Pith Number

pith:NOGKHRHW

pith:2015:NOGKHRHW4UE3IACLNGG4OLRNQF

not attested not anchored not stored refs pending

On the relation of optical obscuration and X-ray absorption in Seyfert galaxies

A. Contursi, A. Schnorr-Mueller, A. Sternberg, C. Ricci, D. J. Rosario, D. Lutz, E. Sturm, G. Orban de Xivry, H. Netzer, J. Gracia-Carpio, L. Burtscher, L. J. Tacconi, M. J. Koss, M.-Y. Lin, P. Nandra, R. Genzel, R. I. Davies, S. Veilleux

arxiv:1511.05566 v2 · 2015-11-17 · astro-ph.GA

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

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	2026-05-18T01:21:51.795814Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6b8ca3c4f6e509b4004b698dc72e2d81780a691119abbc8df159227ee8271042

Aliases

arxiv: 1511.05566 · arxiv_version: 1511.05566v2 · doi: 10.48550/arxiv.1511.05566 · pith_short_12: NOGKHRHW4UE3 · pith_short_16: NOGKHRHW4UE3IACL · pith_short_8: NOGKHRHW

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/NOGKHRHW4UE3IACLNGG4OLRNQF \
  | 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: 6b8ca3c4f6e509b4004b698dc72e2d81780a691119abbc8df159227ee8271042

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8ea2b8ea0579a9fde70494409bc3a19d6619926f7c2a06f03d0a9b037ba483f0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-11-17T21:00:04Z",
    "title_canon_sha256": "19b966f30d1e2d647a23eb8d500d2f76de8b7630afd6bcf33e2145853ec57e7a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1511.05566",
    "kind": "arxiv",
    "version": 2
  }
}