Pith Number

pith:42LPH27L

pith:2019:42LPH27L32ZHPOR3QXSPYFVETX

not attested not anchored not stored refs pending

A Search for Intrinsic HI 21 cm and OH 18 cm Absorption Toward Compact Radio Sources

Adam K. Leroy, Alberto Bolatto, Jeremy Darling, John T. Stocke, Kathryn Grasha

arxiv:1909.12422 v1 · 2019-09-26 · 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{42LPH27L32ZHPOR3QXSPYFVETX}

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	2026-07-05T00:22:04.653459Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e696f3ebebdeb277ba3b85e4fc16a49dfce90c449b802133cdeba9d9e5e8a6d3

Aliases

arxiv: 1909.12422 · arxiv_version: 1909.12422v1 · doi: 10.48550/arxiv.1909.12422 · pith_short_12: 42LPH27L32ZH · pith_short_16: 42LPH27L32ZHPOR3 · pith_short_8: 42LPH27L

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/42LPH27L32ZHPOR3QXSPYFVETX \
  | 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: e696f3ebebdeb277ba3b85e4fc16a49dfce90c449b802133cdeba9d9e5e8a6d3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "084811be8951f4248ff623e4c035d7c526ea3732f59a811da48a3269e6f4511b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-09-26T22:38:52Z",
    "title_canon_sha256": "bf9d31267092692f3e3ea75da96da6b7f1a461b8aa239537c20bc95f84ea69f7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1909.12422",
    "kind": "arxiv",
    "version": 1
  }
}