Pith Number

pith:A7BDVSJX

pith:2015:A7BDVSJXASBGBLO6CDFMPREIB3

not attested not anchored not stored refs pending

Exploring the Active Galactic Nuclei population with extreme X-ray to optical flux ratios (Fx/Fo >50)

(2) IFCA (CSIC-UC), (3) NOA, (4) Durham University, (5) Leicester University, A. Caccianiga (1), A. Corral (3), A. Del Moro (4), A. Ruiz (2), F.J. Carrera (2), Greece, Italy, L. Ballo (1), M.G. Watson (5) ((1) INAF-OABrera, P. Severgnini (1), R. Della Ceca (1), S. Mateos (2), Spain, UK, UK), V. Braito (1)

arxiv:1501.01444 v1 · 2015-01-07 · astro-ph.GA · astro-ph.HE

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{A7BDVSJXASBGBLO6CDFMPREIB3}

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	2026-05-18T01:41:14.051193Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

07c23ac937048260adde10cac7c4880ec6cfe744970f95cacbef8a4919f7a522

Aliases

arxiv: 1501.01444 · arxiv_version: 1501.01444v1 · doi: 10.48550/arxiv.1501.01444 · pith_short_12: A7BDVSJXASBG · pith_short_16: A7BDVSJXASBGBLO6 · pith_short_8: A7BDVSJX

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/A7BDVSJXASBGBLO6CDFMPREIB3 \
  | 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: 07c23ac937048260adde10cac7c4880ec6cfe744970f95cacbef8a4919f7a522

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0dc0bae54b89abcf2d1976e7fd6c7d7d8f055ad43930529701b43308d7e5189b",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-01-07T11:05:51Z",
    "title_canon_sha256": "b7f81754ced043d385000b07980bf9d075e3ed17834a84670c67fb871246a66b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1501.01444",
    "kind": "arxiv",
    "version": 1
  }
}