Pith Number

pith:WJ7LKQZY

pith:2011:WJ7LKQZYG4ISWRLOX5JX4QOB5O

not attested not anchored not stored refs pending

Optical counterpart of HLX-1 during the 2010 outburst

Albert Kong (National Tsing Hua University), George Hau (ESO), Jeanette Gladstone (University of Alberta), Pasi Hakala (FINCA), Roberto Soria (ICRAR)

arxiv:1111.6783 v2 · 2011-11-29 · 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{WJ7LKQZYG4ISWRLOX5JX4QOB5O}

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	2026-05-18T01:59:22.077397Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b27eb5433837112b456ebf537e41c1ebb0ac16b9d3ef341591097df0ca8420a8

Aliases

arxiv: 1111.6783 · arxiv_version: 1111.6783v2 · doi: 10.48550/arxiv.1111.6783 · pith_short_12: WJ7LKQZYG4IS · pith_short_16: WJ7LKQZYG4ISWRLO · pith_short_8: WJ7LKQZY

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/WJ7LKQZYG4ISWRLOX5JX4QOB5O \
  | 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: b27eb5433837112b456ebf537e41c1ebb0ac16b9d3ef341591097df0ca8420a8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "41a3899b34a4545f44f3307f2e4e5064dbb40bea919ece4cb2d7e0e26ed7755d",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2011-11-29T12:09:56Z",
    "title_canon_sha256": "a6d2b5ddfe41810fecf44c7130a5caecd888e0292d5a71867c4f7aebb5954d05"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.6783",
    "kind": "arxiv",
    "version": 2
  }
}