Pith Number

pith:P3CRE7T6

pith:2003:P3CRE7T6YSPTV7RAO4AWCXVT4B

not attested not anchored not stored refs pending

Evidence for an intermediate mass black hole and a multi-zone warm absorber in NGC 4395

2), (2) Princeton), A. C. Fabian (1) ((1) IoA, Cambridge, D. C. Shih (1, K. Iwasawa (1)

arxiv:astro-ph/0302108 v1 · 2003-02-06 · 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{P3CRE7T6YSPTV7RAO4AWCXVT4B}

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	2026-07-04T15:49:48.642846Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7ec5127e7ec49f3afe207701615eb3e06e66a93e19c2ee1438a07086080a9a23

Aliases

arxiv: astro-ph/0302108 · arxiv_version: astro-ph/0302108v1 · doi: 10.48550/arxiv.astro-ph/0302108 · pith_short_12: P3CRE7T6YSPT · pith_short_16: P3CRE7T6YSPTV7RA · pith_short_8: P3CRE7T6

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/P3CRE7T6YSPTV7RAO4AWCXVT4B \
  | 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: 7ec5127e7ec49f3afe207701615eb3e06e66a93e19c2ee1438a07086080a9a23

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1597e54d4d577ad36734088a91401b7b559f63e2f62a84ce556eda9509b256d4",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-02-06T03:29:43Z",
    "title_canon_sha256": "b697fcf2798e6a8899c0fae564c00c8b70a51aeebcbd158f3475d64f3d97552b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0302108",
    "kind": "arxiv",
    "version": 1
  }
}