Arqma Blockchain Explorer

(No Javascript | No Cookies | No Web Analytics Trackers | No Images | Open Sourced)

Server Time: 2026-04-04 12:31:03 | Transaction Pool | Autorefresh is OFF | Go to stagenet explorer | Go to mainnet explorer

Network difficulty: 377000156 | Hard fork: v19 | Hash rate: 3.142 MH/s | Staking Requirement: 100000.000000000 ARQ | Fee: 0.000000050/byte + 0.000090000/output | Median block size limit: 1024.00 kB | Data From 00:00:54 [h:m:s] ago

TX Types Legend: Registration: 🏁 | Contribution: ⚑ | Recommission: 👍 | Decommission: 👎 | Deregister: 🚫 | IP Change Penalty: 📋 | Stake Unlock: 🔓

Arqma emission (fees) is 37247889.239012659 (1023.106723509) as of 1916835 block

Transaction Pool

(No Of TXs: 1, Size: 4.4072 kB, Updated every 5 seconds)

Age [HH:MM:SS] Type Transaction Hash Fee/Per kB In/Out TX Size [kB]
00:00:54 d604856521494dbfbe0c9fdd55b9892039ff120c970a4e40ecf59945b51d16e9 0.0004/0.0001 7/2 4.41

Transactions In Older Blocks

(Median size of 100 blocks: 1024.00 kB)

Height Age [y:d:h:m:s] Size [kB] Type Transaction Hash Fee Outputs In/Out TX Size [kB]
1300015 02:186:07:57:39 0.0996 fed7a1aaee9450bcdff40f0ad465a052fa5daa21e736f407238530bf6cdc069b N/A 12.375649368 0/1 0.0996
1300014 02:186:08:00:09 2.7373 4047d4f64bee10f6308a5eb102c2555200db7b64c7018bc97c9a4df9009c8317 N/A 12.375657959 0/1 0.0996
5ebe336841207b918572657a0d6df0e171759e877d88a575a2dcef2f57c14ba6 0.000002690 ? 2/2 2.6377
1300013 02:186:08:04:01 0.0996 99af2795b012d5f9f7f217ce69467e92ee906a0f5d0035c1cdbcb81b244769b3 N/A 12.375661170 0/1 0.0996
1300012 02:186:08:04:40 0.0996 44e441b33f3048d05f784deeb70c30214ffab32bf1cd35e6081ab857c7ad1472 N/A 12.375667071 0/1 0.0996
1300011 02:186:08:05:27 0.0996 9acca89f38b1ed03125d082987dba8ae107aa8a567688e84044936943d3ce65c N/A 12.375672972 0/1 0.0996
1300010 02:186:08:09:55 0.0996 35641410d80466eb3de3bb2c7acc65549ec4f80bba26ba6387f6ae51e8c2e4ab N/A 12.375678874 0/1 0.0996
1300009 02:186:08:11:33 0.0996 e5bc02999119937c22914005dc5d03b7f40d9176ba816243a5e17852f1a29aff N/A 12.375684775 0/1 0.0996
1300008 02:186:08:12:23 5.3770 946ffae657d17765950c6e6302ce5b4a28289c21ce529ab6dfe730becc8faae4 N/A 12.375696046 0/1 0.0996
f78155b1eb219cff6f0ea3052f81e42f500b559e5338296b50ade43c7004abc6 0.000002690 ? 2/2 2.6436
7edc2302869fe6a0df5c9a71585a3c5aa5d798ddd8e9e4c005c39c28b267191c 0.000002680 ? 2/2 2.6338
1300007 02:186:08:16:35 4.3496 b9fd4c3f2a02cf1a73b53c17cc78506cb65c11fdf15ae7b3699cdd76705713c8 N/A 12.375700927 0/1 0.0996
c6f49fcc60a32e16181dab9dbfc6b0c3c7356492cb025a216581a0e502b7a8f1 0.000004350 ? 4/2 4.2500
1300006 02:186:08:27:40 0.0996 10102160902677f9424fd2adde3dbf99df18cc5b34dcc53c7fe658eb38bf9fd4 N/A 12.375702478 0/1 0.0996
1300005 02:186:08:31:05 0.0996 13d742545cd4b0f8008cb9d0c0a05a072e35db0957571e18da727420d9319099 N/A 12.375708379 0/1 0.0996
1300004 02:186:08:31:30 5.9736 92c911307e1d418613f606e82079637b611f6db61b38b95ccad745c7b0fa869c N/A 12.375720291 0/1 0.0996
06830eeed6fd44946ac315eb7f75698c0fb711e60107bc146a4b9ab774414acf 0.000006010 ? 6/2 5.8740
1300003 02:186:08:37:18 0.0996 cd12f677804d3c59587cf95b763c5e834451b6e6e71a04aeb3237fd110a5b2d3 N/A 12.375720182 0/1 0.0996
1300002 02:186:08:41:18 0.0996 9fb296381257c0e8b549a9d6c987047568435322def8ccf2703571135beb934f N/A 12.375726083 0/1 0.0996
1300001 02:186:08:49:11 20.9482 3656b539b9ccc73ef587ebbfaf8a84a75647ee74d82be662dc3e41418b047fb5 N/A 12.375753324 0/1 0.0996
b4d527b880c609abf74ac32e0c09e71ce4a8dbbd2a5c015286dd2430d71d5300 0.000014300 ? 16/2 13.9434
9c6b76f7112d0e80ccf7e04921a1b099da7fc752b97aafd629dd91d318e6c81b 0.000004350 ? 4/2 4.2607
1c88cdbb175276cc43ed6ba76589eae97d2a4d148c21bc18929cf5e4c7d3f0ad 0.000002690 ? 2/2 2.6445
1300000 02:186:08:55:43 0.0996 a7b7d796380fd4d6811d7bc4dd6a3c5ff07705480b51735352648bd6fdcf7902 N/A 12.375737886 0/1 0.0996
1299999 02:186:08:59:44 0.0996 e6c94852f3f851e6e3021be3df91af88cd5bc4b6898fc1a31e150ef4d06770e9 N/A 12.375743787 0/1 0.0996
1299998 02:186:09:00:54 0.0996 a4e0fa4e0b96ca979daf00c786ec6e4473cd83e346cbfc9c851ccc0ec5ddfa33 N/A 12.375749688 0/1 0.0996
1299997 02:186:09:01:10 11.6250 eb84425e55f4c9fbb6cc4ad11908b73f33c183c0ece9543c400192d948f45ecc N/A 12.375767399 0/1 0.0996
ecae2cfdc67ae8ece345d13ced6e03cebd5430b4912761da514a849f8400866c 0.000011810 ? 13/2 11.5254
1299996 02:186:09:04:06 0.0996 72621e18f68d4abfd9e0c89eae43917eaacdafa9e42918fc68e2bef3f69bdc17 N/A 12.375761490 0/1 0.0996
Prev
Current Page: 30841/95841
Next

