Pith Number

pith:FFT4WSAU

pith:1997:FFT4WSAUHLGCHJVYF3QY2WW4O6

not attested not anchored not stored refs pending

The ROSAT Deep Survey I. X-ray sources in the Lockman Field

(2) Johns Hopkins University, (3) ESO Garching, (4) Caltech, (5) MPE Garching, (6) Bologna Observatory), & Gianni Zamorani (6) ((1) Astrophysikalisches Inst. Potsdam, Guenther Hasinger (1), Joachim Truemper (5), Maarten Schmidt (4), Riccardo Giacconi (3), Richard Burg (2)

arxiv:astro-ph/9709142 v1 · 1997-09-15 · 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{FFT4WSAUHLGCHJVYF3QY2WW4O6}

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	2026-05-18T01:07:38.104333Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2967cb48143acc23a6b82ee18d5adc77a9e4e9cc0a819c3a79ece87ac30ccb40

Aliases

arxiv: astro-ph/9709142 · arxiv_version: astro-ph/9709142v1 · doi: 10.48550/arxiv.astro-ph/9709142 · pith_short_12: FFT4WSAUHLGC · pith_short_16: FFT4WSAUHLGCHJVY · pith_short_8: FFT4WSAU

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/FFT4WSAUHLGCHJVYF3QY2WW4O6 \
  | 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: 2967cb48143acc23a6b82ee18d5adc77a9e4e9cc0a819c3a79ece87ac30ccb40

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "eb6f09823de6660f45574403b515f193027613de9b9bb242a12edf2b17707214",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1997-09-15T18:28:52Z",
    "title_canon_sha256": "a94eebef5d81ca218066fe2662da31b5f314084abcc0f12c7ae6a8633ecca67c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9709142",
    "kind": "arxiv",
    "version": 1
  }
}