Pith Number

pith:SVFNTZNI

pith:2004:SVFNTZNIFVEM27TXEMTTEF2KEL

not attested not anchored not stored refs pending

The nature of close companions of the BL Lac Objects 1ES 0502+675 and 1ES 1440+122

A. Treves, C.M. Urry, G. Giovannini, R. Falomo, R. Scarpa

arxiv:astro-ph/0406284 v1 · 2004-06-11 · 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{SVFNTZNIFVEM27TXEMTTEF2KEL}

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	2026-07-04T16:43:59.503699Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

954ad9e5a82d48cd7e77232732174a22e468a5154e24a406dd57ce0e49699cab

Aliases

arxiv: astro-ph/0406284 · arxiv_version: astro-ph/0406284v1 · doi: 10.48550/arxiv.astro-ph/0406284 · pith_short_12: SVFNTZNIFVEM · pith_short_16: SVFNTZNIFVEM27TX · pith_short_8: SVFNTZNI

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/SVFNTZNIFVEM27TXEMTTEF2KEL \
  | 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: 954ad9e5a82d48cd7e77232732174a22e468a5154e24a406dd57ce0e49699cab

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f713ccbd7e2871d864e0014a7c5b0eb6f4134698c50d9f5cb2766e0300091a52",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-06-11T07:58:34Z",
    "title_canon_sha256": "6c8218358834d770c37a207055ffd8103431e80b18eeadb6e02f6ed0bce0637f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0406284",
    "kind": "arxiv",
    "version": 1
  }
}