Pith Number

pith:D3O7GFR5

pith:2025:D3O7GFR5CJKOPKDURNKENNNQYC

not attested not anchored not stored refs pending

Variations of absolute source positions determined from quad-band VLBI observations

Ming Hui Xu, Patrick Charlot

arxiv:2501.18276 v1 · 2025-01-30 · 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{D3O7GFR5CJKOPKDURNKENNNQYC}

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	2026-07-05T10:07:32.057569Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1eddf3163d1254e7a8748b5446b5b0c090c417d382e3d21e9237f2a106f76090

Aliases

arxiv: 2501.18276 · arxiv_version: 2501.18276v1 · doi: 10.48550/arxiv.2501.18276 · pith_short_12: D3O7GFR5CJKO · pith_short_16: D3O7GFR5CJKOPKDU · pith_short_8: D3O7GFR5

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/D3O7GFR5CJKOPKDURNKENNNQYC \
  | 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: 1eddf3163d1254e7a8748b5446b5b0c090c417d382e3d21e9237f2a106f76090

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3af30ce3a2e00fcfe040cd205a19d8cdf1fb375cda7aebbeba6937ea149fd9a2",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2025-01-30T11:28:40Z",
    "title_canon_sha256": "f24939670736307ed38cc307c7ec31537b06ce280cda03eab374674632379b4b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2501.18276",
    "kind": "arxiv",
    "version": 1
  }
}