Pith Number

pith:VNF5FSUU

pith:2018:VNF5FSUU6LWTHOLWV2BRO53NTP

not attested not anchored not stored refs pending

Analysis of the Absorption Line Profile at 21 cm for the Hydrogen Atom in Interstellar Medium

D. Solovyev

arxiv:1805.01211 v2 · 2018-05-03 · physics.atom-ph · 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{VNF5FSUU6LWTHOLWV2BRO53NTP}

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	2026-05-18T00:01:43.490131Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ab4bd2ca94f2ed33b976ae8317776d9beefc4df4d4fbabea8a9235eac55aa937

Aliases

arxiv: 1805.01211 · arxiv_version: 1805.01211v2 · doi: 10.48550/arxiv.1805.01211 · pith_short_12: VNF5FSUU6LWT · pith_short_16: VNF5FSUU6LWTHOLW · pith_short_8: VNF5FSUU

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/VNF5FSUU6LWTHOLWV2BRO53NTP \
  | 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: ab4bd2ca94f2ed33b976ae8317776d9beefc4df4d4fbabea8a9235eac55aa937

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1521e94977583a8edbd49b9d7a7ff515a302c4ba874fe16b200e4cae870f6a0f",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.atom-ph",
    "submitted_at": "2018-05-03T10:37:04Z",
    "title_canon_sha256": "3e603dc4cdae67ec8f6d6ffeda2ba79492ba0064dfce6db5327fbc12cd8ed7af"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.01211",
    "kind": "arxiv",
    "version": 2
  }
}