Service Nodes

0 service nodes awaiting contributions, 0 decommissioned service nodes, and 44 active service nodes.

Service Nodes Awaiting Contributions (0)

Public Key Contributors Operator Fee (%) Contributed Open For Contribution Min. Contribution Expiry Date UTC (Estimated)

Inactive/Decommissioned Service Nodes (0)

(These service nodes are currently decommissioned for failing network obligations, are not earning rewards, and face deregistration soon)

Public Key Contributors Operator Fee (%) Decommission Height Last Uptime Proof Blocks until Dereg.

Active Service Nodes (44)

Public Key Contributors Operator Fee (%) Staking Requirement Last Reward Height Last Uptimr Proof Expiry Date UTC (Estimated)
f9e9aa7608c8c134ff9c14ef92488c122b947fd27d8cfe31d6745546c462665b 1/12 100000.000000000 1916792 00:33:23 Staking Infinitely
5da2fadfa1efc8e0982f30042c0853a60d3035e74f42f66d9433aa5975a297eb 1/12 100000.000000000 1916793 00:09:48 Staking Infinitely
b42fb5a319f9ef592ada30e483b64431d05386ba5692727d0e64a15802be3ef5 1/12 100000.000000000 1916794 00:20:55 Staking Infinitely
4a9a479460d135c51723254462919ff51e4b692f2bc4aedafb26316494f45a64 2/12 50 100000.000000000 1916795 00:03:35 Staking Infinitely
f63e2a3a60e5d07f8fe0a32943c3f362d3d441c0ba771a997e9c893f16e4dff2 2/12 50 100000.000000000 1916796 00:00:08 Staking Infinitely
e9ce4cbc023dd13600dd1b84e811838cccc09a169ab6cb51f537481242bddb1a 1/12 100000.000000000 1916797 00:41:03 Staking Infinitely
81ea05da87ecfe7d707a13ded483e5a0ee257c3ff802cd01742185bc87d803d9 1/12 100000.000000000 1916798 00:13:07 Staking Infinitely
c338966f59c208f065e570e4631dced159118467b174e2cadc0bd59ff4768987 3/12 50 100000.000000000 1916799 00:03:57 Staking Infinitely
050e45639e86a90ca465c5194642d9fee300ac170acdbb2c0144fc8ebaaf6b82 2/12 50 100000.000000000 1916800 00:39:42 Staking Infinitely
4332a2f6e1973fe1e60d297171d50c093028fd0021c44837448505d8c3b170d9 1/12 100000.000000000 1916801 00:38:36 Staking Infinitely
+ 34 more ↪

