Pith Number

pith:PHLIG5ZL

pith:2010:PHLIG5ZLY3BY6CZB42USBFOEDJ

not attested not anchored not stored refs pending

Carbon ionization states and the cosmic far-UV background with HeII absorption

Biman B. Nath, Evgenii O. Vasiliev, Shiv K. Sethi

arxiv:1006.4985 v1 · 2010-06-25 · 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{PHLIG5ZLY3BY6CZB42USBFOEDJ}

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	2026-05-18T02:06:42.379448Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

79d683772bc6c38f0b21e6a92095c41a4ee98edbc9570d4482eacbc275eaec18

Aliases

arxiv: 1006.4985 · arxiv_version: 1006.4985v1 · doi: 10.48550/arxiv.1006.4985 · pith_short_12: PHLIG5ZLY3BY · pith_short_16: PHLIG5ZLY3BY6CZB · pith_short_8: PHLIG5ZL

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/PHLIG5ZLY3BY6CZB42USBFOEDJ \
  | 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: 79d683772bc6c38f0b21e6a92095c41a4ee98edbc9570d4482eacbc275eaec18

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "14b3dde090b92eeba5451b3765b4b9397ef8105db406e4677d6478279abf88b3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-06-25T13:01:52Z",
    "title_canon_sha256": "a29ff49374ca7c9150f81e9e8409e3b865b072bb04f7b2a7cdfc8ae46546fe51"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1006.4985",
    "kind": "arxiv",
    "version": 1
  }
}