Pith Number

pith:P7MHGA5O

pith:2010:P7MHGA5OY7ZKQV5UX6KEIVSPMP

not attested not anchored not stored refs pending

Chandra monitoring of UGC 4203: the structure of the X-ray absorber

G. Matt, G. Risaliti, M. Elvis, S. Bianchi

arxiv:1005.3052 v2 · 2010-05-17 · 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{P7MHGA5OY7ZKQV5UX6KEIVSPMP}

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	2026-05-18T02:07:17.961341Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7fd87303aec7f2a857b4bf9444564f63ec6f352a98d20db3be3c81654f20bbb1

Aliases

arxiv: 1005.3052 · arxiv_version: 1005.3052v2 · doi: 10.48550/arxiv.1005.3052 · pith_short_12: P7MHGA5OY7ZK · pith_short_16: P7MHGA5OY7ZKQV5U · pith_short_8: P7MHGA5O

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/P7MHGA5OY7ZKQV5UX6KEIVSPMP \
  | 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: 7fd87303aec7f2a857b4bf9444564f63ec6f352a98d20db3be3c81654f20bbb1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f069d9e42afe5eb57ee09dbdc791a84dad1abba579f7740a26e3814a638eca41",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-05-17T21:28:28Z",
    "title_canon_sha256": "f654c44c46e04a759798c71d6af25070f62955f44234dd0d2792f726219758fb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1005.3052",
    "kind": "arxiv",
    "version": 2
  }
}