click here to see the full service node lists (at most only 10 of each list are shown here)

Uptime quorum for height 1916833)

Public Key Last Uptime Proof Expiry Date UTC (Estimated)
Validators 10:
0: 5a67c6e399571ec4665cc61cc19a5e84eeab60cf51c4f75fac5eea24a33d87e0 00:55:27 2026-04-07 21:25:03 (in 3.4 days)
1: d3e9da49cf45266c3a0270253b0e2921dcbf939cfa52e5de31130d9ef5fb921d 00:54:09 Staking Infinitely (N/A)
2: 0a23d89cbd41b85c5bffec0f53289536393e1a91a6537caf7b2064d97f92f7bb 00:27:03 Staking Infinitely (N/A)
3: 5da2fadfa1efc8e0982f30042c0853a60d3035e74f42f66d9433aa5975a297eb 00:09:48 Staking Infinitely (N/A)
4: aa78babccc4e6e29d3becac648489e6da5c375ae22566dd9cc65880210d81539 00:41:15 Staking Infinitely (N/A)
5: f9e9aa7608c8c134ff9c14ef92488c122b947fd27d8cfe31d6745546c462665b 00:33:23 Staking Infinitely (N/A)
6: 0731fb56884ea6dcbd89786ebab0fcdf80d68c41aeeaa759b291daf59320a9bc 25:08:22:57 Staking Infinitely (N/A)
7: 361f463346d3409705042d85617b51e1c61f8821cc3c21f16ce9034d5b761c1f 00:19:11 Staking Infinitely (N/A)
8: f63e2a3a60e5d07f8fe0a32943c3f362d3d441c0ba771a997e9c893f16e4dff2 00:00:08 Staking Infinitely (N/A)
9: 80a869c7963e4c92ccd1032749e29b33e7e943f4e70cbe8d9a3110115a0a53e3 00:44:43 Staking Infinitely (N/A)
Nodes to test (34):
0: 30f9c742e16707fb9b0c9c2078ed750595e297e4a0f75b972794766e25447cfc 00:08:02 Staking Infinitely (N/A)
1: 30f3281710c23bb2c9b11a8bc0a3f63876ad2d974a55f08db00dde2f1fce4f3e 00:13:11 Staking Infinitely (N/A)
2: c99d98eadc123984ca4f9042e6e2e3460e43467a7136f61f7f0960ef92fec01e 00:32:07 Staking Infinitely (N/A)
3: 4a9a479460d135c51723254462919ff51e4b692f2bc4aedafb26316494f45a64 00:03:35 Staking Infinitely (N/A)
4: f0e1913158cd650f98270490ded011fc138bb0a18bce9dcb796276b58f32340a 00:29:55 Staking Infinitely (N/A)
5: b98ee2847b18dc4e46be8e384d59157a67a5366ee8b03553c519b520e147ef65 00:44:17 Staking Infinitely (N/A)
6: 28f7c771d9cd63b4c3d5c8261c153f7e05f23f67a562dc5c39635445e1d1d268 00:38:38 Staking Infinitely (N/A)
7: b42fb5a319f9ef592ada30e483b64431d05386ba5692727d0e64a15802be3ef5 00:20:55 Staking Infinitely (N/A)
8: 781efae048bb90829a0c7ce9f4c9c34e572d236955e91f4b3c86a85effa632d5 00:01:45 Staking Infinitely (N/A)
9: 75ed97a747c6b790917a62befd733ec67df8a7b5a9861baa432521eaa788d2e2 00:17:43 Staking Infinitely (N/A)
+ 24 more ↪

