Pith Number

pith:YQPPZJLC

pith:2025:YQPPZJLCUXXEASWC64DW5Z6TNI

not attested not anchored not stored refs pending

Hunting pre-stellar cores with APEX: Corona Australis 151, the densest pre-stellar core or the youngest protostar?

A. Belloche, D. Arzoumanian, E. Redaelli, F. Wyrowski, J. E. Pineda, J. Harju, O. Sipil\"a, P. Caselli, S. Spezzano

arxiv:2502.13745 v1 · 2025-02-19 · 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{YQPPZJLCUXXEASWC64DW5Z6TNI}

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	2026-07-05T10:52:19.885092Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c41efca562a5ee404ac2f7076ee7d36a3f37a918efae9f0620e6c887675324cb

Aliases

arxiv: 2502.13745 · arxiv_version: 2502.13745v1 · doi: 10.48550/arxiv.2502.13745 · pith_short_12: YQPPZJLCUXXE · pith_short_16: YQPPZJLCUXXEASWC · pith_short_8: YQPPZJLC

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/YQPPZJLCUXXEASWC64DW5Z6TNI \
  | 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: c41efca562a5ee404ac2f7076ee7d36a3f37a918efae9f0620e6c887675324cb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c6b247c31f27c34277a3551045b3b67d241d08a85a90d12abf2bdc45ba57aebe",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2025-02-19T14:08:43Z",
    "title_canon_sha256": "07563288edc8b2ae5f8d662bf2fcecd11bc2f5f17bd8e41ae2e87dc0788b7f4c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2502.13745",
    "kind": "arxiv",
    "version": 1
  }
}