Pith Number

pith:QM27YB4C

pith:2021:QM27YB4C4TRPVCYXW2GNX6AKPV

not attested not anchored not stored refs pending

Imaging the water snowline around protostars with water and HCO$^+$ isotopologues

Daniel Harsono, Edwin A. Bergin, Ewine F. van Dishoeck, Jes K. J{\o}rgensen, John J. Tobin, Martijn L. van Gelder, Merel L.R. van 't Hoff, Naomi Hirano, Sigurd S. Jensen, Tien-Hao Hsieh

arxiv:2110.08286 v1 · 2021-10-15 · astro-ph.GA · 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{QM27YB4C4TRPVCYXW2GNX6AKPV}

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	2026-07-05T03:23:15.990792Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8335fc0782e4e2fa8b17b68cdbf80a7d5188ac21ca01c7a94c4ba4b61eec8587

Aliases

arxiv: 2110.08286 · arxiv_version: 2110.08286v1 · doi: 10.48550/arxiv.2110.08286 · pith_short_12: QM27YB4C4TRP · pith_short_16: QM27YB4C4TRPVCYX · pith_short_8: QM27YB4C

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/QM27YB4C4TRPVCYXW2GNX6AKPV \
  | 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: 8335fc0782e4e2fa8b17b68cdbf80a7d5188ac21ca01c7a94c4ba4b61eec8587

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bec4072041e7025ecb4d4cf29d7de368cfd45fad538a5a77b3c2288a4aa73eb7",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-10-15T18:00:07Z",
    "title_canon_sha256": "feb68c1444113910f128a551bbd9ee1b576923a4ebb5162576a40b7ee495e710"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2110.08286",
    "kind": "arxiv",
    "version": 1
  }
}