Pith Number

pith:66EPETAH

pith:2004:66EPETAHBLILLPDMP6EXMHDT7I

not attested not anchored not stored refs pending

A study of the 15 micron quasars in the ELAIS N1 and N2 fields

A. Afonso-Luis (1), A. Hernan-Caballero (1), Bologna, C. Lari (4), E.A. Gonzalez-Solares (2), E. Hatziminaoglou (1), F.M. Montenegro-Montes (1) ((1) Instituto de Astrofisica de Canarias, I. Perez-Fournon (1), Italy; (5) University of Kent, London, M. Rowan-Robinson (3), M. Vaccari (3), S. Oliver (6), Spain; (2)Institute of Astronomy, S. Serjeant (5), Technology & Medicine, UK), UK; (3) Imperial College of Science, UK; (4) Instituto de Radioastronomia, UK; (6) University of Sussex, University of Cambridge

arxiv:astro-ph/0408045 v1 · 2004-08-03 · 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{66EPETAHBLILLPDMP6EXMHDT7I}

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	2026-07-04T16:44:25.814575Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f788f24c070ad0b5bc6c7f89761c73fa3a5d9aeb6421f2d06a6a6f54ade529c6

Aliases

arxiv: astro-ph/0408045 · arxiv_version: astro-ph/0408045v1 · doi: 10.48550/arxiv.astro-ph/0408045 · pith_short_12: 66EPETAHBLIL · pith_short_16: 66EPETAHBLILLPDM · pith_short_8: 66EPETAH

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/66EPETAHBLILLPDMP6EXMHDT7I \
  | 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: f788f24c070ad0b5bc6c7f89761c73fa3a5d9aeb6421f2d06a6a6f54ade529c6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "214cb5c3a341018622b7dbbb4275e2ec27468842c474e2372dda2f712cef6b33",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-08-03T11:05:57Z",
    "title_canon_sha256": "0987c365f5e7903a5920e5a1805bea9579d408150551143c9617147ae0ce3976"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0408045",
    "kind": "arxiv",
    "version": 1
  }
}