Pith Number

pith:H435APL6

pith:2012:H435APL6CFEIW6Y3I4OEMMASGT

not attested not anchored not stored refs pending

Molecular hydrogen in Lyman Alpha Emitters

Andrea Ferrara, Livia Vallini, Pratika Dayal

arxiv:1201.3630 v1 · 2012-01-17 · 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{H435APL6CFEIW6Y3I4OEMMASGT}

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	2026-05-18T01:58:47.855910Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3f37d03d7e11488b7b1b471c46301234d06e780b2a4adf10858c7dadfef63ba6

Aliases

arxiv: 1201.3630 · arxiv_version: 1201.3630v1 · doi: 10.48550/arxiv.1201.3630 · pith_short_12: H435APL6CFEI · pith_short_16: H435APL6CFEIW6Y3 · pith_short_8: H435APL6

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/H435APL6CFEIW6Y3I4OEMMASGT \
  | 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: 3f37d03d7e11488b7b1b471c46301234d06e780b2a4adf10858c7dadfef63ba6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bd81853cc2dd8967154f67d00282d06a8a4c8678a501ad0e3b9b68410166010d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-01-17T21:05:20Z",
    "title_canon_sha256": "d31b41400f2b8fcf14ee139fe3d6f81b9d1bb217f3ddd24d5d8e752c91876125"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.3630",
    "kind": "arxiv",
    "version": 1
  }
}