Pith Number

pith:WD2PJBB4

pith:2006:WD2PJBB4BYSSR35S7H7GTEWO57

not attested not anchored not stored refs pending

The Evolution of Optical Depth in the Ly-alpha Forest: Evidence Against Reionization at z~6

George D. Becker (Caltech), Michael Rauch (OCIW), Wallace L. W. Sargent (Caltech)

arxiv:astro-ph/0607633 v1 · 2006-07-28 · 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{WD2PJBB4BYSSR35S7H7GTEWO57}

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	2026-05-18T04:28:58.204199Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b0f4f4843c0e2528efb2f9fe6992ceefdf2d7c06beddcdea3275702133fecc71

Aliases

arxiv: astro-ph/0607633 · arxiv_version: astro-ph/0607633v1 · doi: 10.48550/arxiv.astro-ph/0607633 · pith_short_12: WD2PJBB4BYSS · pith_short_16: WD2PJBB4BYSSR35S · pith_short_8: WD2PJBB4

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/WD2PJBB4BYSSR35S7H7GTEWO57 \
  | 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: b0f4f4843c0e2528efb2f9fe6992ceefdf2d7c06beddcdea3275702133fecc71

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c8f45608f7e86b18c3187ad5897f166a26c3879bbcb4fa96e779c4777bdc70e3",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2006-07-28T00:41:44Z",
    "title_canon_sha256": "c1089481ae74216e7e94d5d95cc13d89ba1339c9e2d2b9791dc1fe319e1e6e0f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0607633",
    "kind": "arxiv",
    "version": 1
  }
}