Pith Number

pith:Q4547E6O

pith:2013:Q4547E6OX4SYVDGHXN4ZU2JLLO

not attested not anchored not stored refs pending

Characterization of Infrared Dark Clouds -- NH$_3$ Observations of an Absorption-contrast Selected IRDC Sample

C. M. Walmsley, F. Schuller, H. Beuther, H. Linz, K. M. Menten, L. Bronfman, R.-A. Chira

arxiv:1302.6774 v1 · 2013-02-27 · 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{Q4547E6OX4SYVDGHXN4ZU2JLLO}

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	2026-05-18T01:51:26.684714Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

873bcf93cebf258a8cc7bb799a692b5b8958c2bda312044ed425437459da2f88

Aliases

arxiv: 1302.6774 · arxiv_version: 1302.6774v1 · doi: 10.48550/arxiv.1302.6774 · pith_short_12: Q4547E6OX4SY · pith_short_16: Q4547E6OX4SYVDGH · pith_short_8: Q4547E6O

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/Q4547E6OX4SYVDGHXN4ZU2JLLO \
  | 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: 873bcf93cebf258a8cc7bb799a692b5b8958c2bda312044ed425437459da2f88

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "61cc77285d38e87d01d0043a8418c9bcad52f01200d3041c1935317e6de0ede6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2013-02-27T14:00:00Z",
    "title_canon_sha256": "f3abb69742fdde6911d00517cb263915bb9b64f1ed677fa2df553dd2c5f2c8f8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.6774",
    "kind": "arxiv",
    "version": 1
  }
}