Pith Number

pith:LYG5V23E

pith:2012:LYG5V23EURS44EUNNPWGT32XUE

not attested not anchored not stored refs pending

The X-ray lightcurve of Sgr A* over the past 150 years inferred from Fe-Ka line reverberation in Galactic Centre molecular clouds

D. Porquet, P. Predehl, R. Capelli, R. S. Warwick, S. Gillessen

arxiv:1207.1436 v1 · 2012-07-05 · 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{LYG5V23EURS44EUNNPWGT32XUE}

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	2026-05-18T01:56:34.148256Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5e0ddaeb64a465ce128d6bec69ef57a1126191154b035daac2effe3064cf902d

Aliases

arxiv: 1207.1436 · arxiv_version: 1207.1436v1 · doi: 10.48550/arxiv.1207.1436 · pith_short_12: LYG5V23EURS4 · pith_short_16: LYG5V23EURS44EUN · pith_short_8: LYG5V23E

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/LYG5V23EURS44EUNNPWGT32XUE \
  | 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: 5e0ddaeb64a465ce128d6bec69ef57a1126191154b035daac2effe3064cf902d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "72b4d84f6dfb6c8d47e7c6afb1bd86406c577308fa3d92740bfcfa776178059b",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2012-07-05T20:00:03Z",
    "title_canon_sha256": "bd8ed5c4230dc0193b60509222a537b35e844abef4f09e72a3a20a8511201467"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.1436",
    "kind": "arxiv",
    "version": 1
  }
}