Pith Number

pith:W5EHECTF

pith:2017:W5EHECTFHELC7IMUBCXMQ72WBU

not attested not anchored not stored refs pending

A study of ancient Khmer ephemerides

Fran\c{c}ois Vernotte, Satyanad Kichenassamy

arxiv:1709.09620 v1 · 2017-09-27 · physics.hist-ph · math.HO · 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{W5EHECTFHELC7IMUBCXMQ72WBU}

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	2026-05-18T00:34:09.341034Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b748720a6539162fa19408aec87f560d0fdd97b42e6fe21a3f4d8706e53e9163

Aliases

arxiv: 1709.09620 · arxiv_version: 1709.09620v1 · doi: 10.48550/arxiv.1709.09620 · pith_short_12: W5EHECTFHELC · pith_short_16: W5EHECTFHELC7IMU · pith_short_8: W5EHECTF

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/W5EHECTFHELC7IMUBCXMQ72WBU \
  | 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: b748720a6539162fa19408aec87f560d0fdd97b42e6fe21a3f4d8706e53e9163

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "61e60974a35bcc1a0dda6dee11738c28e1d52ad73163155db184ecde22e6e958",
    "cross_cats_sorted": [
      "math.HO",
      "physics.data-an"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.hist-ph",
    "submitted_at": "2017-09-27T16:52:20Z",
    "title_canon_sha256": "d9e28e20a713830ce28c17ea73a8ec170ee10c9c56fefbce13b0fb8787dfec67"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.09620",
    "kind": "arxiv",
    "version": 1
  }
}