Pith Number

pith:QJOND3EF

pith:2016:QJOND3EFGUYUMJRJZT3G7SVM52

not attested not anchored not stored refs pending

The Close AGN Reference Survey (CARS) - Mrk 1018 returns to the shadows after 30 years as a Seyfert 1

A. Eckart, B. Husemann, F. Combes, G. Busch, G. R. Tremblay, J. Scharwachter, M. Perez-Torres, M. Powell, R. E. McElroy, S. M. Croom, T. A. Davis, T. Urrutia, V. N. Bennert

arxiv:1609.04423 v1 · 2016-09-14 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QJOND3EFGUYUMJRJZT3G7SVM52}

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	2026-05-18T01:04:36.796600Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

825cd1ec853531462629ccf66fcaaceeab37d2e9ce299fa6a030293803b6033b

Aliases

arxiv: 1609.04423 · arxiv_version: 1609.04423v1 · doi: 10.48550/arxiv.1609.04423 · pith_short_12: QJOND3EFGUYU · pith_short_16: QJOND3EFGUYUMJRJ · pith_short_8: QJOND3EF

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/QJOND3EFGUYUMJRJZT3G7SVM52 \
  | 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: 825cd1ec853531462629ccf66fcaaceeab37d2e9ce299fa6a030293803b6033b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a6f363bc7bbed3dc30c9494781d79c97cf1e640ab86f4683fa3c22be575f260d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2016-09-14T20:08:46Z",
    "title_canon_sha256": "2e0105ad64478ddf454103e9fc699c1052d1fb431941ef2c9dae0f16261736ed"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1609.04423",
    "kind": "arxiv",
    "version": 1
  }
}