Pith Number

pith:I62CZ6OK

pith:2002:I62CZ6OK4BJZPQPI5RVH3MRMRO

not attested not anchored not stored refs pending

Characterising the complex absorber in NGC 4151

Astronomy, N.J. Schurch (1), R.S. Warwick (1) ((1) Dept. of Physics, UK), University of Leicester

arxiv:astro-ph/0204057 v2 · 2002-04-03 · 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{I62CZ6OK4BJZPQPI5RVH3MRMRO}

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	2026-05-18T01:07:44.987083Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

47b42cf9cae05397c1e8ec6a7db22c8bbccf6b26eed8b2027ba5d5ad37117b09

Aliases

arxiv: astro-ph/0204057 · arxiv_version: astro-ph/0204057v2 · doi: 10.48550/arxiv.astro-ph/0204057 · pith_short_12: I62CZ6OK4BJZ · pith_short_16: I62CZ6OK4BJZPQPI · pith_short_8: I62CZ6OK

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/I62CZ6OK4BJZPQPI5RVH3MRMRO \
  | 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: 47b42cf9cae05397c1e8ec6a7db22c8bbccf6b26eed8b2027ba5d5ad37117b09

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8aea46912ac75d2b0261be96bd382d0c438b2204e8e7d6d298d7dd474460bc68",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-04-03T14:15:22Z",
    "title_canon_sha256": "2c0aa09ba59ca5a01fec5fe25e3c529fd6c78d9b1baea0e1794ae49029884d39"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0204057",
    "kind": "arxiv",
    "version": 2
  }
}