Pith Number

pith:OBHFA2FA

pith:2019:OBHFA2FAUZK6TRWCASUOAJNQ42

not attested not anchored not stored refs pending

ALMA observations of water deuteration: A physical diagnostic of the formation of protostars

A. Coutens, D. Harsono, E. F. van Dishoeck, J. K. J{\o}rgensen, K. Furuya, L. E. Kristensen, M. V. Persson, S. S. Jensen

arxiv:1909.10533 v1 · 2019-09-23 · astro-ph.SR · 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{OBHFA2FAUZK6TRWCASUOAJNQ42}

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	2026-07-05T00:12:08.623864Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

704e5068a0a655e9c6c204a8e025b0e68d60df79cb4fb8710c80c1956191c3c9

Aliases

arxiv: 1909.10533 · arxiv_version: 1909.10533v1 · doi: 10.48550/arxiv.1909.10533 · pith_short_12: OBHFA2FAUZK6 · pith_short_16: OBHFA2FAUZK6TRWC · pith_short_8: OBHFA2FA

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/OBHFA2FAUZK6TRWCASUOAJNQ42 \
  | 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: 704e5068a0a655e9c6c204a8e025b0e68d60df79cb4fb8710c80c1956191c3c9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b6fda355e5be4e34695a96c7486721489695537edc6b3017995d0e03c099b3b7",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2019-09-23T18:00:04Z",
    "title_canon_sha256": "5d65bcd29e8a64f5b1d35a3e4b1559ec8a824c9b5627848b1fac7102d765677a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1909.10533",
    "kind": "arxiv",
    "version": 1
  }
}