Pith Number

pith:4BRZTFKP

pith:2012:4BRZTFKPONK7SUPCBKWOA2HCBX

not attested not anchored not stored refs pending

VLBI for Gravity Probe B. I. Overview

D. E. Lebach, I. I. Shapiro, J.-F. Lestrade, M. F. Bietenholz, M. I. Ratner, N. Bartel, R. R. Ransom

arxiv:1204.4630 v1 · 2012-04-20 · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4BRZTFKPONK7SUPCBKWOA2HCBX}

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	2026-05-18T01:57:48.152460Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e06399954f7355f951e20aace068e20dee98d9dbcd4636f5de935b78a472bb1d

Aliases

arxiv: 1204.4630 · arxiv_version: 1204.4630v1 · doi: 10.48550/arxiv.1204.4630 · pith_short_12: 4BRZTFKPONK7 · pith_short_16: 4BRZTFKPONK7SUPC · pith_short_8: 4BRZTFKP

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/4BRZTFKPONK7SUPCBKWOA2HCBX \
  | 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: e06399954f7355f951e20aace068e20dee98d9dbcd4636f5de935b78a472bb1d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "49fa20e2a94fbbfc92af88504e083baed16ebba0f40181bdbad7b6c051e54d13",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2012-04-20T13:48:23Z",
    "title_canon_sha256": "3b5df43f0fa1cc47a930e487f9329bac5df3911394afab41640ec034f957b7af"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.4630",
    "kind": "arxiv",
    "version": 1
  }
}