Pith Number

pith:KP6A34S5

pith:2006:KP6A34S54INEEOYHFY4IKY7AXX

not attested not anchored not stored refs pending

A Radio Study of the Seyfert galaxy Markarian 6: Implications for Seyfert life-cycles

C. P. O'Dea (RIT), C. Xu (STScI), E. J. M. Colbert (JHU), P. Kharb (RIT), S. A. Baum (RIT)

arxiv:astro-ph/0607603 v1 · 2006-07-26 · 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{KP6A34S54INEEOYHFY4IKY7AXX}

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	2026-05-18T04:28:58.217847Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

53fc0df25de21a423b072e388563e0bdc0d977349132a9171bc189719cb45a93

Aliases

arxiv: astro-ph/0607603 · arxiv_version: astro-ph/0607603v1 · doi: 10.48550/arxiv.astro-ph/0607603 · pith_short_12: KP6A34S54INE · pith_short_16: KP6A34S54INEEOYH · pith_short_8: KP6A34S5

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/KP6A34S54INEEOYHFY4IKY7AXX \
  | 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: 53fc0df25de21a423b072e388563e0bdc0d977349132a9171bc189719cb45a93

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "74ed8f21e7e4470d5b0ae3c886bc2023dfd667293ea565f82f89b9164e18c095",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2006-07-26T20:40:36Z",
    "title_canon_sha256": "b9194c8e4932cb126f1c111d8f32c7b2f2a8bc777cc892316c21eea5bb035da7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0607603",
    "kind": "arxiv",
    "version": 1
  }
}