ZClassic Blockchain Deep Statistics

Every statistic from 3427 days of blockchain history (Genesis: Nov 6 2016). Computed in 32s from indexed SQLite.

Network Overview

3056897
Block Height
174.6930
Difficulty
9.54 KH/s
Est. Hashrate
10364151.61831153 ZCL
Circulating Supply
90.42%
% of Max Supply
1354735
Total UTXOs

Chain History

Genesis Block
Block 0 — 2016-11-06 03:43:49 UTC
Latest Block
Block 3056897 — 2026-03-27 00:43:40 UTC
Chain Age
3427 days (9.4 years)
Total Blocks
3056836
Total Transactions
5040089
Coinbase / Non-Coinbase
3056842 / 1983247
Avg Txs/Block
1.65
Halvings Occurred
4
Current Block Reward
0.39062500 ZCL
Next Halving
Block 4067001 (1010104 blocks away)

Block Records

Most Transactions in Block
Block 272993 — 2114 txs
Empty Blocks (coinbase only)
2142410 (70.1%)
Lowest Difficulty
1.000000 at Block 2813138
Highest Difficulty
4761314.516845 at Block 269052

Sprout Pool (JoinSplit Privacy)

Sprout was ZClassic's original shielded pool using JoinSplit proofs. vpub_old = transparent→shielded (positive), vpub_new = shielded→transparent (negative).

9
Blocks with Activity
-317.92905956 ZCL
Net Pool Balance
Total Shielded (t→z)
4.68713521 ZCL
Total Unshielded (z→t)
322.61619477 ZCL
First Active Block
Block 1914207 — 2023-03-23 21:16:43 UTC
Last Active Block
Block 2124937 — 2023-10-07 21:04:09 UTC
Largest Single Shielding
Block 1914207 — 2.34361957 ZCL
Largest Single Unshielding
Block 2124879 — 50.00010000 ZCL

Activity by Year

YearBlocksShielded (t→z)Unshielded (z→t)Net Change
202394.68713521322.61619477-317.92905956

Top 20 Largest Transactions (by block)

BlockTimeValueDirection
21248792023-10-07 19:08:13 UTC50.00010000 ZCLUnshielding
21248982023-10-07 19:23:29 UTC50.00010000 ZCLUnshielding
21249092023-10-07 19:34:28 UTC50.00010000 ZCLUnshielding
21249332023-10-07 20:12:47 UTC50.00010000 ZCLUnshielding
21249362023-10-07 20:34:21 UTC50.00010000 ZCLUnshielding
21249372023-10-07 21:04:09 UTC49.99950000 ZCLUnshielding
21248592023-10-07 18:57:23 UTC22.61619477 ZCLUnshielding
19142072023-03-23 21:16:43 UTC2.34361957 ZCLShielding
19907162023-06-02 03:01:37 UTC2.34351564 ZCLShielding

Sapling Pool (Modern Privacy)

Sapling uses Groth16 proofs. Activated at block 382168. Positive value_balance = shielding, negative = unshielding.

163108
Blocks with Activity
-29501.99160971 ZCL
Net Pool Balance
231
Nullifiers
Total Shielded (t→z)
604383.29604420 ZCL
Total Unshielded (z→t)
633885.28765391 ZCL
First Active Block
Block 1150011 — 2021-04-30 12:05:21 UTC
Last Active Block
Block 3055667 — 2026-03-25 22:40:00 UTC
Largest Single Shielding
Block 2622193 — 5000.00010000 ZCL
Largest Single Unshielding
Block 2670693 — 40380.00000000 ZCL

Activity by Year

YearBlocksShielded (t→z)Unshielded (z→t)Net Change
202112.343650000.000000002.34365000
2022846917508.0945834717778.59960596-270.50502249
202380383229028.15466710240884.81115859-11856.65649149
202443240150810.27129782146023.012438144787.25885968
202525231186324.79686761208157.08019712-21832.28332951
2026578420709.6349782021041.78425410-332.14927590

Top 20 Largest Transactions (by block)

