Pith Number

pith:HM42MMC2

pith:2013:HM42MMC2VUTH7VJWI3Q6SUIVE3

not attested not anchored not stored refs pending

The Magellan Uniform Survey of Damped Lyman alpha Systems I: Cosmic Metallicity Evolution

Hawaii), Michael T. Murphy, Regina A. Jorgenson (IfA, Rodger Thompson

arxiv:1307.4429 v1 · 2013-07-16 · 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{HM42MMC2VUTH7VJWI3Q6SUIVE3}

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	2026-05-18T01:48:49.403242Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3b39a6305aad267fd53646e1e9511526c1c8521713f4b9a0af3cfe36bf569e98

Aliases

arxiv: 1307.4429 · arxiv_version: 1307.4429v1 · doi: 10.48550/arxiv.1307.4429 · pith_short_12: HM42MMC2VUTH · pith_short_16: HM42MMC2VUTH7VJW · pith_short_8: HM42MMC2

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/HM42MMC2VUTH7VJWI3Q6SUIVE3 \
  | 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: 3b39a6305aad267fd53646e1e9511526c1c8521713f4b9a0af3cfe36bf569e98

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "74e82b6036950c964a599b8bab1c1cbb16336493760f1b4953d59023f176a4f8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-07-16T21:24:39Z",
    "title_canon_sha256": "b2eb2f625b4d896d1c6b6d0dbcf5c86000cbd7bd0260b5f7111fdc94df684292"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.4429",
    "kind": "arxiv",
    "version": 1
  }
}