Pith Number

pith:KNH7XWC4

pith:2013:KNH7XWC4ZSWFTHAZWDNOT3GBX2

not attested not anchored not stored refs pending

The X-ray/UV absorber in NGC 4593

C. P. de Vries, E. Costantini, G. A. Kriss, J. Ebrero, J. S. Kaastra

arxiv:1308.1555 v1 · 2013-08-07 · astro-ph.HE · 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{KNH7XWC4ZSWFTHAZWDNOT3GBX2}

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	2026-05-18T01:48:22.730394Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

534ffbd85cccac599c19b0dae9ecc1beb80f922127cca1763069f14e2d194ef8

Aliases

arxiv: 1308.1555 · arxiv_version: 1308.1555v1 · doi: 10.48550/arxiv.1308.1555 · pith_short_12: KNH7XWC4ZSWF · pith_short_16: KNH7XWC4ZSWFTHAZ · pith_short_8: KNH7XWC4

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/KNH7XWC4ZSWFTHAZWDNOT3GBX2 \
  | 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: 534ffbd85cccac599c19b0dae9ecc1beb80f922127cca1763069f14e2d194ef8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "98b73ecc7a7f7c8e847fc8508edb55faffa53ef7c226e9d75b13b5f1bbf4bed9",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2013-08-07T12:55:05Z",
    "title_canon_sha256": "34cf5647a547142b1045e8fd8242cf69c24f304b9c120c0a509b3aed71ca3191"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.1555",
    "kind": "arxiv",
    "version": 1
  }
}