Pith Number

pith:MFWDFGYI

pith:2013:MFWDFGYIV25UCYFUVJNWBX2CGA

not attested not anchored not stored refs pending

The spin temperature of high-redshift damped Lyman-$\alpha$ systems

10) ((1) National Centre for Radio Astrophysics (2) UCO/Lick Observatory (3) European Southern Observatory, (4) University of Victoria (5) Swinburne University of Technology (6) National Radio Astronomy Observatory (7) Australian National University (8) Naval Research Laboratory (9) Kapteyn Institute (10) ASTRON), A. G. de Bruyn (9, A. Smette (3), D. Jacobsen (4), E. Momjian (6), E. V. Ryan-Weber (5), F. H. Briggs (7), J. Grave (2), J. N. Chengalur (1), J. X. Prochaska (2), N. Kanekar (1), S. L. Ellison (4), T. Delafosse (2), W. M. Lane (8)

arxiv:1312.3640 v1 · 2013-12-12 · 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{MFWDFGYIV25UCYFUVJNWBX2CGA}

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	2026-05-18T01:45:51.021305Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

616c329b08aebb4160b4aa5b60df423039c975684166530279c6a60cfd356fa3

Aliases

arxiv: 1312.3640 · arxiv_version: 1312.3640v1 · doi: 10.48550/arxiv.1312.3640 · pith_short_12: MFWDFGYIV25U · pith_short_16: MFWDFGYIV25UCYFU · pith_short_8: MFWDFGYI

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/MFWDFGYIV25UCYFUVJNWBX2CGA \
  | 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: 616c329b08aebb4160b4aa5b60df423039c975684166530279c6a60cfd356fa3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b8be659e16fba090090df0344eda55308b18b74dce826e6ea527e2cbc3b479c1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-12-12T21:00:06Z",
    "title_canon_sha256": "9259f3b5997f4080a074e9d9323b9c366eb90999efb13cc324fc9efe44e98d3a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1312.3640",
    "kind": "arxiv",
    "version": 1
  }
}