Pith Number

pith:TANXO5Q4

pith:2018:TANXO5Q47PX7L4B6U3IPN7RAFK

not attested not anchored not stored refs pending

Explaining changing-look AGN with state transition triggered by rapid mass accretion rate drop

Chris Done, Hirofumi Noda

arxiv:1805.07873 v2 · 2018-05-21 · 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{TANXO5Q47PX7L4B6U3IPN7RAFK}

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	2026-05-18T00:08:41.669014Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

981b77761cfbeff5f03ea6d0f6fe202aa89723401578e50e6418200a469d1725

Aliases

arxiv: 1805.07873 · arxiv_version: 1805.07873v2 · doi: 10.48550/arxiv.1805.07873 · pith_short_12: TANXO5Q47PX7 · pith_short_16: TANXO5Q47PX7L4B6 · pith_short_8: TANXO5Q4

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/TANXO5Q47PX7L4B6U3IPN7RAFK \
  | 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: 981b77761cfbeff5f03ea6d0f6fe202aa89723401578e50e6418200a469d1725

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4cc9444efb0397e89a86daad23f96062b7e918b0b19d71a7aa99708595f714c7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-05-21T02:35:07Z",
    "title_canon_sha256": "ee6837ed9fde855b9c28cda3f90973d22d8c45d66d09f90ac5b1ab9760b66228"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.07873",
    "kind": "arxiv",
    "version": 2
  }
}