Pith Number

pith:2GD7ED7J

pith:2014:2GD7ED7JJSHPPJLAFD2UBWV2CQ

not attested not anchored not stored refs pending

A new cosmological distance measure using AGN X-ray variability

2, 2), (2) INAF-OAR, (3) Max Planck Institute fur Extraterrestriche Physik, 4), (4) INFN-Roma Tre), Enzo Branchini (1, Fabio La Franca (1, Gabriele Ponti (3), Giorgio Matt (1) ((1) Universita` Roma Tre, Stefano Bianchi (1)

arxiv:1404.2607 v1 · 2014-04-09 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2GD7ED7JJSHPPJLAFD2UBWV2CQ}

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	2026-05-18T01:43:35.957607Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d187f20fe94c8ef7a56028f540daba1431b035a07cc8e79c2090a03d11710fe0

Aliases

arxiv: 1404.2607 · arxiv_version: 1404.2607v1 · doi: 10.48550/arxiv.1404.2607 · pith_short_12: 2GD7ED7JJSHP · pith_short_16: 2GD7ED7JJSHPPJLA · pith_short_8: 2GD7ED7J

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/2GD7ED7JJSHPPJLAFD2UBWV2CQ \
  | 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: d187f20fe94c8ef7a56028f540daba1431b035a07cc8e79c2090a03d11710fe0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8998059b1fef698fbeaabe2d4ee4bef1d36634b578dde4823b6ae1a2c6649fa8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2014-04-09T20:01:27Z",
    "title_canon_sha256": "d4b6d53b591cd814d31d2f2967aab71f5925893478af4a78c100c13c990d0349"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1404.2607",
    "kind": "arxiv",
    "version": 1
  }
}