Pith Number

pith:7HM3Z4LQ

pith:2012:7HM3Z4LQHRSYYER4WJG43YNAGV

not attested not anchored not stored refs pending

IVOA Recommendation: Spectrum Data Model 1.1

Arnold Rots, Bruno Rino, Data Model Working Groups, Doug Tody, Frank Valdes, Inga Kamp, Jesus Salgado, Jonathan McDowell, Kelly McCusker, Markus Dolensky, Omar Laurino, Pavlos Protopapas, Petr Skoda, Randy Thompson, Sebastien Derriere, Tamas Budavari, the IVOA Data Access Layer

arxiv:1204.3055 v1 · 2012-04-13 · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7HM3Z4LQHRSYYER4WJG43YNAGV}

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	2026-05-17T23:45:41.803410Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f9d9bcf1703c658c123cb24dcde1a0356f46228cfb7483ba9d3232fb003032b6

Aliases

arxiv: 1204.3055 · arxiv_version: 1204.3055v1 · doi: 10.48550/arxiv.1204.3055 · pith_short_12: 7HM3Z4LQHRSY · pith_short_16: 7HM3Z4LQHRSYYER4 · pith_short_8: 7HM3Z4LQ

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/7HM3Z4LQHRSYYER4WJG43YNAGV \
  | 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: f9d9bcf1703c658c123cb24dcde1a0356f46228cfb7483ba9d3232fb003032b6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "49a12cddeea23dcb661bf100c3b0462a0aedf9df858e9f752d32bf811f98c54b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2012-04-13T17:19:51Z",
    "title_canon_sha256": "44b5bd8f37c6bf0f33e79ac5857e02006927245ce08c3056bc1d82e20342ca21"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.3055",
    "kind": "arxiv",
    "version": 1
  }
}