Pith Number

pith:GQUBUXQW

pith:2012:GQUBUXQWWHLJ47WMUARZZQE3SX

not attested not anchored not stored refs pending

Flashcard games

Joel Brewster Lewis, Nan Li

arxiv:1210.2419 v2 · 2012-10-08 · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{GQUBUXQWWHLJ47WMUARZZQE3SX}

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	2026-05-18T01:30:15.847599Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

34281a5e16b1d69e7ecca0239cc09b95d40e6d38e2c9d192b20f71abcf8b3216

Aliases

arxiv: 1210.2419 · arxiv_version: 1210.2419v2 · doi: 10.48550/arxiv.1210.2419 · pith_short_12: GQUBUXQWWHLJ · pith_short_16: GQUBUXQWWHLJ47WM · pith_short_8: GQUBUXQW

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/GQUBUXQWWHLJ47WMUARZZQE3SX \
  | 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: 34281a5e16b1d69e7ecca0239cc09b95d40e6d38e2c9d192b20f71abcf8b3216

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "39c4c16e1b877578ac3b1bf9041b5450817a5b22bc812e7e06aec5897107d408",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2012-10-08T20:56:45Z",
    "title_canon_sha256": "2bb89ae910ccb69863e50253dac07388e37937ac918f19739bc8ae176b8a1540"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1210.2419",
    "kind": "arxiv",
    "version": 2
  }
}