Pith Number

pith:EWIKLCT2

pith:2001:EWIKLCT2RB3YWG6GYBGV54WOR3

not attested not anchored not stored refs pending

The ROSAT Deep Survey: VI. X-ray sources and Optical identifications of the Ultra Deep Survey

D.P. Schneider, D. Thompson, G. Hasinger, G. Szokoly, G. Wilson, G. Zamorani, I. Lehmann, J.E. Gunn, J. Truemper, L. Pozzetti, M. Schmidt, R. Giacconi, T. Stanke

arxiv:astro-ph/0103368 v2 · 2001-03-22 · 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{EWIKLCT2RB3YWG6GYBGV54WOR3}

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	2026-07-04T16:22:55.425118Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2590a58a7a88778b1bc6c04d5ef2ce8ef2a388c5ac6693f0bf8c090b2dd76fa0

Aliases

arxiv: astro-ph/0103368 · arxiv_version: astro-ph/0103368v2 · doi: 10.48550/arxiv.astro-ph/0103368 · pith_short_12: EWIKLCT2RB3Y · pith_short_16: EWIKLCT2RB3YWG6G · pith_short_8: EWIKLCT2

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/EWIKLCT2RB3YWG6GYBGV54WOR3 \
  | 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: 2590a58a7a88778b1bc6c04d5ef2ce8ef2a388c5ac6693f0bf8c090b2dd76fa0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a12e7444a6f5b0bdf6f67b5e7bdb8a2cf4d702a533f606daab22641c8507c9e6",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-03-22T21:26:00Z",
    "title_canon_sha256": "4f235eb3b79fdc497a74ebb9a36116f3adc6e3297c09e4690dfef2cf017a392c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0103368",
    "kind": "arxiv",
    "version": 2
  }
}