Pith Number

pith:25S2VJIX

pith:2012:25S2VJIXFOWQ2FNM2YFB63ODRA

not attested not anchored not stored refs pending

A survey for HI in the distant Universe: the detection of associated 21-cm absorption at z=1.28

A. Tanna, E. M. Sadler, M. B. Pracy, M. T. Whiting, R. Athreya, S. J. Curran

arxiv:1212.2754 v2 · 2012-12-12 · 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{25S2VJIXFOWQ2FNM2YFB63ODRA}

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	2026-05-18T01:52:39.639946Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d765aaa5172bad0d15acd60a1f6dc38810f8e2470f3354e55b9b16f34677e7e3

Aliases

arxiv: 1212.2754 · arxiv_version: 1212.2754v2 · doi: 10.48550/arxiv.1212.2754 · pith_short_12: 25S2VJIXFOWQ · pith_short_16: 25S2VJIXFOWQ2FNM · pith_short_8: 25S2VJIX

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/25S2VJIXFOWQ2FNM2YFB63ODRA \
  | 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: d765aaa5172bad0d15acd60a1f6dc38810f8e2470f3354e55b9b16f34677e7e3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "35b3a2554f36e29a09142f4c5a5f8878a1f56aa927a5f0bdaf052ad24e228169",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-12-12T10:04:45Z",
    "title_canon_sha256": "824585b8b40f7689b84b625faec491dff7ee6432523da8a1ecd0f455d1d44406"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1212.2754",
    "kind": "arxiv",
    "version": 2
  }
}