BlockTimeValueDirection
26706932025-04-07 20:44:22 UTC40380.00000000 ZCLUnshielding
26706882025-04-07 20:35:39 UTC19999.00000000 ZCLUnshielding
26278662025-02-28 19:42:38 UTC15323.73427500 ZCLUnshielding
26221912025-02-23 19:45:48 UTC10000.00000000 ZCLUnshielding
26521722025-03-22 09:16:52 UTC10000.00000000 ZCLUnshielding
26221932025-02-23 19:49:12 UTC5000.00010000 ZCLShielding
26652642025-04-03 00:44:53 UTC5000.00010000 ZCLShielding
29143632025-11-18 21:25:19 UTC4451.08800000 ZCLUnshielding
26652612025-04-03 00:42:45 UTC4345.00000000 ZCLUnshielding
29338172025-12-06 00:47:00 UTC4288.00010000 ZCLShielding
26652552025-04-03 00:37:00 UTC3000.00010000 ZCLShielding
29061102025-11-11 15:44:19 UTC2290.57829191 ZCLUnshielding
22980042024-03-21 17:05:48 UTC2000.00020000 ZCLShielding
22461842024-01-31 21:37:11 UTC2000.00010000 ZCLShielding
22464282024-02-01 03:23:14 UTC2000.00010000 ZCLShielding
22902332024-03-13 18:45:47 UTC2000.00010000 ZCLShielding
22901852024-03-13 17:26:59 UTC1999.21895000 ZCLShielding
22980112024-03-21 17:12:49 UTC1500.00010000 ZCLShielding
23896632024-06-20 17:05:23 UTC1355.68990000 ZCLUnshielding
19504692023-04-26 12:27:16 UTC1158.64112239 ZCLShielding

UTXO Set Distribution

1354735
Total UTXOs
254578.00000000
Largest UTXO
7.65031656
Average UTXO

Size Breakdown

RangeCount% of UTXOs
Dust (< 0.001 ZCL)279462.1%
Small (0.001 - 1 ZCL)107935379.7%
Medium (1 - 10 ZCL)21099815.6%
Large (10 - 100 ZCL)317152.3%
Whale (100+ ZCL)47230.3%

Oldest Unspent UTXOs

BlockTimeValueTXID
02016-11-06 03:43:49 UTC0.78084789 ZCL114A4E0A...
02016-11-06 03:43:49 UTC0.00625000 ZCL669C3E9F...
02016-11-06 03:43:49 UTC240.64979800 ZCL601DB017...
02016-11-06 03:43:49 UTC10.88271264 ZCLCB02FF60...
12016-11-06 06:37:22 UTC12.50000000 ZCL13E63618...
32016-11-06 06:48:26 UTC12.50000000 ZCLC6F990C3...
852016-11-06 07:21:04 UTC12.50000000 ZCL2D79C611...
1602016-11-06 08:03:41 UTC12.50000000 ZCL41C44269...
1672016-11-06 08:07:15 UTC12.50000000 ZCL1B8CAEC8...
1872016-11-06 08:22:24 UTC12.50000000 ZCLEC983781...
1932016-11-06 08:25:15 UTC12.50000000 ZCL45EC7660...
2672016-11-06 10:11:22 UTC10.00020000 ZCLC29F37F4...
2672016-11-06 10:11:22 UTC2.50000000 ZCLC29F37F4...
2692016-11-06 10:14:10 UTC10.00010000 ZCLC58B504A...
2692016-11-06 10:14:10 UTC2.50000000 ZCLC58B504A...
2892016-11-06 10:39:27 UTC12.50000000 ZCL6460BC6B...
2992016-11-06 10:56:41 UTC12.50020000 ZCLF0A07964...
3032016-11-06 11:05:37 UTC10.00020000 ZCL6A0C0A92...
3032016-11-06 11:05:37 UTC2.50000000 ZCL6A0C0A92...
3262016-11-06 11:53:21 UTC12.50030000 ZCLB41282C7...

Top 20 Largest Unspent Outputs

ValueBlockTXID
254578.00000000 ZCL20883606D17BE27...
172089.56240892 ZCL67530978DE2958...
169995.00000000 ZCL85325825F49DD7...
165951.99990000 ZCL4384611CE1DE3A...
151195.08649000 ZCL1835954F7717417...
119060.35465142 ZCL30534555AAB343A...
107671.99999639 ZCL853242F8CBAE98...
104166.03704102 ZCL112399225A611F5...
100000.00000000 ZCL48873845C49367...
100000.00000000 ZCL877022884053B8...
100000.00000000 ZCL488738367524DA...
100000.00000000 ZCL48873841599EE1...
89998.98999507 ZCL29101453600C23A...
86705.53147536 ZCL290893716545A9A...
81714.46182133 ZCL29077875560A670...
71000.00000000 ZCL235903403075757...
60000.00000000 ZCL85333774D435E1...
60000.00000000 ZCL853337E01F61EC...
60000.00000000 ZCL853337404CFC31...
60000.00000000 ZCL8533335AA21FB1...
Unspent Coinbase UTXOs
115842
Unspent Coinbase Value
19247.65373689 ZCL
Oldest UTXO From
Block 0

Address Distribution

69917
Addresses with UTXOs
69906
Non-Zero Balances
Top 10 Hold
2987745.96816454 ZCL (28.8%)
Top 100 Hold
6782172.19422120 ZCL (65.4%)

