Pith Number

pith:FAZ5BPBH

pith:2019:FAZ5BPBH2TK6DXBSAOBRI3L2GD

not attested not anchored not stored refs pending

Quasar Main Sequence: a line or a plane?

Bozena Czerny, Conor Wildy, Swayamtrupta Panda

arxiv:1908.04990 v3 · 2019-08-14 · 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{FAZ5BPBH2TK6DXBSAOBRI3L2GD}

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	2026-07-05T00:30:21.050472Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2833d0bc27d4d5e1dc320383146d7a30ff2286b20d28ca5324557e70475c9452

Aliases

arxiv: 1908.04990 · arxiv_version: 1908.04990v3 · doi: 10.48550/arxiv.1908.04990 · pith_short_12: FAZ5BPBH2TK6 · pith_short_16: FAZ5BPBH2TK6DXBS · pith_short_8: FAZ5BPBH

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/FAZ5BPBH2TK6DXBSAOBRI3L2GD \
  | 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: 2833d0bc27d4d5e1dc320383146d7a30ff2286b20d28ca5324557e70475c9452

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "896ccf874b02721e6b972a17ae17843323f0cc4998da835b98f71435b0da0e3a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-08-14T07:12:21Z",
    "title_canon_sha256": "6f98f3b439c9c7badd89d8921008663ac8def43caff34ade0289e78ae01b1b93"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.04990",
    "kind": "arxiv",
    "version": 3
  }
}