Pith Number

pith:MFHSNNK4

pith:2013:MFHSNNK4R4Y4NDCYWWZDHVMWRR

not attested not anchored not stored refs pending

HST/COS observations of a new population of associated QSO absorbers

Anand Narayanan (IIST, Blair D Savage (Wisconsin, Madison), Nahum Arav (Virginia Tech), Raghunathan Srianand (IUCAA), Sowgat Muzahid (IUCAA), Thiruvananthapuram)

arxiv:1302.5510 v1 · 2013-02-22 · 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{MFHSNNK4R4Y4NDCYWWZDHVMWRR}

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	2026-05-18T03:27:00.928953Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

614f26b55c8f31c68c58b5b233d5968c73187161289f7cb90f3af2420742de06

Aliases

arxiv: 1302.5510 · arxiv_version: 1302.5510v1 · doi: 10.48550/arxiv.1302.5510 · pith_short_12: MFHSNNK4R4Y4 · pith_short_16: MFHSNNK4R4Y4NDCY · pith_short_8: MFHSNNK4

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/MFHSNNK4R4Y4NDCYWWZDHVMWRR \
  | 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: 614f26b55c8f31c68c58b5b233d5968c73187161289f7cb90f3af2420742de06

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f38ab42e2843c7717b76cc4f1113585e537062e9208cb5945637fa5df4148963",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-02-22T08:02:35Z",
    "title_canon_sha256": "31d192847f30b850e879fa389f10f34eaa049eeb9f89ca51b526851c7b241ba9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.5510",
    "kind": "arxiv",
    "version": 1
  }
}