simplify: remove premature SRC-101 scaffolding, clean up stamp helper

- Remove DigitalArtifactType.Src101, ordpool_src101 flag, analyser
  switch case, hasAnyOrdpoolFlag check, ParsedSrc101 type file, and
  index.ts export. All were dead code -- no parser creates Src101 type
  (all 1951 mainnet SRC-101 use ARC4 multisig, not OLGA P2WSH).
  Per CLAUDE.md: don't claim support without a real mainnet tx.
- Move STAMP_PREFIX to module level (consistency with CNTRPRTY_PREFIX)
- Use STAMP_PREFIX[n] references instead of hardcoded hex bytes

Author: hans-crypto

src/digital-artifact-analyser.service.ts

@@ -446,10 +446,6 @@ export class DigitalArtifactAnalyserService {
         flags |= OrdpoolTransactionFlags.ordpool_src721;
         break;
 
-      case DigitalArtifactType.Src101:
-        flags |= OrdpoolTransactionFlags.ordpool_src101;
-        break;
-
       case DigitalArtifactType.Inscription:
         const inscription = artifact as ParsedInscription;
         flags |= OrdpoolTransactionFlags.ordpool_inscription;
@@ -565,8 +561,7 @@ export class DigitalArtifactAnalyserService {
       isFlagSetOnTransaction(tx, OrdpoolTransactionFlags.ordpool_brc20) ||
       isFlagSetOnTransaction(tx, OrdpoolTransactionFlags.ordpool_src20) ||
       isFlagSetOnTransaction(tx, OrdpoolTransactionFlags.ordpool_stamp) ||
-      isFlagSetOnTransaction(tx, OrdpoolTransactionFlags.ordpool_src721) ||
-      isFlagSetOnTransaction(tx, OrdpoolTransactionFlags.ordpool_src101);
+      isFlagSetOnTransaction(tx, OrdpoolTransactionFlags.ordpool_src721);
   }
 
 

src/index.ts

@@ -46,7 +46,6 @@ export * from './types/parsed-runestone';
 export * from './types/parsed-src20';
 export * from './types/parsed-stamp';
 export * from './types/parsed-src721';
-export * from './types/parsed-src101';
 export * from './types/parser-options';
 export * from './types/bitcoin-rpc';
 export * from './types/transaction-simple';

src/stamp/stamp-parser.service.helper.ts

@@ -1,5 +1,8 @@
 import { bigEndianBytesToNumber, hexToBytes, concatUint8Arrays } from '../lib/conversions';
 
+// "stamp:" in ASCII (hex: 7374616d703a) -- used by SRC-20/SRC-101 OLGA encoding
+const STAMP_PREFIX = new Uint8Array([0x73, 0x74, 0x61, 0x6d, 0x70, 0x3a]);
+
 /**
  * Extracts raw file data from OLGA P2WSH outputs.
  *
@@ -62,12 +65,12 @@ export function extractOlgaData(
   // Extract the file data (skip 2-byte length prefix)
   const fileData = allBytes.subarray(2, 2 + fileLength);
 
-  // Check for "stamp:" prefix (0x7374616d703a) -- used by SRC-20/SRC-101 OLGA
+  // Check for "stamp:" prefix -- used by SRC-20/SRC-101 OLGA encoding.
   // Counterparty-issued OLGA stamps do NOT have this prefix.
-  const STAMP_PREFIX = new Uint8Array([0x73, 0x74, 0x61, 0x6d, 0x70, 0x3a]); // "stamp:"
   if (fileData.length > STAMP_PREFIX.length &&
-      fileData[0] === 0x73 && fileData[1] === 0x74 && fileData[2] === 0x61 &&
-      fileData[3] === 0x6d && fileData[4] === 0x70 && fileData[5] === 0x3a) {
+      fileData[0] === STAMP_PREFIX[0] && fileData[1] === STAMP_PREFIX[1] &&
+      fileData[2] === STAMP_PREFIX[2] && fileData[3] === STAMP_PREFIX[3] &&
+      fileData[4] === STAMP_PREFIX[4] && fileData[5] === STAMP_PREFIX[5]) {
     // Strip the stamp: prefix
     return fileData.subarray(STAMP_PREFIX.length);
   }

src/types/digital-artifact.ts

@@ -3,7 +3,6 @@ export enum DigitalArtifactType {
   Src20 = 'Src20',
   Stamp = 'Stamp',
   Src721 = 'Src721',
-  Src101 = 'Src101',
   Cat21 = 'Cat21',
   Runestone = 'Runestone',
   Atomical = 'Atomical',

src/types/ordpool-transaction-flags.ts

@@ -42,7 +42,6 @@ export const OrdpoolTransactionFlags = {
 
   ordpool_stamp:                0b00001000_00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000n,
   ordpool_src721:               0b00010000_00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000n,
-  ordpool_src101:               0b00100000_00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000_00000000n,
 };
 
 export type OrdpoolTransactionFlag = typeof OrdpoolTransactionFlags[keyof typeof OrdpoolTransactionFlags];