Pith Number

pith:NXQ5TWHV

pith:2011:NXQ5TWHVDHK2Z3UUFTMBE3KBHR

not attested not anchored not stored refs pending

A broad-band X-ray view of the Warm Absorber in radio-quiet quasar MR2251-178

D. Porquet, F. Tombesi, J. Gofford, J. N. Reeves, L. Miller, S. B. Kraemer, T. J. Turner, V. Braito, Y. Fukazawa

arxiv:1103.0661 v1 · 2011-03-03 · astro-ph.HE · 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{NXQ5TWHVDHK2Z3UUFTMBE3KBHR}

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	2026-05-18T02:03:00.500288Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6de1d9d8f519d5acee942cd8126d413c7e1ae43353e2a7f3541c62ab58b57479

Aliases

arxiv: 1103.0661 · arxiv_version: 1103.0661v1 · doi: 10.48550/arxiv.1103.0661 · pith_short_12: NXQ5TWHVDHK2 · pith_short_16: NXQ5TWHVDHK2Z3UU · pith_short_8: NXQ5TWHV

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/NXQ5TWHVDHK2Z3UUFTMBE3KBHR \
  | 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: 6de1d9d8f519d5acee942cd8126d413c7e1ae43353e2a7f3541c62ab58b57479

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9cae09977432d8db0ce3dedf028ec675f333646981193c7eb4fa5b8d00c130b1",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2011-03-03T11:57:28Z",
    "title_canon_sha256": "b20abd212b041128bfaf18cce97ed93d5229f7db667a79443c889d6d111c9d60"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1103.0661",
    "kind": "arxiv",
    "version": 1
  }
}