Pith Number

pith:N3KBF3V6

pith:2010:N3KBF3V6I664P57QCMXRPPYWDR

not attested not anchored not stored refs pending

A Tidal Disruption Flare in Abell 1689 from an Archival X-ray Survey of Galaxy Clusters

(2) Penn State), Melville P. Ulmer (1), Michael Eracleous (2) ((1) Northwestern U., Peter Maksym (1)

arxiv:1008.4140 v1 · 2010-08-24 · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{N3KBF3V6I664P57QCMXRPPYWDR}

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	2026-05-18T04:35:48.823938Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6ed412eebe47bdc7f7f0132f17bf161c6a6f95be40749058f917a928a0cf7772

Aliases

arxiv: 1008.4140 · arxiv_version: 1008.4140v1 · doi: 10.48550/arxiv.1008.4140 · pith_short_12: N3KBF3V6I664 · pith_short_16: N3KBF3V6I664P57Q · pith_short_8: N3KBF3V6

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/N3KBF3V6I664P57QCMXRPPYWDR \
  | 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: 6ed412eebe47bdc7f7f0132f17bf161c6a6f95be40749058f917a928a0cf7772

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0a325d639d762530e0f431a72c675115cba8f1fe45acd215198eb8352cee15f0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2010-08-24T20:01:49Z",
    "title_canon_sha256": "0603420f10dc84afbb4aa3c4ed0ddb9e6ec4023b2e52c08d93e455e32851a1f8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1008.4140",
    "kind": "arxiv",
    "version": 1
  }
}