Pith Number

pith:HAXDL2DP

pith:2017:HAXDL2DPMSBYZN6IETC4JLGXKF

not attested not anchored not stored refs pending

Neutral hydrogen (HI) gas content of galaxies at $z \approx 0.32$

Frank H. Briggs, Jayaram N. Chengalur, Jonghwan Rhee, Matthew Colless, Matthew L. N. Ashby, Olivier Le F\`evre, Philip Lah, Steven P. Willner

arxiv:1709.07596 v1 · 2017-09-22 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HAXDL2DPMSBYZN6IETC4JLGXKF}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T00:30:41.183006Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

382e35e86f64838cb7c824c5c4acd75161629cab312a0f773fda1ae5ab4cbb1b

Aliases

arxiv: 1709.07596 · arxiv_version: 1709.07596v1 · doi: 10.48550/arxiv.1709.07596 · pith_short_12: HAXDL2DPMSBY · pith_short_16: HAXDL2DPMSBYZN6I · pith_short_8: HAXDL2DP

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/HAXDL2DPMSBYZN6IETC4JLGXKF \
  | 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: 382e35e86f64838cb7c824c5c4acd75161629cab312a0f773fda1ae5ab4cbb1b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "82c726183f1d95582cf7abe5a9113bafd692c26220c457ccfd2a83c2ddbda24d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2017-09-22T05:06:50Z",
    "title_canon_sha256": "0c67637d7e9cbfdfefe482f6143ba405931021c9e0b7a5a5b89cb040caafc215"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.07596",
    "kind": "arxiv",
    "version": 1
  }
}