Pith Number

pith:BHJTQXMZ

pith:2018:BHJTQXMZUODJ2E3YAGIZMQILAK

not attested not anchored not stored refs pending

Predicting the Neutral Hydrogen Content of Galaxies From Optical Data Using Machine Learning

Mika Rafieferantsoa, Romeel Dav\'e, Sambatra Andrianomena

arxiv:1803.08334 v1 · 2018-03-22 · 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{BHJTQXMZUODJ2E3YAGIZMQILAK}

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	2026-05-18T00:10:38.145683Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

09d3385d99a3869d1378019196410b02abf9d3413837903779ca14167f9bfc76

Aliases

arxiv: 1803.08334 · arxiv_version: 1803.08334v1 · doi: 10.48550/arxiv.1803.08334 · pith_short_12: BHJTQXMZUODJ · pith_short_16: BHJTQXMZUODJ2E3Y · pith_short_8: BHJTQXMZ

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/BHJTQXMZUODJ2E3YAGIZMQILAK \
  | 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: 09d3385d99a3869d1378019196410b02abf9d3413837903779ca14167f9bfc76

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "628d0df2732cc365b8c82712a7c42fcc015e1e199047c9b8cf3d6787efe52f0c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-03-22T13:01:01Z",
    "title_canon_sha256": "578ae3fedb7d766de9c16bcea6c59d3a56e023c86a94f923620a4765e95bfa3f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.08334",
    "kind": "arxiv",
    "version": 1
  }
}