Pith Number

pith:QPDPMCRX

pith:2021:QPDPMCRXKLPRQJKPM7WYCLU4WM

not attested not anchored not stored refs pending

Study of a 43 day optical quasi-periodic oscillation for BL Lac S5 0716+714

Guo-Wei Ren, Hao-Jing Zhang, Lin Lu

arxiv:2112.09883 v2 · 2021-12-18 · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QPDPMCRXKLPRQJKPM7WYCLU4WM}

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	2026-07-05T04:11:29.367634Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

83c6f60a3752df18254f67ed812e9cb337b1194cad0892aeaf3b7425c845368f

Aliases

arxiv: 2112.09883 · arxiv_version: 2112.09883v2 · doi: 10.48550/arxiv.2112.09883 · pith_short_12: QPDPMCRXKLPR · pith_short_16: QPDPMCRXKLPRQJKP · pith_short_8: QPDPMCRX

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/QPDPMCRXKLPRQJKPM7WYCLU4WM \
  | 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: 83c6f60a3752df18254f67ed812e9cb337b1194cad0892aeaf3b7425c845368f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e859624980523d86e57e0b4cc0e8a77938d5c9558e8e795171c7fca5be29236b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2021-12-18T08:56:22Z",
    "title_canon_sha256": "8b29cdde1d2455d7ed8651f9ff99fed04eb61b15ec1524ae4ee2deb0f67d12dc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2112.09883",
    "kind": "arxiv",
    "version": 2
  }
}