Pith Number

pith:UWUHBW5F

pith:2017:UWUHBW5FDCBSVPCATYJQM3ZAHJ

not attested not anchored not stored refs pending

Polarization of the changing-look quasar J1011+5442

B. Agis Gonz\'alez, C. Ramos Almeida, D. Hutsem\'ekers, D. Sluse, J.-A. Acosta Pulido

arxiv:1707.05540 v1 · 2017-07-18 · 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{UWUHBW5FDCBSVPCATYJQM3ZAHJ}

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	2026-05-18T00:38:49.858798Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a5a870dba518832abc409e13066f203a59a712688860f590134df1806de29a4a

Aliases

arxiv: 1707.05540 · arxiv_version: 1707.05540v1 · doi: 10.48550/arxiv.1707.05540 · pith_short_12: UWUHBW5FDCBS · pith_short_16: UWUHBW5FDCBSVPCA · pith_short_8: UWUHBW5F

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/UWUHBW5FDCBSVPCATYJQM3ZAHJ \
  | 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: a5a870dba518832abc409e13066f203a59a712688860f590134df1806de29a4a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "41161bb574401b793e1a2f48dbc6e7f95a66e71a20e0245e80fedd49112da451",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2017-07-18T09:40:25Z",
    "title_canon_sha256": "0a2a61377771c564ee29c06a9cfa7aa9b8cefe576651d7ffb85467712558c935"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1707.05540",
    "kind": "arxiv",
    "version": 1
  }
}