Pith Number

pith:R6SV5MEO

pith:2003:R6SV5MEOA3ADE3LJK2A5CMYP25

not attested not anchored not stored refs pending

The HELLAS2XMM 1dF survey: on the nature of high X-ray to optical flux ratio sources

A. Baldi, A. Comastri, C. Vignali, F. Cocchia, F. Fiore, F. La Franca, G.C. Perola, G. Matt, M. Brusa, M. Mignoli, N. Carangelo, P. Ciliegi, P. Severgnini, R. Maiolino, S. Molendi

arxiv:astro-ph/0310298 v1 · 2003-10-10 · 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{R6SV5MEOA3ADE3LJK2A5CMYP25}

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	2026-07-04T14:13:04.622720Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8fa55eb08e06c0326d695681d1330fd76281055a79c1f43fa460a5c23b021cd3

Aliases

arxiv: astro-ph/0310298 · arxiv_version: astro-ph/0310298v1 · doi: 10.48550/arxiv.astro-ph/0310298 · pith_short_12: R6SV5MEOA3AD · pith_short_16: R6SV5MEOA3ADE3LJ · pith_short_8: R6SV5MEO

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/R6SV5MEOA3ADE3LJK2A5CMYP25 \
  | 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: 8fa55eb08e06c0326d695681d1330fd76281055a79c1f43fa460a5c23b021cd3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2595f431712f051e37ddba1c46f614983a65f3d5264e559bcf10429c8170bbae",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-10-10T15:25:15Z",
    "title_canon_sha256": "da34f4db45014212aa06a0c5b89d1df98c28411f036ca3af8e7b4c3f1e7b2870"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0310298",
    "kind": "arxiv",
    "version": 1
  }
}