Pith Number

pith:L5OR36HP

pith:1997:L5OR36HPDSQSRM6WIQOBNJ7FRU

not attested not anchored not stored refs pending

AGN predictions for the Hubble Deep Field and the X-ray background

A.C. Fabian (Institute of Astronomy, Cambridge, O. Almaini, UK)

arxiv:astro-ph/9704128 v1 · 1997-04-14 · 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{L5OR36HPDSQSRM6WIQOBNJ7FRU}

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	2026-05-18T01:22:58.776884Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5f5d1df8ef1ca128b3d6441c16a7e58d00b08f5616479a5ebcfcd24f1870e163

Aliases

arxiv: astro-ph/9704128 · arxiv_version: astro-ph/9704128v1 · doi: 10.48550/arxiv.astro-ph/9704128 · pith_short_12: L5OR36HPDSQS · pith_short_16: L5OR36HPDSQSRM6W · pith_short_8: L5OR36HP

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/L5OR36HPDSQSRM6WIQOBNJ7FRU \
  | 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: 5f5d1df8ef1ca128b3d6441c16a7e58d00b08f5616479a5ebcfcd24f1870e163

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1886339759093e91e9270abfff942bced7473a84ce9ccda47c508be61ec98ab4",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1997-04-14T17:19:52Z",
    "title_canon_sha256": "142fd09f73370ad04a1eff27ddea76633a8d5be356eb5b87fd74ed1b69712461"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9704128",
    "kind": "arxiv",
    "version": 1
  }
}