Pith Number

pith:23TWXLM4

pith:2011:23TWXLM4LHKFPDF32NTHJLE3E2

not attested not anchored not stored refs pending

A study of six low redshift QSO pairs

A. Treves, E. P. Farina, R. Falomo

arxiv:1104.3577 v1 · 2011-04-18 · 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{23TWXLM4LHKFPDF32NTHJLE3E2}

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	2026-05-18T02:02:23.318927Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d6e76bad9c59d4578cbbd36674ac9b26a6148b215006d725c0e7d5733e0507fa

Aliases

arxiv: 1104.3577 · arxiv_version: 1104.3577v1 · doi: 10.48550/arxiv.1104.3577 · pith_short_12: 23TWXLM4LHKF · pith_short_16: 23TWXLM4LHKFPDF3 · pith_short_8: 23TWXLM4

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/23TWXLM4LHKFPDF32NTHJLE3E2 \
  | 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: d6e76bad9c59d4578cbbd36674ac9b26a6148b215006d725c0e7d5733e0507fa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1a2cc3e772275dd445e0265c74caabab9713f9b9c86cf88c2db3990135989f79",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-04-18T20:00:14Z",
    "title_canon_sha256": "48b937b4196eaa6384fd6d2153c3efa20e81f0c9b54b556a234f7acdba200f36"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.3577",
    "kind": "arxiv",
    "version": 1
  }
}