Pith Number

pith:EWRK27XA

pith:2012:EWRK27XAQEAGEXKAIIDWT75TRL

not attested not anchored not stored refs pending

The Extended Optical Disk of M101

Chelsea Spengler, Chris Mihos, Craig Rudick, John Feldmeier, Paul Harding

arxiv:1211.3095 v2 · 2012-11-13 · astro-ph.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EWRK27XAQEAGEXKAIIDWT75TRL}

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	2026-05-18T01:53:16.040466Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

25a2ad7ee08100625d40420769ffb38ac0742f54d075428b66d490d09339d573

Aliases

arxiv: 1211.3095 · arxiv_version: 1211.3095v2 · doi: 10.48550/arxiv.1211.3095 · pith_short_12: EWRK27XAQEAG · pith_short_16: EWRK27XAQEAGEXKA · pith_short_8: EWRK27XA

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/EWRK27XAQEAGEXKAIIDWT75TRL \
  | 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: 25a2ad7ee08100625d40420769ffb38ac0742f54d075428b66d490d09339d573

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "032cdd85f5d87b9ae5ebf03bb9af5307a61dab0a3544476d6aa350a1c50ab8a6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-11-13T19:57:56Z",
    "title_canon_sha256": "d8667c1a64c38010bddc2b9296bb1ea83d14c3bf809d138a289214e766f39331"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.3095",
    "kind": "arxiv",
    "version": 2
  }
}