Pith Number

pith:MDPHQ76F

pith:2018:MDPHQ76FLYMS3BYNEP5K5NNHEI

not attested not anchored not stored refs pending

Measuring the Expansion and Age of the Nova Shell IPHASXJ210204.7+471015

E. Santamar\'ia, G. Ramos-Larios, J.A.Toal\'a, L. Sabin, M.A. G\'omez-Mu\~noz, M.A. Guerrero, R. V\'azquez

arxiv:1811.04029 v1 · 2018-11-09 · 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{MDPHQ76FLYMS3BYNEP5K5NNHEI}

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	2026-05-17T23:57:37.532111Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

60de787fc55e192d870d23faaeb5a7223f945a73ebffd35560f3b95f8223284e

Aliases

arxiv: 1811.04029 · arxiv_version: 1811.04029v1 · doi: 10.48550/arxiv.1811.04029 · pith_short_12: MDPHQ76FLYMS · pith_short_16: MDPHQ76FLYMS3BYN · pith_short_8: MDPHQ76F

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/MDPHQ76FLYMS3BYNEP5K5NNHEI \
  | 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: 60de787fc55e192d870d23faaeb5a7223f945a73ebffd35560f3b95f8223284e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "87ac6080b09aa34880ade866c74d409d59f9f391190db03735dccd3ec46ebde4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-11-09T17:30:04Z",
    "title_canon_sha256": "d631d88da83262cebd92bf04c062fd3b1e2dff0ed6836bf9c441b5922284364f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.04029",
    "kind": "arxiv",
    "version": 1
  }
}