Pith Number

pith:QMDUHIAR

pith:2015:QMDUHIARMVTFOVG6CRNV67EO25

not attested not anchored not stored refs pending

Cold parsec-scale gas in a zabs~0.1 sub-DLA with disparate H2 and 21-cm absorption

E. Momjian, J. Charlton, N. Gupta, R. Dutta, R. Srianand, S. Muzahid

arxiv:1502.01354 v1 · 2015-02-04 · astro-ph.GA · astro-ph.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QMDUHIARMVTFOVG6CRNV67EO25}

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	2026-05-18T01:41:04.767367Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

830743a01165665754de145b5f7c8ed752ab6852937ef0f5d6784798fe94ee84

Aliases

arxiv: 1502.01354 · arxiv_version: 1502.01354v1 · doi: 10.48550/arxiv.1502.01354 · pith_short_12: QMDUHIARMVTF · pith_short_16: QMDUHIARMVTFOVG6 · pith_short_8: QMDUHIAR

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/QMDUHIARMVTFOVG6CRNV67EO25 \
  | 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: 830743a01165665754de145b5f7c8ed752ab6852937ef0f5d6784798fe94ee84

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d798028e6fa87e45f4dbe50d47958deeea5222cfdf5137372ebc4c993550c8ea",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-02-04T21:00:15Z",
    "title_canon_sha256": "c20d9bdfb2c941e1a28735a43747b1248ee8018d499d03348e20d538925f56e0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.01354",
    "kind": "arxiv",
    "version": 1
  }
}