Pith Number

pith:VZ2ZRGR2

pith:2011:VZ2ZRGR2H3KF6KRSRXX2BGFECJ

not attested not anchored not stored refs pending

Detection of A Transient X-ray Absorption Line Intrinsic to the BL Lacertae Object H 2356-309

(2) MIT), Claude R. Canizares (2) ((1) UC Irvine, David A. Buote (1), Philip J. Humphrey (1), Taotao Fang (1)

arxiv:1102.3646 v1 · 2011-02-17 · astro-ph.HE · astro-ph.CO · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VZ2ZRGR2H3KF6KRSRXX2BGFECJ}

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	2026-05-18T02:03:09.852431Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ae75989a3a3ed45f2a328defa098a412529cd9aaffddeaea4d446a7eb2861ae0

Aliases

arxiv: 1102.3646 · arxiv_version: 1102.3646v1 · doi: 10.48550/arxiv.1102.3646 · pith_short_12: VZ2ZRGR2H3KF · pith_short_16: VZ2ZRGR2H3KF6KRS · pith_short_8: VZ2ZRGR2

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/VZ2ZRGR2H3KF6KRSRXX2BGFECJ \
  | 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: ae75989a3a3ed45f2a328defa098a412529cd9aaffddeaea4d446a7eb2861ae0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "343a36efc63af42fb6af92b2cd93ba48b933e19a69c558c8c7533400bf52b028",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2011-02-17T17:47:35Z",
    "title_canon_sha256": "b1f126fe076ab3a3993dde22665dce436c27b71469a67b3a145932bf3be8a3e7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1102.3646",
    "kind": "arxiv",
    "version": 1
  }
}