Pith Number

pith:MBFGPVKH

pith:2019:MBFGPVKHALTW2Z4RO3ZXBDLRXB

not attested not anchored not stored refs pending

The atomic Hydrogen content of the post-reionization Universe

Anna Zoldan, Gabriella De Lucia, Lizhi Xie, Marta Spinelli, Matteo Viel

arxiv:1909.02242 v1 · 2019-09-05 · astro-ph.CO · 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{MBFGPVKHALTW2Z4RO3ZXBDLRXB}

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.

Cited by

1 paper in Pith

Cosmology with HI Intensity Mapping

Receipt and verification

First computed	2026-07-05T00:46:48.480915Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

604a67d54702e76d679176f3708d71b8406dd1dfd2c76552f56cc6cfb79bb2ea

Aliases

arxiv: 1909.02242 · arxiv_version: 1909.02242v1 · doi: 10.48550/arxiv.1909.02242 · pith_short_12: MBFGPVKHALTW · pith_short_16: MBFGPVKHALTW2Z4R · pith_short_8: MBFGPVKH

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/MBFGPVKHALTW2Z4RO3ZXBDLRXB \
  | 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: 604a67d54702e76d679176f3708d71b8406dd1dfd2c76552f56cc6cfb79bb2ea

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8e371f796bf3eb2fa7134b77913a7cfb0be217ae4baaa7b5c77d0a60454e306b",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2019-09-05T07:20:59Z",
    "title_canon_sha256": "a8d96f1ff73ed73cee7c1f78aec2fefa5aa3bf5d18c9072cfd63cf77f689d448"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1909.02242",
    "kind": "arxiv",
    "version": 1
  }
}