Pith Number

pith:IHW57FEE

pith:2009:IHW57FEE6IF6OSKQEZYYXQ5AVY

not attested not anchored not stored refs pending

AGN dust tori: the X-ray-infrared connection

ESA), Ivan Valtchanov (ESAC, Kirpal Nandra (Imperial College), Michael Rowan-Robinson (Imperial College)

arxiv:0905.4389 v2 · 2009-05-27 · 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{IHW57FEE6IF6OSKQEZYYXQ5AVY}

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	2026-05-18T04:37:34.140182Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

41eddf9484f20be7495026718bc3a0ae226101ccfb1b0019abff2d57a98d1d8a

Aliases

arxiv: 0905.4389 · arxiv_version: 0905.4389v2 · doi: 10.48550/arxiv.0905.4389 · pith_short_12: IHW57FEE6IF6 · pith_short_16: IHW57FEE6IF6OSKQ · pith_short_8: IHW57FEE

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/IHW57FEE6IF6OSKQEZYYXQ5AVY \
  | 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: 41eddf9484f20be7495026718bc3a0ae226101ccfb1b0019abff2d57a98d1d8a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "10abb997aee81c8da548eaf2b76170e04ae1ec8d47b9d99c3324601b8fd0e2fc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-05-27T11:58:44Z",
    "title_canon_sha256": "55d7a0f45ce6c72ba0ab3643d05c9cf06f1effc2868bfe7240efb344b32f516a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.4389",
    "kind": "arxiv",
    "version": 2
  }
}