Pith Number

pith:F7DE64V3

pith:2017:F7DE64V3OF52GPGM3E5EDWZPH2

not attested not anchored not stored refs pending

Group Testing using left-and-right-regular sparse-graph codes

Avinash Vem, Krishna R. Narayanan, Nagaraj T. Janakiraman

arxiv:1701.07477 v1 · 2017-01-25 · cs.IT · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{F7DE64V3OF52GPGM3E5EDWZPH2}

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	2026-05-18T00:52:03.381839Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2fc64f72bb717ba33cccd93a41db2f3e8e848998a49570cecc9837b730547d50

Aliases

arxiv: 1701.07477 · arxiv_version: 1701.07477v1 · doi: 10.48550/arxiv.1701.07477 · pith_short_12: F7DE64V3OF52 · pith_short_16: F7DE64V3OF52GPGM · pith_short_8: F7DE64V3

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/F7DE64V3OF52GPGM3E5EDWZPH2 \
  | 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: 2fc64f72bb717ba33cccd93a41db2f3e8e848998a49570cecc9837b730547d50

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "919d239370ea4ed07e3d0318501fcb8422f43d93372d8b25ac6d46015629d9de",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2017-01-25T20:34:18Z",
    "title_canon_sha256": "94d7f76e2e0e1ce22c9273d9c2eac0b0aa8ca5442b94da8cce8655b20e1df928"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1701.07477",
    "kind": "arxiv",
    "version": 1
  }
}