Pith Number

pith:VQV276CB

pith:2015:VQV276CBBNRHT2A4W3QEUD2OFV

not attested not anchored not stored refs pending

Measuring Verifiability in Online Information

Alfredo J. Velasco, Daniel N. Rockmore, Michael S. Evans, Reed H. Harder

arxiv:1509.05631 v2 · 2015-09-18 · cs.SI · cs.DL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VQV276CBBNRHT2A4W3QEUD2OFV}

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	2026-05-18T01:26:50.119982Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ac2baff8410b6279e81cb6e04a0f4e2d6740f5ceda9d17fa00da653092ff7188

Aliases

arxiv: 1509.05631 · arxiv_version: 1509.05631v2 · doi: 10.48550/arxiv.1509.05631 · pith_short_12: VQV276CBBNRH · pith_short_16: VQV276CBBNRHT2A4 · pith_short_8: VQV276CB

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/VQV276CBBNRHT2A4W3QEUD2OFV \
  | 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: ac2baff8410b6279e81cb6e04a0f4e2d6740f5ceda9d17fa00da653092ff7188

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0b54f97fca6f725bad50e488f9b034c26993cc940965c3b8abbe9f5cd83da149",
    "cross_cats_sorted": [
      "cs.DL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SI",
    "submitted_at": "2015-09-18T13:46:47Z",
    "title_canon_sha256": "58a21e5fa062a58573bfb7ed9a0d0f88fd7f18a609517f85369faa3d15bd0a78"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.05631",
    "kind": "arxiv",
    "version": 2
  }
}