Pith Number

pith:E26SLUM3

pith:2021:E26SLUM37JN7TQGN76JBM7PBI2

not attested not anchored not stored refs pending

Chemical analysis of prestellar cores in Ophiuchus yields short timescales and rapid collapse

Alessandro Lupi, Andrea Giannetti, Dominik R. G. Schleicher, Friedrich Wyrowski, Giovanni Sabatini, Karl M. Menten, Stefano Bovino

arxiv:2105.02253 v2 · 2021-05-05 · 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{E26SLUM37JN7TQGN76JBM7PBI2}

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	2026-07-05T03:21:48.088264Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

26bd25d19bfa5bf9c0cdff92167de14695f587083dc755b62dfb161019811745

Aliases

arxiv: 2105.02253 · arxiv_version: 2105.02253v2 · doi: 10.48550/arxiv.2105.02253 · pith_short_12: E26SLUM37JN7 · pith_short_16: E26SLUM37JN7TQGN · pith_short_8: E26SLUM3

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/E26SLUM37JN7TQGN76JBM7PBI2 \
  | 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: 26bd25d19bfa5bf9c0cdff92167de14695f587083dc755b62dfb161019811745

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "28873c403e7c5b8b7af3849e868c09bb19cb786b31a600746a90b0516b3206d4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-05-05T18:00:44Z",
    "title_canon_sha256": "8e00f135a060f1acad51ad877bdb06f236cb4c96a8f7bca49e4512cf4162cb9f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2105.02253",
    "kind": "arxiv",
    "version": 2
  }
}