Pith Number

pith:FNRFJ4RV

pith:2020:FNRFJ4RVRDLY55AGYFFBLTWFIF

not attested not anchored not stored refs pending

Comet 12P/Pons-Brooks: Identification with Comets C/1385 U1 and C/1457 A1

Daniel W. E. Green, Maik Meyer, Syuichi Nakano, Takao Kobayashi

arxiv:2012.15583 v1 · 2020-12-31 · astro-ph.EP · physics.hist-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FNRFJ4RVRDLY55AGYFFBLTWFIF}

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	2026-07-05T02:03:19.834233Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2b6254f23588d78ef406c14a15cec541429b779a04d69d34903659df9ca7fbc2

Aliases

arxiv: 2012.15583 · arxiv_version: 2012.15583v1 · doi: 10.48550/arxiv.2012.15583 · pith_short_12: FNRFJ4RVRDLY · pith_short_16: FNRFJ4RVRDLY55AG · pith_short_8: FNRFJ4RV

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/FNRFJ4RVRDLY55AGYFFBLTWFIF \
  | 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: 2b6254f23588d78ef406c14a15cec541429b779a04d69d34903659df9ca7fbc2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6b9e30f1a39c611995407aa825e522403afeb5d869a27018c9bbf35c0cb08ec7",
    "cross_cats_sorted": [
      "physics.hist-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2020-12-31T12:37:19Z",
    "title_canon_sha256": "04041aafd30ef34c16fbda3a13ffc39becf23f725acdc5985ced64f9bae4a22f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2012.15583",
    "kind": "arxiv",
    "version": 1
  }
}