Pith Number

pith:UPWEWUCS

pith:2007:UPWEWUCS4QNXJ6GTSYKH5UEFRL

not attested not anchored not stored refs pending

On accuracy assessment of celestial reference frame VLBI realizations

Zinovy Malkin

arxiv:physics/0703035 v1 · 2007-03-04 · physics.geo-ph · astro-ph · physics.data-an

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UPWEWUCS4QNXJ6GTSYKH5UEFRL}

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	2026-05-18T03:37:27.805991Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a3ec4b5052e41b74f8d396147ed0858afbda98af30ba763b5c68fe47ce30dd6e

Aliases

arxiv: physics/0703035 · arxiv_version: physics/0703035v1 · doi: 10.48550/arxiv.physics/0703035 · pith_short_12: UPWEWUCS4QNX · pith_short_16: UPWEWUCS4QNXJ6GT · pith_short_8: UPWEWUCS

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/UPWEWUCS4QNXJ6GTSYKH5UEFRL \
  | 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: a3ec4b5052e41b74f8d396147ed0858afbda98af30ba763b5c68fe47ce30dd6e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b512d14a72e2fbfe44953ae82276977e8468c9ab5f61f8cc6791ac7db1e87c4e",
    "cross_cats_sorted": [
      "astro-ph",
      "physics.data-an"
    ],
    "license": "",
    "primary_cat": "physics.geo-ph",
    "submitted_at": "2007-03-04T14:22:02Z",
    "title_canon_sha256": "eb50342e845aa9e321d954c84e844891a7694fd4a87a61f41c804f10356041d2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "physics/0703035",
    "kind": "arxiv",
    "version": 1
  }
}