Pith Number

pith:WY7PVTSZ

pith:2016:WY7PVTSZTSLNRXPHZYVP7QB4YQ

not attested not anchored not stored refs pending

Tycho Brahe, Abu Mashar, and the comet beyond Venus (ninth century A.D.)

Daniela Luge (U Jena), Markus Mugrauer, Paul Kunitzsch (LMU Munich), Ralph Neuhaeuser (U Jena), Rob van Gent (U Utrecht)

arxiv:1607.05032 v1 · 2016-07-18 · physics.hist-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WY7PVTSZTSLNRXPHZYVP7QB4YQ}

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	2026-05-18T01:10:56.086009Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b63eface599c96d8dde7ce2affc03cc4273ca04228b8c1cc2fd0baeda27e7e87

Aliases

arxiv: 1607.05032 · arxiv_version: 1607.05032v1 · doi: 10.48550/arxiv.1607.05032 · pith_short_12: WY7PVTSZTSLN · pith_short_16: WY7PVTSZTSLNRXPH · pith_short_8: WY7PVTSZ

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/WY7PVTSZTSLNRXPHZYVP7QB4YQ \
  | 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: b63eface599c96d8dde7ce2affc03cc4273ca04228b8c1cc2fd0baeda27e7e87

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "771e79282b434eb61597bdd7327bc1329f36b951a6238ec2d13cd4db3aac6dbb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.hist-ph",
    "submitted_at": "2016-07-18T11:58:14Z",
    "title_canon_sha256": "d7ff5cbbc5526561a022b69abd0cea8b2c6826eda20a6fd155ad412fb96e1700"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1607.05032",
    "kind": "arxiv",
    "version": 1
  }
}