Pith Number

pith:YDB6ZXWI

pith:2010:YDB6ZXWIVREEBHXFPYZHBH6763

not attested not anchored not stored refs pending

Peak into the Past - An Archaeo-Astronomy Summer School

D. Brown, N. Neale, R. Francis

arxiv:1009.5515 v2 · 2010-09-28 · physics.ed-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{YDB6ZXWIVREEBHXFPYZHBH6763}

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	2026-05-18T04:01:00.033002Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c0c3ecdec8ac48409ee57e32709fdff6d7e00ea944e12485cf551ccc4335bb2a

Aliases

arxiv: 1009.5515 · arxiv_version: 1009.5515v2 · doi: 10.48550/arxiv.1009.5515 · pith_short_12: YDB6ZXWIVREE · pith_short_16: YDB6ZXWIVREEBHXF · pith_short_8: YDB6ZXWI

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/YDB6ZXWIVREEBHXFPYZHBH6763 \
  | 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: c0c3ecdec8ac48409ee57e32709fdff6d7e00ea944e12485cf551ccc4335bb2a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "90edd01dc9e524be3cb7c9e5a2ec3d22ba9d2ecb114c7f66039c01b6c1711c75",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2010-09-28T10:12:16Z",
    "title_canon_sha256": "eb2a84c23706602bdd641667437f2865abd430fe38e0358274a3926fe356f2f8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1009.5515",
    "kind": "arxiv",
    "version": 2
  }
}