Pith Number

pith:XXOHIX7U

pith:2020:XXOHIX7U22TIVPYD4HBLDEU6C2

not attested not anchored not stored refs pending

Discovery of a damped Ly$\alpha$ galaxy at z $\sim$ 3 towards the quasar SDSS J011852+040644

D. Christopher Martin, Linhua Jiang, Luis C. Ho, Marc Rafelski, Michele Fumagalli, Pasquier Noterdaeme, Patrick Petitjean, Qiong Li, Raghunathan Srianand, Ravi Joshi, Ruari Mackenzie, Siwei Zou, Xue-Bing Wu, Zheng Cai

arxiv:2012.07422 v1 · 2020-12-14 · 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{XXOHIX7U22TIVPYD4HBLDEU6C2}

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	2026-07-05T02:17:45.098358Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bddc745ff4d6a68abf03e1c2b1929e16b457656878734f3245b4df315a264447

Aliases

arxiv: 2012.07422 · arxiv_version: 2012.07422v1 · doi: 10.48550/arxiv.2012.07422 · pith_short_12: XXOHIX7U22TI · pith_short_16: XXOHIX7U22TIVPYD · pith_short_8: XXOHIX7U

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/XXOHIX7U22TIVPYD4HBLDEU6C2 \
  | 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: bddc745ff4d6a68abf03e1c2b1929e16b457656878734f3245b4df315a264447

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "38642e34a6043caecdc865e3924f30c71ee0d85ff2131d59060af3f1ea4bb36e",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2020-12-14T11:17:15Z",
    "title_canon_sha256": "1cab5c096766e814ff0ddb7ef07a4ca392a7c75cb8c5de08275f328b01495fa6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2012.07422",
    "kind": "arxiv",
    "version": 1
  }
}