Pith Number

pith:URUHMZFD

pith:2021:URUHMZFDKRPFD7Z3YY4VAVRML7

not attested not anchored not stored refs pending

Census of High- and Medium-mass Protostars V. CO Abundance and the Galactic $X_{\text{CO}}$ Factor

(2) Space Science Institute, 3) ((1) Niels Bohr Institute, (3) University of New England, Armidale, Australia), Peter J. Barnes (2, Rebecca L. Pitts (1)

arxiv:2106.02047 v1 · 2021-06-03 · 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{URUHMZFDKRPFD7Z3YY4VAVRML7}

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	2026-07-05T03:08:31.755271Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a4687664a3545e51ff3bc63950562c5fea3436456f7c404e14c014a3e1d79566

Aliases

arxiv: 2106.02047 · arxiv_version: 2106.02047v1 · doi: 10.48550/arxiv.2106.02047 · pith_short_12: URUHMZFDKRPF · pith_short_16: URUHMZFDKRPFD7Z3 · pith_short_8: URUHMZFD

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/URUHMZFDKRPFD7Z3YY4VAVRML7 \
  | 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: a4687664a3545e51ff3bc63950562c5fea3436456f7c404e14c014a3e1d79566

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1dce4c639390f306f23f97467954d522c578f2d806fd488895d436fef39ea059",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-06-03T18:00:01Z",
    "title_canon_sha256": "827110ce567f357b2bd1c46df0b69cb70e3bf7bc26bb8146e475eee8ae2f5bee"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2106.02047",
    "kind": "arxiv",
    "version": 1
  }
}