Pith Number

pith:IPIYGHAH

pith:2011:IPIYGHAHEPVUQTOTU4DJYLW3M6

not attested not anchored not stored refs pending

Optical Spectra of Candidate Southern Hemisphere International Celestial Reference Frame (ICRF) radio sources

D. L. Jauncey, H. M. Johnston, L. Christensen, O. Titov, R. W. Hunstead

arxiv:1109.1034 v1 · 2011-09-06 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IPIYGHAHEPVUQTOTU4DJYLW3M6}

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	2026-05-18T02:00:39.364626Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

43d1831c0723eb484dd3a7069c2edb679cb2a5458ee06f37fce6e8ee86d81c41

Aliases

arxiv: 1109.1034 · arxiv_version: 1109.1034v1 · doi: 10.48550/arxiv.1109.1034 · pith_short_12: IPIYGHAHEPVU · pith_short_16: IPIYGHAHEPVUQTOT · pith_short_8: IPIYGHAH

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/IPIYGHAHEPVUQTOTU4DJYLW3M6 \
  | 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: 43d1831c0723eb484dd3a7069c2edb679cb2a5458ee06f37fce6e8ee86d81c41

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4af05912d1fbda0379194a026a9b38401139124eed28a0476a447d0ffefeaea6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-09-06T00:42:41Z",
    "title_canon_sha256": "a73e15a585df2bb11069d153d6e53c261a390f5b0dc6ce8e37b08984be97876e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.1034",
    "kind": "arxiv",
    "version": 1
  }
}