Pith Number

pith:DCAVR2YH

pith:2009:DCAVR2YH3VGN3ZNZZCM66I73EF

not attested not anchored not stored refs pending

Observations of M87 and Hydra A at 90 GHz

B. S. Mason, D. Benford, H. Moseley, J. Aguirre, J. Staguhn, K. Irwin, M. J. Devlin, P. Ade, P. Korngut, S. Dicker, W. D. Cotton

arxiv:0902.3149 v1 · 2009-02-18 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DCAVR2YH3VGN3ZNZZCM66I73EF}

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	2026-05-18T02:14:47.137380Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

188158eb07dd4cdde5b9c899ef23fb2176fea6fd4bc7752eae3e64e88e5fc1e9

Aliases

arxiv: 0902.3149 · arxiv_version: 0902.3149v1 · doi: 10.48550/arxiv.0902.3149 · pith_short_12: DCAVR2YH3VGN · pith_short_16: DCAVR2YH3VGN3ZNZ · pith_short_8: DCAVR2YH

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/DCAVR2YH3VGN3ZNZZCM66I73EF \
  | 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: 188158eb07dd4cdde5b9c899ef23fb2176fea6fd4bc7752eae3e64e88e5fc1e9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "064ebf47e3ffec5b79a14f09e7279594a58dba92420179a19b0fb7fa4bb8a043",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2009-02-18T14:20:35Z",
    "title_canon_sha256": "70d4cd96bd4808e832321bbaddc3df63e56c0b5120cd24abefd42174edb9903e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0902.3149",
    "kind": "arxiv",
    "version": 1
  }
}