Pith Number

pith:PLPSOJ2N

pith:2005:PLPSOJ2NKNR7M4M57J5CZCSPXP

not attested not anchored not stored refs pending

Obscured Activity: AGN, Quasars, Starbursts and ULIGs observed by the Infrared Space Observatory

Aprajita Verma, Dieter Lutz, Martin Haas, Ulrich Klaas, Vassilis Charmandaris

arxiv:astro-ph/0507165 v1 · 2005-07-07 · 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{PLPSOJ2NKNR7M4M57J5CZCSPXP}

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	2026-07-04T16:52:43.272864Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7adf27274d5363f6719dfa7a2c8a4fbbf64fcc7a6cc639421322e195a1d02c79

Aliases

arxiv: astro-ph/0507165 · arxiv_version: astro-ph/0507165v1 · doi: 10.48550/arxiv.astro-ph/0507165 · pith_short_12: PLPSOJ2NKNR7 · pith_short_16: PLPSOJ2NKNR7M4M5 · pith_short_8: PLPSOJ2N

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/PLPSOJ2NKNR7M4M57J5CZCSPXP \
  | 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: 7adf27274d5363f6719dfa7a2c8a4fbbf64fcc7a6cc639421322e195a1d02c79

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3627180969a4ce1f20cada6317b189f41a8e25a8125bbdd20989966c8387b1eb",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-07-07T10:55:34Z",
    "title_canon_sha256": "5ae63c27a2ea50eae8fddc935bde93386a684f3b89f2e2b46e4f937acf81e432"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0507165",
    "kind": "arxiv",
    "version": 1
  }
}