Pith Number

pith:34WBMDWP

pith:2005:34WBMDWPN3QL6ENBCV4CXF2JQQ

not attested not anchored not stored refs pending

Molecular Hydrogen in the Damped Ly alpha Absorber of Q1331+170

David M. Meyer, Jian Ge, Jill Bechtold, Jun Cui

arxiv:astro-ph/0506766 v1 · 2005-06-30 · astro-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{34WBMDWPN3QL6ENBCV4CXF2JQQ}

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	2026-07-04T17:15:42.138706Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

df2c160ecf6ee0bf11a115782b974984079561188fda10f9728ac81104b054d7

Aliases

arxiv: astro-ph/0506766 · arxiv_version: astro-ph/0506766v1 · doi: 10.48550/arxiv.astro-ph/0506766 · pith_short_12: 34WBMDWPN3QL · pith_short_16: 34WBMDWPN3QL6ENB · pith_short_8: 34WBMDWP

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/34WBMDWPN3QL6ENBCV4CXF2JQQ \
  | 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: df2c160ecf6ee0bf11a115782b974984079561188fda10f9728ac81104b054d7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3b67adb95ebcb5854d5b47b9cb7f69f83eb88ce7661ff4408ec7e400d4c64986",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-06-30T18:02:39Z",
    "title_canon_sha256": "221eb835cf6e7a3c263770ba032842f8e02e0015900b4e62899d2513713c5246"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0506766",
    "kind": "arxiv",
    "version": 1
  }
}