Pith Number

pith:YYQTJQDU

pith:2020:YYQTJQDU3JDMHQVIJRQV33WZB3

not attested not anchored not stored refs pending

Star Formation Occurs in Dense Gas, but What Does "Dense" Mean?

Jens Kauffmann, Jingwen Wu, Kee-Tae Kim, Mark Heyer, Neal J. Evans II, Quang Nguyen-Luong, Tie Liu, Zhang Chao

arxiv:2004.06631 v1 · 2020-04-14 · 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{YYQTJQDU3JDMHQVIJRQV33WZB3}

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	2026-07-05T01:04:22.763638Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c62134c074da46c3c2a84c615deed90efe11502db60cd20c6b2f623bccff0535

Aliases

arxiv: 2004.06631 · arxiv_version: 2004.06631v1 · doi: 10.48550/arxiv.2004.06631 · pith_short_12: YYQTJQDU3JDM · pith_short_16: YYQTJQDU3JDMHQVI · pith_short_8: YYQTJQDU

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/YYQTJQDU3JDMHQVIJRQV33WZB3 \
  | 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: c62134c074da46c3c2a84c615deed90efe11502db60cd20c6b2f623bccff0535

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8ce3b7f82510c50e7fd205e2ce4b31b59f77f565d65b3f0adfe116c7de3b7ec9",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/publicdomain/zero/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2020-04-14T16:22:33Z",
    "title_canon_sha256": "2b2493faee0e8fde0ce18f00ea351566e9703a3afbdace7d6fbcbda142890fc4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2004.06631",
    "kind": "arxiv",
    "version": 1
  }
}