Pith Number

pith:FSFDMEPX

pith:2010:FSFDMEPXPVQENFGAF6VHUAHSJK

not attested not anchored not stored refs pending

Observational evidence for the shrinking of bright maser spots

A. M. S. Richards, J. A. Yates, M. Elitzur

arxiv:1010.4419 v1 · 2010-10-21 · 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{FSFDMEPXPVQENFGAF6VHUAHSJK}

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	2026-05-18T02:05:00.124673Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2c8a3611f77d604694c02faa7a00f24aa40c5bd24b1405cc0b1e33fe0433fa65

Aliases

arxiv: 1010.4419 · arxiv_version: 1010.4419v1 · doi: 10.48550/arxiv.1010.4419 · pith_short_12: FSFDMEPXPVQE · pith_short_16: FSFDMEPXPVQENFGA · pith_short_8: FSFDMEPX

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/FSFDMEPXPVQENFGAF6VHUAHSJK \
  | 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: 2c8a3611f77d604694c02faa7a00f24aa40c5bd24b1405cc0b1e33fe0433fa65

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9f8941976de9ba86405b5f9b340d3e9d09849e303024a18d39d8c752703ab293",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2010-10-21T10:45:57Z",
    "title_canon_sha256": "d2fa19609c53b63c58f5e6ce9d403700d8c7763ef62e64465a61deef418c703d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1010.4419",
    "kind": "arxiv",
    "version": 1
  }
}