Pith Number

pith:MJ7MOGJ4

pith:2019:MJ7MOGJ4HNFZGM424IQYEZQLKY

not attested not anchored not stored refs pending

The Structure of Dark Molecular Gas in the Galaxy -- II. Physical State of "CO-Dark" Gas in the Perseus Arm

David A. Neufeld, David E. Hogg, Mark G. Wolfire, Michael P. Busch, Philip D. Engelke, Ronald J. Allen

arxiv:1908.04829 v1 · 2019-08-13 · 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{MJ7MOGJ4HNFZGM424IQYEZQLKY}

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	2026-07-05T00:10:41.812809Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

627ec7193c3b4b93339ae22182660b563490195f4f8f2996dc5a6f83797c67e7

Aliases

arxiv: 1908.04829 · arxiv_version: 1908.04829v1 · doi: 10.48550/arxiv.1908.04829 · pith_short_12: MJ7MOGJ4HNFZ · pith_short_16: MJ7MOGJ4HNFZGM42 · pith_short_8: MJ7MOGJ4

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/MJ7MOGJ4HNFZGM424IQYEZQLKY \
  | 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: 627ec7193c3b4b93339ae22182660b563490195f4f8f2996dc5a6f83797c67e7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "987067517f7ab5ee7ba3e1ff33b327bc6529b49f423c2ed06f6c6891f73a9be2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-08-13T19:06:48Z",
    "title_canon_sha256": "ea19f8dd9fe042ce169cbd8a872e1e7a33b52dac5de46d01babeac5a568697ed"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.04829",
    "kind": "arxiv",
    "version": 1
  }
}