Pith Number

pith:P3AJE2P2

pith:2011:P3AJE2P2RPIYKDOVMQJ6LATGUA

not attested not anchored not stored refs pending

Ultraluminous X-ray Sources in the Chandra and XMM-Newton Era

Hua Feng, Roberto Soria

arxiv:1109.1610 v2 · 2011-09-08 · astro-ph.HE · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{P3AJE2P2RPIYKDOVMQJ6LATGUA}

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	2026-05-18T02:00:38.098479Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7ec09269fa8bd1850dd56413e58266a00af3d51d6e7e7f4c1d7b58c653a1a542

Aliases

arxiv: 1109.1610 · arxiv_version: 1109.1610v2 · doi: 10.48550/arxiv.1109.1610 · pith_short_12: P3AJE2P2RPIY · pith_short_16: P3AJE2P2RPIYKDOV · pith_short_8: P3AJE2P2

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/P3AJE2P2RPIYKDOVMQJ6LATGUA \
  | 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: 7ec09269fa8bd1850dd56413e58266a00af3d51d6e7e7f4c1d7b58c653a1a542

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "499614034bc03e6b562890c61c508baeca850699b984a4089c95fa225d585ee6",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2011-09-08T01:26:46Z",
    "title_canon_sha256": "43bb9c286c3f8d08cc616840f16840f40ece210fcce9e1af237203ea54a1f62d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.1610",
    "kind": "arxiv",
    "version": 2
  }
}