Pith Number

pith:RRGH74M4

pith:2019:RRGH74M4JKQHSRR5QKTHXAZSZM

not attested not anchored not stored refs pending

Realization of a multifrequency celestial reference frame through a combination of normal equation systems

Axel Nothnagel, Maria Karbon

arxiv:1908.11697 v1 · 2019-08-30 · astro-ph.IM · astro-ph.EP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RRGH74M4JKQHSRR5QKTHXAZSZM}

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	2026-07-05T00:09:04.006801Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8c4c7ff19c4aa079463d82a67b8332cb0c9608498727d0839fd58eb97cdef597

Aliases

arxiv: 1908.11697 · arxiv_version: 1908.11697v1 · doi: 10.48550/arxiv.1908.11697 · pith_short_12: RRGH74M4JKQH · pith_short_16: RRGH74M4JKQHSRR5 · pith_short_8: RRGH74M4

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/RRGH74M4JKQHSRR5QKTHXAZSZM \
  | 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: 8c4c7ff19c4aa079463d82a67b8332cb0c9608498727d0839fd58eb97cdef597

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1afab987931336bc2a46d6cd68b5840728cbe1552cc61e8c830159654a926399",
    "cross_cats_sorted": [
      "astro-ph.EP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2019-08-30T12:46:23Z",
    "title_canon_sha256": "8c6e0c04ec42ccd293e0555bcf1647593931777af7a5e418328cd308c6214499"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.11697",
    "kind": "arxiv",
    "version": 1
  }
}