Pith Number

pith:C4ETM56U

pith:1997:C4ETM56UVKKZIJ7CXYLPFBULU7

not attested not anchored not stored refs pending

EGRET gamma-ray source 2EG J0809+5117, a quasar with redshift of 1.14?

Beijing), Li Cao (BAO, Qi-Bin Li, Xue-Bing Wu, Yong-Heng Zhao

arxiv:astro-ph/9708267 v1 · 1997-08-29 · 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{C4ETM56UVKKZIJ7CXYLPFBULU7}

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	2026-07-04T15:50:40.178422Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

17093677d4aa959427e2be16f2868ba7f09ea487748a7ee76836d10e1f01819d

Aliases

arxiv: astro-ph/9708267 · arxiv_version: astro-ph/9708267v1 · doi: 10.48550/arxiv.astro-ph/9708267 · pith_short_12: C4ETM56UVKKZ · pith_short_16: C4ETM56UVKKZIJ7C · pith_short_8: C4ETM56U

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/C4ETM56UVKKZIJ7CXYLPFBULU7 \
  | 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: 17093677d4aa959427e2be16f2868ba7f09ea487748a7ee76836d10e1f01819d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "eb372f9706531d84ed2d6bdecd880977ff7f87c04450426394b718a41d1c45d3",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1997-08-29T04:03:35Z",
    "title_canon_sha256": "80012a9526832ac0060392715378b2d089b9ab1cf3f6333a870313896d9f7768"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9708267",
    "kind": "arxiv",
    "version": 1
  }
}