Pith Number

pith:I5XLELWI

pith:2017:I5XLELWIVKVFIU7UZVK6ZCVTHR

not attested not anchored not stored refs pending

Absence of Typical Haversian System from the Compact Bone of Some Reptile and Bird Species

Egypt), Egypt (2) Department of Anatomy, Embryology, Faculty of Veterinary Medicine, Fatma Khalil (1) ((1) Department of Histology, Mohamed Abdelsabour-Khalaf (2), Qena, South Valley University, Yasser Ahmed (1)

arxiv:1707.07444 v2 · 2017-07-24 · q-bio.TO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{I5XLELWIVKVFIU7UZVK6ZCVTHR}

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	2026-05-18T00:39:11.760039Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

476eb22ec8aaaa5453f4cd55ec8ab33c6ac82d887c64d9ea680e07d4c650d299

Aliases

arxiv: 1707.07444 · arxiv_version: 1707.07444v2 · doi: 10.48550/arxiv.1707.07444 · pith_short_12: I5XLELWIVKVF · pith_short_16: I5XLELWIVKVFIU7U · pith_short_8: I5XLELWI

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/I5XLELWIVKVFIU7UZVK6ZCVTHR \
  | 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: 476eb22ec8aaaa5453f4cd55ec8ab33c6ac82d887c64d9ea680e07d4c650d299

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "597d53151bcf385cc51086a57d7d624a9b97c199ddd125ec5a5e8f738935f4a8",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/publicdomain/zero/1.0/",
    "primary_cat": "q-bio.TO",
    "submitted_at": "2017-07-24T09:13:20Z",
    "title_canon_sha256": "62a75d2bd897e05c90daacab9afa2410244f9ecabc01593f63a40a0a062a0fa1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1707.07444",
    "kind": "arxiv",
    "version": 2
  }
}