Pith Number

pith:OBQQDHEL

pith:2021:OBQQDHEL2UYBGJBXPWSDHL4VLU

not attested not anchored not stored refs pending

Efficient and accurate group testing via Belief Propagation: an empirical study

AminCoja-Oghlan, Manuel Penschuck, Max Hahn-Klimroth, Philipp Loick

arxiv:2105.07882 v1 · 2021-05-13 · cs.AI · cs.DM · cs.IT · math.IT · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OBQQDHEL2UYBGJBXPWSDHL4VLU}

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	2026-07-05T02:41:21.454888Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7061019c8bd5301324377da433af955d14c38833de1262740a49818f4b935554

Aliases

arxiv: 2105.07882 · arxiv_version: 2105.07882v1 · doi: 10.48550/arxiv.2105.07882 · pith_short_12: OBQQDHEL2UYB · pith_short_16: OBQQDHEL2UYBGJBX · pith_short_8: OBQQDHEL

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/OBQQDHEL2UYBGJBXPWSDHL4VLU \
  | 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: 7061019c8bd5301324377da433af955d14c38833de1262740a49818f4b935554

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5257ed12c5733695518489aa5c30e3d71e5d46e058b74940c1da9d83aacf1ea4",
    "cross_cats_sorted": [
      "cs.DM",
      "cs.IT",
      "math.IT",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2021-05-13T10:52:46Z",
    "title_canon_sha256": "36bb56dfcbc3f97cca236711e621c8b152d5884416a2ef4d1cba9c9dd6da69f7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2105.07882",
    "kind": "arxiv",
    "version": 1
  }
}