Pith Number

pith:FHFQX2DW

pith:2010:FHFQX2DW4Y2RGC5I7DZSMZYKXP

not attested not anchored not stored refs pending

Active galaxy unification in the era of X-ray polarimetry

A. Dorodnitsyn, T. Kallman

arxiv:1001.5021 v2 · 2010-01-27 · astro-ph.GA · 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{FHFQX2DW4Y2RGC5I7DZSMZYKXP}

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	2026-05-18T02:09:29.109493Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

29cb0be876e635130ba8f8f326670abbd3ca3d2e3808465f5657fb3dda74c0f4

Aliases

arxiv: 1001.5021 · arxiv_version: 1001.5021v2 · doi: 10.48550/arxiv.1001.5021 · pith_short_12: FHFQX2DW4Y2R · pith_short_16: FHFQX2DW4Y2RGC5I · pith_short_8: FHFQX2DW

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/FHFQX2DW4Y2RGC5I7DZSMZYKXP \
  | 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: 29cb0be876e635130ba8f8f326670abbd3ca3d2e3808465f5657fb3dda74c0f4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7aa00860c081ba41173e109e73c1fea0e4d2404215345b07de22bfb7637c8830",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2010-01-27T20:49:11Z",
    "title_canon_sha256": "b8c9b480325555016be426127885c4f07246b691af53fc854c16f02ea11cf0fd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1001.5021",
    "kind": "arxiv",
    "version": 2
  }
}