Pith Number

pith:ZF6YZ4RH

pith:2019:ZF6YZ4RHB2VEJ456PWCCXUMNH7

not attested not anchored not stored refs pending

Line Ratios Reveal N2H+ Emission Originates Above the Midplane in TW Hydrae

Edwin A. Bergin (University of Michigan), Kamber R. Schwarz (University of Arizona), Richard Teague (University of Michigan)

arxiv:1904.09303 v1 · 2019-04-19 · astro-ph.EP · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZF6YZ4RHB2VEJ456PWCCXUMNH7}

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	2026-05-17T23:46:46.920561Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c97d8cf2270eaa44f3be7d842bd18d3ff1f472c6b90d8581035c9caf4301d1fc

Aliases

arxiv: 1904.09303 · arxiv_version: 1904.09303v1 · doi: 10.48550/arxiv.1904.09303 · pith_short_12: ZF6YZ4RHB2VE · pith_short_16: ZF6YZ4RHB2VEJ456 · pith_short_8: ZF6YZ4RH

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/ZF6YZ4RHB2VEJ456PWCCXUMNH7 \
  | 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: c97d8cf2270eaa44f3be7d842bd18d3ff1f472c6b90d8581035c9caf4301d1fc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d4a952400fcdfb19a9250e92e5e3ca9626012def6b6fb7b839ff508b1f0c5b60",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2019-04-19T18:02:54Z",
    "title_canon_sha256": "47a932c284bfd9192d29dd7f4373c34ebe265bae7a7872867335f729d7fb16e1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.09303",
    "kind": "arxiv",
    "version": 1
  }
}