Pith Number

pith:GXDR6EJ7

pith:2010:GXDR6EJ7OSR2V7BPCWDG5KIA36

not attested not anchored not stored refs pending

Revisit Short Term X-ray Spectral Variability of NGC 4151 with Chandra

2), (2) INAF-Arcetri Observatory, A. Zezas (1), G. Fabbiano (1), G. Risaliti (1, Italy), Junfeng Wang (1), M. Elvis (1), M. Karovska (1) ((1) Harvard-Smithsonian Center for Astrophysics

arxiv:1003.6133 v1 · 2010-03-31 · astro-ph.CO · astro-ph.HE

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

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	2026-05-18T02:08:15.337404Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

35c71f113f74a3aafc2f15866ea900df9a86a566fd11969694cd28e8e2de8de8

Aliases

arxiv: 1003.6133 · arxiv_version: 1003.6133v1 · doi: 10.48550/arxiv.1003.6133 · pith_short_12: GXDR6EJ7OSR2 · pith_short_16: GXDR6EJ7OSR2V7BP · pith_short_8: GXDR6EJ7

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/GXDR6EJ7OSR2V7BPCWDG5KIA36 \
  | 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: 35c71f113f74a3aafc2f15866ea900df9a86a566fd11969694cd28e8e2de8de8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fe09bcdf7e183569cebf0fd4cb710035e896e2161946ead77aee190533304cfb",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-03-31T20:00:00Z",
    "title_canon_sha256": "c9bddae034904cd146d93e6662b6d3d7483dc2b0e136ecdc27a382c9701b616d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1003.6133",
    "kind": "arxiv",
    "version": 1
  }
}