Pith Number

pith:U2UE43BJ

pith:2009:U2UE43BJ4VVE7D5X7RYNU57GOT

not attested not anchored not stored refs pending

Neutrino Mass: Mechanisms and Models

Ernest Ma (UC Riverside)

arxiv:0905.0221 v1 · 2009-05-03 · hep-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{U2UE43BJ4VVE7D5X7RYNU57GOT}

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	2026-07-04T15:42:07.901633Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a6a84e6c29e56a4f8fb7fc70da77e674ee79e90cfb5396f791f3b15a02fa4db3

Aliases

arxiv: 0905.0221 · arxiv_version: 0905.0221v1 · doi: 10.48550/arxiv.0905.0221 · pith_short_12: U2UE43BJ4VVE · pith_short_16: U2UE43BJ4VVE7D5X · pith_short_8: U2UE43BJ

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/U2UE43BJ4VVE7D5X7RYNU57GOT \
  | 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: a6a84e6c29e56a4f8fb7fc70da77e674ee79e90cfb5396f791f3b15a02fa4db3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cfd9bf341d026bf4e48d0258beefb4ed316071b5554ffac1cea5e1283956456b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-ph",
    "submitted_at": "2009-05-03T16:10:31Z",
    "title_canon_sha256": "05c6f1f8a3806e3ca8567a6f59a5aba2456699cbe52a24fa59fc7cfdef7a7e44"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.0221",
    "kind": "arxiv",
    "version": 1
  }
}