Pith Number

pith:WJNWHZLR

pith:2017:WJNWHZLRHEKLK32KCJB7RQOXJM

not attested not anchored not stored refs pending

A 100 kpc nebula associated with the "Teacup" fading quasar

Andrew Humphrey, Antonio Cabrera Lavers, Bjorn Emonts, Cristina Ramos Almeida, Javier Piqueras, Marckelson Silva, Montserrat Villar Martin

arxiv:1711.02529 v1 · 2017-11-07 · 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{WJNWHZLRHEKLK32KCJB7RQOXJM}

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	2026-05-18T00:27:12.400118Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b25b63e5713914b56f4a1243f8c1d74b1196a59a7cc4c21bbcd380c6d7d72c2a

Aliases

arxiv: 1711.02529 · arxiv_version: 1711.02529v1 · doi: 10.48550/arxiv.1711.02529 · pith_short_12: WJNWHZLRHEKL · pith_short_16: WJNWHZLRHEKLK32K · pith_short_8: WJNWHZLR

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/WJNWHZLRHEKLK32KCJB7RQOXJM \
  | 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: b25b63e5713914b56f4a1243f8c1d74b1196a59a7cc4c21bbcd380c6d7d72c2a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c4a0a9cd3ef9d604c6890bde284b4ce708d1872d410173dc09aa493fe805746d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2017-11-07T15:22:17Z",
    "title_canon_sha256": "06028cd03b51639543f6bf0a689262adac77e68db0865f00cf015bcdbaf7d594"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1711.02529",
    "kind": "arxiv",
    "version": 1
  }
}