Pith Number

pith:OF4FB6R2

pith:2016:OF4FB6R2VAFEX4JFXDHZFSMTNH

not attested not anchored not stored refs pending

Planetary Nebula Candidates Uncovered with the HASH Research Platform

David Frew, Ivan Boji\v{c}i\'c, Quentin Parker, Vasiliki Fragkou

arxiv:1611.08590 v1 · 2016-11-24 · astro-ph.GA · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OF4FB6R2VAFEX4JFXDHZFSMTNH}

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	2026-05-18T00:30:46.472601Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

717850fa3aa80a4bf125b8cf92c99369da14e4ec8c2c3c081f38eb2a9eb6cede

Aliases

arxiv: 1611.08590 · arxiv_version: 1611.08590v1 · doi: 10.48550/arxiv.1611.08590 · pith_short_12: OF4FB6R2VAFE · pith_short_16: OF4FB6R2VAFEX4JF · pith_short_8: OF4FB6R2

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/OF4FB6R2VAFEX4JFXDHZFSMTNH \
  | 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: 717850fa3aa80a4bf125b8cf92c99369da14e4ec8c2c3c081f38eb2a9eb6cede

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4e8ca1b65c9ba24cd4a5313c401f7d443ae17450c2be387b0568080a18f77085",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2016-11-24T17:26:40Z",
    "title_canon_sha256": "02fba1d28688e7c54d6aadb689e5a70d4ea3dc27ea7c17e95454fa9d12930e2b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1611.08590",
    "kind": "arxiv",
    "version": 1
  }
}