Pith Number

pith:FCR36AIR

pith:2018:FCR36AIRWAH66MGKMCKAGNWMD5

not attested not anchored not stored refs pending

Reconstruction of the evolutionary history of gene gains and losses since the last universal common ancestor

Haiming Tang, Haoran Xia, Paul Thomas

arxiv:1802.06035 v1 · 2018-02-16 · q-bio.PE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FCR36AIRWAH66MGKMCKAGNWMD5}

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	2026-05-18T00:23:10.087561Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

28a3bf0111b00fef30ca60940336cc1f4f3f4eea6a704740e32199e8ad39f13e

Aliases

arxiv: 1802.06035 · arxiv_version: 1802.06035v1 · doi: 10.48550/arxiv.1802.06035 · pith_short_12: FCR36AIRWAH6 · pith_short_16: FCR36AIRWAH66MGK · pith_short_8: FCR36AIR

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/FCR36AIRWAH66MGKMCKAGNWMD5 \
  | 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: 28a3bf0111b00fef30ca60940336cc1f4f3f4eea6a704740e32199e8ad39f13e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "07cf2f51f28eda97d1f91004ed00ae7b948d1e54034fc45f0ba1f1166f75ad2c",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2018-02-16T17:20:09Z",
    "title_canon_sha256": "e28d78917a0c87361c6140527cce62905c3dd2333ae5bae76443b7a11c98c003"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.06035",
    "kind": "arxiv",
    "version": 1
  }
}