Top 20 Richest Addresses

#AddressBalanceUTXOs% of Supply
1t1XN3E2aJgqpPpv8PS8bNBCivGSXVpvttef798819.10000000 ZCL5597.71%
2t1ZE3jRz9jUau3SnKBVrmrZe4SDEpxF3HqH439006.30000000 ZCL22144.24%
3t1ZefiGenesisBootstrapBURNxxxyfs71k390096.75420564 ZCL2463.76%
4t1R5inS8iXCrboNFhx1X2mXmyGFgXs474yG242305.68306890 ZCL82882.34%
5t1XKhLy8o8yZKGnryF9Gnc3pKdi5T9s6RQ1214469.03500000 ZCL302.07%
6t1ZgTysJBynrxe46XYn2KBUdetqon8AwzxH198575.49589000 ZCL241.92%
7t1SQhTLLurP8CHnXrKiiW3vT9NvRER7TDH7193715.00000000 ZCL211.87%
8t1ZDfGwHjNe4S525osetZBErAycxkApy8tr172089.60000000 ZCL21.66%
9t1TMGvxW5ev5tPSKN1SWyfjmgcprSHeVz6M169995.00000000 ZCL11.64%
10t1e4jUwDL63V5Wim7eqrwSjLBoTnZf1iwv4168674.00000000 ZCL181.63%
11t1T6czJAQTuogeFYViEPXVWzhDzubafPxpL165952.00000000 ZCL21.60%
12t1UNs6gZYpZFCntzNwC4dtNFgmzNT9TA9WW156195.08649000 ZCL21.51%
13t1XBRKNy9aL9exHPx8LqEHBEDyZX4G8UHjC133200.00000000 ZCL321.29%
14t1cK9vMcvb5rzDTdk1jkmLHtvNDMEHcqLiv107671.99999639 ZCL11.04%
15t1LtmpET3327PCTcKVDHiYoxNx6mxdVs999104169.03704102 ZCL31.01%
16t1K1k9vQ3XgNPrkdnQmPAx88KTDqvqB5sF496528.67000000 ZCL22010.93%
17t1SLoi6ct7E2LztbnLRMYV7RGMou4BgyPsA90888.80176064 ZCL240.88%
18t1We2McnyvkJi3fMdPNM3XWDtYngfgAuFrL89998.98999507 ZCL10.87%
19t1JWPmPG5uqHBfZipxgbRN1iqELdZ9vNbfo86705.53147536 ZCL10.84%
20t1PHphfpASFm78qvfdC26qvUWqByYWv46BD83537.09664519 ZCL453450.81%

ZSLP Tokens & OP_RETURN Data

4477
OP_RETURN Outputs
4301
ZSLP OP_RETURNs
873
Token Types
7295
ZSLP Transfers

View All ZSLP Tokens →

Transaction I/O Deep Stats

Per-output and per-input data from the full chain index.

11324651
Total Outputs Ever
9965151
Total Inputs Ever
1.14
Output/Input Ratio
P2PKH Outputs
11321828 (100.0%)
P2SH Outputs
2823 (0.0%)
Other Output Types
0
Largest Output Ever
299052.00000000 ZCL
Total Value Ever Moved
360412304.54005011 ZCL

Shielded Operations Detail

Per-transaction shielded data from joinsplits, sapling_spends, sapling_outputs, and sprout_nullifiers tables.

527999
Total JoinSplits
439101
Total Sapling Spends
1050074
Total Sapling Outputs
Sprout Nullifiers
1055998
Total vpub_old (t→z via Sprout)
8538304.81468471 ZCL
Total vpub_new (z→t via Sprout)
8525140.69092762 ZCL
Unique Sapling Anchors
162874
Sapling Spend/Output Ratio
0.4182

SHA3-256 Integrity Chain

Cryptographic chain of block data hashes for tamper detection.

0
Total Checkpoints
0 – 0
Chain Coverage (Height)
Latest SHA3 Hash
N/A

Every block's data is chained via SHA3-256 hash. The integrity chain covers H(prev_hash || height || block_hash || sprout_value || sapling_value || num_tx || num_joinsplits || num_sapling_spends || num_sapling_outputs). Verify any block by recomputing from genesis.

Chain Firsts & Records

Milestones and extremes from the full chain index.

