Pith Number

pith:UDIER3BK

pith:2012:UDIER3BKXR4RH7FACSO42ZVJC2

not attested not anchored not stored refs pending

Type 1 AGN at low z

Ari Laor, Jonathan Stern

arxiv:1203.5005 v1 · 2012-03-22 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UDIER3BKXR4RH7FACSO42ZVJC2}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T03:59:28.150946Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a0d048ec2abc7913fca0149dcd66a916bd47f4ca35d30ffe96a515ee41f9734c

Aliases

arxiv: 1203.5005 · arxiv_version: 1203.5005v1 · doi: 10.48550/arxiv.1203.5005 · pith_short_12: UDIER3BKXR4R · pith_short_16: UDIER3BKXR4RH7FA · pith_short_8: UDIER3BK

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/UDIER3BKXR4RH7FACSO42ZVJC2 \
  | 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: a0d048ec2abc7913fca0149dcd66a916bd47f4ca35d30ffe96a515ee41f9734c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f3fdf3f338792f8e2363a1087eb23d1d73a308d8d06026e0e3a6887b209d736b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-03-22T14:33:00Z",
    "title_canon_sha256": "eeb703d99938177d007bdb2da1b66e79a95f88a67e457318b569b5d1dca1d6c7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.5005",
    "kind": "arxiv",
    "version": 1
  }
}