Pith Number

pith:IJYX7DZI

pith:2005:IJYX7DZIO647NVIL7XZULCJLOS

not attested not anchored not stored refs pending

Tracing baryons in the warm-hot intergalactic medium with broad Ly alpha absorption

Blair Savage, Ken Sembach, Philipp Richter, & Todd Tripp

arxiv:astro-ph/0509539 v1 · 2005-09-19 · 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{IJYX7DZIO647NVIL7XZULCJLOS}

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	2026-07-04T16:52:54.838007Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

42717f8f2877b9f6d50bfdf345892b74941ade19b5ff9b5b2333915cbb981eb2

Aliases

arxiv: astro-ph/0509539 · arxiv_version: astro-ph/0509539v1 · doi: 10.48550/arxiv.astro-ph/0509539 · pith_short_12: IJYX7DZIO647 · pith_short_16: IJYX7DZIO647NVIL · pith_short_8: IJYX7DZI

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/IJYX7DZIO647NVIL7XZULCJLOS \
  | 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: 42717f8f2877b9f6d50bfdf345892b74941ade19b5ff9b5b2333915cbb981eb2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "94cc0d4f4cde2e8c673eb32c8d85390f71c4017d3eb5b010a583068c617fc0f0",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-09-19T12:33:21Z",
    "title_canon_sha256": "a4135930a0456b1d0446e5e87ed68f6274c727a9b0ff9da2116543ba6f622e5a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0509539",
    "kind": "arxiv",
    "version": 1
  }
}