Pith Number

pith:KF7TDBMH

pith:2012:KF7TDBMHLJ4T5QPQTN5QX7IPYV

not attested not anchored not stored refs pending

Detection of dark galaxies and circum-galactic filaments fluorescently illuminated by a quasar at z=2.4

Martin G. Haehnelt, Sebastiano Cantalupo, Simon J. Lilly

arxiv:1204.5753 v2 · 2012-04-25 · 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{KF7TDBMHLJ4T5QPQTN5QX7IPYV}

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	2026-05-18T01:57:44.187707Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

517f3185875a793ec1f09b7b0bfd0fc540b8f700b14be9e2d77f2d1e5a6262df

Aliases

arxiv: 1204.5753 · arxiv_version: 1204.5753v2 · doi: 10.48550/arxiv.1204.5753 · pith_short_12: KF7TDBMHLJ4T · pith_short_16: KF7TDBMHLJ4T5QPQ · pith_short_8: KF7TDBMH

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/KF7TDBMHLJ4T5QPQTN5QX7IPYV \
  | 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: 517f3185875a793ec1f09b7b0bfd0fc540b8f700b14be9e2d77f2d1e5a6262df

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9da0cbb13d05f826d01d22202458f8ca004af258e290845f3d194d0f71b30ab3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-04-25T20:00:13Z",
    "title_canon_sha256": "2149bf37170504e09cdbb9192d3c8999993346d91213d68fbe7444df0b3da6c7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.5753",
    "kind": "arxiv",
    "version": 2
  }
}