Pith Number

pith:4DV4Q77A

pith:2003:4DV4Q77ANRXWJPDJHHKNVVZTAT

not attested not anchored not stored refs pending

The nature of X-ray selected EROs

G. Hasinger, G. Szokoly, Ian Smail, I. Lehmann, J.A. Stevens, M.J. Page, R.J. Ivison

arxiv:astro-ph/0302289 v1 · 2003-02-14 · 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{4DV4Q77ANRXWJPDJHHKNVVZTAT}

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	2026-07-04T16:36:30.160425Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e0ebc87fe06c6f64bc6939d4dad73304ed8daf8606e07d1470c96f36fa5a731e

Aliases

arxiv: astro-ph/0302289 · arxiv_version: astro-ph/0302289v1 · doi: 10.48550/arxiv.astro-ph/0302289 · pith_short_12: 4DV4Q77ANRXW · pith_short_16: 4DV4Q77ANRXWJPDJ · pith_short_8: 4DV4Q77A

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/4DV4Q77ANRXWJPDJHHKNVVZTAT \
  | 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: e0ebc87fe06c6f64bc6939d4dad73304ed8daf8606e07d1470c96f36fa5a731e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "26f367343de1ccc475dff77bee4361b8d5cf506b7f598b107fe71983ed44e54c",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-02-14T17:10:42Z",
    "title_canon_sha256": "f0055564913503d08b10658ae9a14a9b45551093da0771d9a57f6e458aee22bd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0302289",
    "kind": "arxiv",
    "version": 1
  }
}