Pith Number

pith:M3PXTQZH

pith:2002:M3PXTQZHHJKWEGYFYFXDUBL3I3

not attested not anchored not stored refs pending

A Search for N2+ in Spectra of Comet C/2002C1 (Ikeya-Zhang)

Anita L. Cochran

arxiv:astro-ph/0208446 v1 · 2002-08-23 · astro-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{M3PXTQZHHJKWEGYFYFXDUBL3I3}

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	2026-07-04T16:30:41.034750Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

66df79c3273a55621b05c16e3a057b46c37f23463e2ee44051c5a17f7c57de03

Aliases

arxiv: astro-ph/0208446 · arxiv_version: astro-ph/0208446v1 · doi: 10.48550/arxiv.astro-ph/0208446 · pith_short_12: M3PXTQZHHJKW · pith_short_16: M3PXTQZHHJKWEGYF · pith_short_8: M3PXTQZH

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/M3PXTQZHHJKWEGYFYFXDUBL3I3 \
  | 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: 66df79c3273a55621b05c16e3a057b46c37f23463e2ee44051c5a17f7c57de03

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8ca227fdbf404b67cb99a518269a873089ae897676ca666d920c44675ce4e2c3",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-08-23T23:24:13Z",
    "title_canon_sha256": "cd24bc71c2a4705b67a37b061eb4aec907af114d064263a1f7879f4515531d68"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0208446",
    "kind": "arxiv",
    "version": 1
  }
}