Pith Number

pith:QTQ2W7AF

pith:2013:QTQ2W7AFTF2VDWX5KJCSAXMVZO

not attested not anchored not stored refs pending

On the Nature of Superhumps

J. Smak

arxiv:1307.1228 v1 · 2013-07-04 · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QTQ2W7AFTF2VDWX5KJCSAXMVZO}

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	2026-05-18T03:06:21.940353Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

84e1ab7c05997551dafd5245205d95cb847b70dfc42b9e86eb31f99e6111ed8f

Aliases

arxiv: 1307.1228 · arxiv_version: 1307.1228v1 · doi: 10.48550/arxiv.1307.1228 · pith_short_12: QTQ2W7AFTF2V · pith_short_16: QTQ2W7AFTF2VDWX5 · pith_short_8: QTQ2W7AF

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/QTQ2W7AFTF2VDWX5KJCSAXMVZO \
  | 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: 84e1ab7c05997551dafd5245205d95cb847b70dfc42b9e86eb31f99e6111ed8f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f4ca49809ffc866012672043c49ada7680b971bc7d9d563f5c52aef9f78c0c99",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2013-07-04T07:42:57Z",
    "title_canon_sha256": "33be204a9a3f29239cb175c45417563751d6bb755ab136973970d3cb2a091008"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.1228",
    "kind": "arxiv",
    "version": 1
  }
}