MilestoneBlockDetail
First Non-Coinbase Transaction241First user-to-user transfer
First JoinSplit (Sprout Shielding)241First shielded transaction
First Sapling Spend476978First Groth16 shielded spend
First OP_RETURN375159First data-carrying output
First ZSLP Token652947First token genesis
Most JoinSplits in Block59603480 JoinSplit operations
Most Sapling Outputs in Block5204152092 Sapling notes created
Fastest Block Time181 seconds
Slowest Block Time585322207811 seconds (57.7 hours)

Transaction Volume by Year

YearBlocksTotal TxsAvg Tx/Block
201632028868192.71
20172075005193282.50
20182063577149313.46
20192049844914872.40
20203625345797771.60
20214150565287581.27
20224006805324491.33
20233865135475621.42
20243502744183401.19
20253967115160741.30
2026941991045691.11

UTXO Age Distribution

Grouped by creation block range.

Block RangeAgeUTXOsValue (ZCL)% of Supply
0K-100K~14.3y11310633007.675727610.32%
100K-200K~13.8y2621025905.925884130.25%
200K-300K~13.3y316717265153.930229972.56%
300K-400K~12.9y217584693769.213152596.69%
400K-500K~12.4y525901083236.1071265910.45%
500K-600K~11.9y628931034307.066701389.98%
600K-700K~11.4y2398521178140.3127045311.37%
700K-800K~11.0y48317323155.669000303.12%
800K-900K~10.5y273611464608.5441974114.13%
900K-1000K~10.0y2379983982.954545840.81%
1000K-1100K~9.5y24159447173.007331304.31%
1100K-1200K~9.1y6670241858.548448202.33%
1200K-1300K~8.6y213988148.075412750.85%
1300K-1400K~8.1y3958107776.762481121.04%
1400K-1500K~7.6y330950039.437078710.48%
1500K-1600K~7.2y272673187.441137620.71%
1600K-1700K~6.7y700076052.776460080.73%
1700K-1800K~6.2y21622113397.080066321.09%
1800K-1900K~5.7y13049196942.205409301.90%
1900K-2000K~5.3y1566238150.191088700.37%
2000K-2100K~4.8y4957333452.837448733.22%
2100K-2200K~4.3y9839157736.111195441.52%
2200K-2300K~3.8y11988106579.870459381.03%
2300K-2400K~3.4y8331248509.166242232.40%
2400K-2500K~2.9y447055105.834089710.53%
2500K-2600K~2.4y2075140954.918123151.36%
2600K-2700K~1.9y60830141128.229435941.36%
2700K-2800K~1.5y19093255273.631323992.46%
2800K-2900K~11mo794362070.945936883.49%
2900K-3000K~6mo2318604369.730075915.83%
3000K-3100K~1mo1317340977.419795723.29%
View Full HODL Wave Chart →

9-year UTXO age distribution from genesis

Difficulty

125152180208236Difficulty3056335305641930565033056587305667130567553056839
112133154175197Difficulty3052965305356530541653054765305536530559653056565
46.175.0104133162Difficulty3040049304264130452333047825305041730530093055601
2.7256.3110163217Difficulty2851913288344929149852946521297805730095933041129
1.0026.771419K510KDifficulty764225349549934861452018191055023690822827614

Hashrate

6.8K8.3K9.8K11K13KH/s3056335305641930565033056587305667130567553056839
6.1K7.3K8.4K9.6K11KH/s3052965305356530541653054765305536530559653056565
2.5K4.1K5.7K7.3K8.8KH/s3040049304264130452333047825305041730530093055601
1483.1K6.0K8.9K12KH/s2851913288344929149852946521297805730095933041129
54.61.5K39K1.0M27.8MH/s764225349549934861452018191055023690822827614

Sprout Value Flow

0.00000.2500.5000.7501.00ZCL3056335305641930565033056587305667130567553056839
0.00000.2500.5000.7501.00ZCL3052965305356530541653054765305536530559653056565
0.00000.2500.5000.7501.00ZCL3040049304264130452333047825305041730530093055601
0.00000.2500.5000.7501.00ZCL2851913288344929149852946521297805730095933041129
0.0100.0390.1530.5992.34ZCL764225349549934861452018191055023690822827614

Sapling Value Flow

0.00000.2500.5000.7501.00ZCL3056335305641930565033056587305667130567553056839
0.0100.0790.6315.0139.8ZCL3052965305356530541653054765305536530559653056565
0.0100.1141.3014.8169ZCL3040049304264130452333047825305041730530093055601
0.0100.2586.641714.4KZCL2851913288344929149852946521297805730095933041129
0.0100.43919.384737KZCL764225349549934861452018191055023690822827614

Transaction Volume

0.0100.0650.4242.7618.0Transactions3056335305641930565033056587305667130567553056839
71.084.097.0110123Transactions3052965305356530541653054765305536530559653056565
429446464481498Transactions3040049304264130452333047825305041730530093055601
5.7K5.8K5.9K6.1K6.2KTransactions2851913288344929149852946521297805730095933041129
84K155K226K297K368KTransactions764225349549934861452018191055023690822827614