Pith Number

pith:RCD74FFW

pith:2013:RCD74FFWD3NOBQGLNENYWRLYXE

not attested not anchored not stored refs pending

Nova Aquilae 1918 (V603 Aql) Faded by 0.44 mag/century from 1938-2013

Arne Henden (AAVSO), Bradley E. Schaefer (LSU), Christopher B. Johnson (LSU), Peter Kroll (Sonneberg Observatory)

arxiv:1310.6802 v2 · 2013-10-25 · 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{RCD74FFWD3NOBQGLNENYWRLYXE}

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	2026-05-18T01:46:49.741986Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8887fe14b61edae0c0cb691b8b4578b908d38e0126ec445c8db5f22a409ace83

Aliases

arxiv: 1310.6802 · arxiv_version: 1310.6802v2 · doi: 10.48550/arxiv.1310.6802 · pith_short_12: RCD74FFWD3NO · pith_short_16: RCD74FFWD3NOBQGL · pith_short_8: RCD74FFW

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/RCD74FFWD3NOBQGLNENYWRLYXE \
  | 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: 8887fe14b61edae0c0cb691b8b4578b908d38e0126ec445c8db5f22a409ace83

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4f5890c0c710d6b99d365f08271445f3b70f00654b79dcb9f21d04dfe879ef6b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2013-10-25T01:49:37Z",
    "title_canon_sha256": "43090846a80ad413579ff00bbaf1dc2877403853bd7190181d3a5f115cf3f951"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1310.6802",
    "kind": "arxiv",
    "version": 2
  }
}