Pith Number

pith:PP4F7DIA

pith:2013:PP4F7DIAPCNDAY6MAAOB5PC7UD

not attested not anchored not stored refs pending

The changing nebula around the hot R Coronae Borealis star DY Centauri

A. Manchado, D. A. Garcia-Hernandez, D. L. Lambert, N. Kameswara Rao

arxiv:1301.5773 v1 · 2013-01-24 · 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{PP4F7DIAPCNDAY6MAAOB5PC7UD}

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	2026-05-18T01:51:59.007288Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7bf85f8d00789a3063cc001c1ebc5fa0cf38305e54326d2cdc2f9604d0376cdc

Aliases

arxiv: 1301.5773 · arxiv_version: 1301.5773v1 · doi: 10.48550/arxiv.1301.5773 · pith_short_12: PP4F7DIAPCND · pith_short_16: PP4F7DIAPCNDAY6M · pith_short_8: PP4F7DIA

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/PP4F7DIAPCNDAY6MAAOB5PC7UD \
  | 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: 7bf85f8d00789a3063cc001c1ebc5fa0cf38305e54326d2cdc2f9604d0376cdc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c6ff85fd4f08324b3e25a3d35171659c8aa6cd67b0afdd10fd0b9990d650304f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2013-01-24T12:53:01Z",
    "title_canon_sha256": "ed60b96512f45a2afb32c13ce0a6256032afd9fe13e1526c384946b931a13dd8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.5773",
    "kind": "arxiv",
    "version": 1
  }
}