Pith Number

pith:HN6T6K4C

pith:2009:HN6T6K4CMEBWEULO2MOPB2AD2Q

not attested not anchored not stored refs pending

Physical Conditions in the Inner Narrow Line Region of the Seyfert 2 Galaxy Markarian 573

D. M. Crenshaw, H.R. Schmitt, M.L. Trippe, M. Melendez, S. B. Kraemer, T.C. Fischer

arxiv:0903.4411 v1 · 2009-03-25 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HN6T6K4CMEBWEULO2MOPB2AD2Q}

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	2026-05-18T04:29:15.620157Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3b7d3f2b82610362516ed31cf0e803d43d3c53c8a295f3d6d07e20c0956fd1ff

Aliases

arxiv: 0903.4411 · arxiv_version: 0903.4411v1 · doi: 10.48550/arxiv.0903.4411 · pith_short_12: HN6T6K4CMEBW · pith_short_16: HN6T6K4CMEBWEULO · pith_short_8: HN6T6K4C

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/HN6T6K4CMEBWEULO2MOPB2AD2Q \
  | 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: 3b7d3f2b82610362516ed31cf0e803d43d3c53c8a295f3d6d07e20c0956fd1ff

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "173bf53f5401999ae066048f23689d38b5948298f3b60d67b5fb9cff9e0fa018",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-03-25T17:57:23Z",
    "title_canon_sha256": "12edf54a8b9588bd9f261a8c661672e70b44568f19427a67913c62c0e44349a3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.4411",
    "kind": "arxiv",
    "version": 1
  }
}