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: f996838a3266c5b73714b7657dee7cb2535036725dadbac41d6ba28a783093ab

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9b47c0272f6713e89bb38bc4e6ae993fe7da4826e81c2aeb17e02b33978963ca",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CY",
    "submitted_at": "2021-10-21T20:37:56Z",
    "title_canon_sha256": "607da0ee5ababaee3ab4b16f1305ef73117640e55ab6a402af256ba8ae7b6e58"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2110.11468",
    "kind": "arxiv",
    "version": 1
  }
}