Pith Number

pith:YCYILISD

pith:2009:YCYILISDC25CYVQBGAIC7CPPN7

not attested not anchored not stored refs pending

Unmasking the Active Galactic Nucleus in PKS J2310-437

A. F. Bliss, D. M. Worrall, H. Tananbaum, M. Birkinshaw, S. S. Murray

arxiv:0904.1112 v1 · 2009-04-07 · astro-ph.HE · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YCYILISDC25CYVQBGAIC7CPPN7}

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	2026-07-04T17:15:48.757730Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c0b085a24316ba2c560130102f89ef6fc8ddc215a9792f60067def16f9f77c9b

Aliases

arxiv: 0904.1112 · arxiv_version: 0904.1112v1 · doi: 10.48550/arxiv.0904.1112 · pith_short_12: YCYILISDC25C · pith_short_16: YCYILISDC25CYVQB · pith_short_8: YCYILISD

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/YCYILISDC25CYVQBGAIC7CPPN7 \
  | 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: c0b085a24316ba2c560130102f89ef6fc8ddc215a9792f60067def16f9f77c9b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e6cc1725c3f68a738c4b2f423ff29f1b5dcb345d5d3ead0a24f4bf7f5e24d04e",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2009-04-07T11:10:37Z",
    "title_canon_sha256": "db7c2fbb1c15880aed3e6477fda295eef33001ccaf5e4e5255eb5b34d2759b34"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.1112",
    "kind": "arxiv",
    "version": 1
  }
}