Pith Number

pith:K4MELYZR

pith:2012:K4MELYZRWIPB34G74KFOB3OE45

not attested not anchored not stored refs pending

Neutral and ionized gas around the post-Red Supergiant IRC+10420 at au size scales

Rene Oudmaijer (Leeds), Willem-Jan de Wit (ESO)

arxiv:1212.4621 v1 · 2012-12-19 · 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{K4MELYZRWIPB34G74KFOB3OE45}

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	2026-05-18T01:52:30.549373Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

571845e331b21e1df0dfe28ae0edc4e75d4c45c1852e9b8a183cd7ca2ad1b6e4

Aliases

arxiv: 1212.4621 · arxiv_version: 1212.4621v1 · doi: 10.48550/arxiv.1212.4621 · pith_short_12: K4MELYZRWIPB · pith_short_16: K4MELYZRWIPB34G7 · pith_short_8: K4MELYZR

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/K4MELYZRWIPB34G74KFOB3OE45 \
  | 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: 571845e331b21e1df0dfe28ae0edc4e75d4c45c1852e9b8a183cd7ca2ad1b6e4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5a205ffd47342e71163b899d1801f02b02319633c1a63fe2d4e955e2e53de517",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2012-12-19T10:55:58Z",
    "title_canon_sha256": "0e24831bfcbc5b3e9d4d9388f7558c7c0bf6d4789127c3aa56252e0285e4d719"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1212.4621",
    "kind": "arxiv",
    "version": 1
  }
}