Pith Number

pith:AJXGNNMK

pith:2012:AJXGNNMKKSTZNBWFT7V75W27QS

not attested not anchored not stored refs pending

Short Timescale AGN X-ray Variability with EXOSAT: Black hole mass and Normalised Variability Amplitude

I. M. McHardy

arxiv:1212.2854 v1 · 2012-12-12 · 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{AJXGNNMKKSTZNBWFT7V75W27QS}

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	2026-05-18T01:52:39.520942Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

026e66b58a54a79686c59febfedb5f8492d0031fadac4f438ed95d083121110f

Aliases

arxiv: 1212.2854 · arxiv_version: 1212.2854v1 · doi: 10.48550/arxiv.1212.2854 · pith_short_12: AJXGNNMKKSTZ · pith_short_16: AJXGNNMKKSTZNBWF · pith_short_8: AJXGNNMK

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/AJXGNNMKKSTZNBWFT7V75W27QS \
  | 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: 026e66b58a54a79686c59febfedb5f8492d0031fadac4f438ed95d083121110f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fc64c19ec1ca75ddba632fde3a33a3ea61165a4d73476737dfbb08c3230da2e7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2012-12-12T16:00:41Z",
    "title_canon_sha256": "44f7f9c410d9a8822b90bccfd4d34e23d8bd74e853d3601013c444e61b70cce8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1212.2854",
    "kind": "arxiv",
    "version": 1
  }
}