Pith Number

pith:GVO6HAUS

pith:2020:GVO6HAUSH7B7KBHNVIHXWVGNJR

not attested not anchored not stored refs pending

Detecting neutral hydrogen at z > 3 in large spectroscopic surveys of quasars

Laura Thomson, Michele Fumagalli (Milano-Bicocca), Sotiria Fotopoulou

arxiv:2009.03322 v1 · 2020-09-07 · astro-ph.GA · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{GVO6HAUSH7B7KBHNVIHXWVGNJR}

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	2026-07-05T01:33:45.846991Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

355de382923fc3f504edaa0f7b54cd4c4cc3802acfb5a237b6ae83ca800124d1

Aliases

arxiv: 2009.03322 · arxiv_version: 2009.03322v1 · doi: 10.48550/arxiv.2009.03322 · pith_short_12: GVO6HAUSH7B7 · pith_short_16: GVO6HAUSH7B7KBHN · pith_short_8: GVO6HAUS

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/GVO6HAUSH7B7KBHNVIHXWVGNJR \
  | 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: 355de382923fc3f504edaa0f7b54cd4c4cc3802acfb5a237b6ae83ca800124d1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "978faeab4479bdc74b179dbf264d837ceac0893dff7a907c3b1085e0e9b10d1c",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2020-09-07T18:00:02Z",
    "title_canon_sha256": "6b843c8342fe8b3c0ab06688bb7772a582e31a18f7d8723e6d7e4e25bebf70ac"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2009.03322",
    "kind": "arxiv",
    "version": 1
  }
}