Uptime quorum for height 1916832)

Public Key Last Uptime Proof Expiry Date UTC (Estimated)
Validators 10:
0: 80a869c7963e4c92ccd1032749e29b33e7e943f4e70cbe8d9a3110115a0a53e3 00:44:43 Staking Infinitely (N/A)
1: 0a23d89cbd41b85c5bffec0f53289536393e1a91a6537caf7b2064d97f92f7bb 00:27:03 Staking Infinitely (N/A)
2: d3e9da49cf45266c3a0270253b0e2921dcbf939cfa52e5de31130d9ef5fb921d 00:54:09 Staking Infinitely (N/A)
3: 53b13c3b12f633765fad6a3af5e9910067af666c8c35940a5d0190ef05e86016 00:34:50 Staking Infinitely (N/A)
4: c6c5fce08eef76dca701248665f0586f83da2243ba13781899abc525b3572063 01:02:37 Staking Infinitely (N/A)
5: b42fb5a319f9ef592ada30e483b64431d05386ba5692727d0e64a15802be3ef5 00:20:55 Staking Infinitely (N/A)
6: 3643a6e19bdae79cbabfb961391dd60cff5f219e30bbcbb559f0602325d7ab5d 00:29:01 Staking Infinitely (N/A)
7: f63e2a3a60e5d07f8fe0a32943c3f362d3d441c0ba771a997e9c893f16e4dff2 00:00:08 Staking Infinitely (N/A)
8: aa78babccc4e6e29d3becac648489e6da5c375ae22566dd9cc65880210d81539 00:41:15 Staking Infinitely (N/A)
9: 4a407bb5161d9ad488e4feb1ce4870d5076d223d24160476275f2e292c290d21 00:45:55 Staking Infinitely (N/A)
Nodes to test (34):
0: f0e1913158cd650f98270490ded011fc138bb0a18bce9dcb796276b58f32340a 00:29:55 Staking Infinitely (N/A)
1: c338966f59c208f065e570e4631dced159118467b174e2cadc0bd59ff4768987 00:03:57 Staking Infinitely (N/A)
2: 361f463346d3409705042d85617b51e1c61f8821cc3c21f16ce9034d5b761c1f 00:19:11 Staking Infinitely (N/A)
3: 4a9a479460d135c51723254462919ff51e4b692f2bc4aedafb26316494f45a64 00:03:35 Staking Infinitely (N/A)
4: ca0113d6999df9187b7959b602c7557cf9658a274fd89948c5aead79eb95a510 00:08:21 Staking Infinitely (N/A)
5: 28f7c771d9cd63b4c3d5c8261c153f7e05f23f67a562dc5c39635445e1d1d268 00:38:38 Staking Infinitely (N/A)
6: 5a67c6e399571ec4665cc61cc19a5e84eeab60cf51c4f75fac5eea24a33d87e0 00:55:27 2026-04-07 21:25:03 (in 3.4 days)
7: c442b8c2be6b9175211390d4dbf3d3c6b9c8132517335eabbffce8b68da71b36 00:23:44 Staking Infinitely (N/A)
8: 76e3e01fe63166ca4e448a2d9353486dbf966804c0eb51437d135fdd93e3eb3f 00:18:26 Staking Infinitely (N/A)
9: 0731fb56884ea6dcbd89786ebab0fcdf80d68c41aeeaa759b291daf59320a9bc 25:08:22:57 Staking Infinitely (N/A)
+ 24 more ↪

Uptime quorum for height 1916831)

Public Key Last Uptime Proof Expiry Date UTC (Estimated)
Validators 10:
0: c99d98eadc123984ca4f9042e6e2e3460e43467a7136f61f7f0960ef92fec01e 00:32:07 Staking Infinitely (N/A)
1: 3a695a55e9442573865950ec85b393e7ade3a76690b62d0e992f32f246943bd1 00:04:51 Staking Infinitely (N/A)
2: 30f9c742e16707fb9b0c9c2078ed750595e297e4a0f75b972794766e25447cfc 00:08:02 Staking Infinitely (N/A)
3: 83b11eca71c4a2d77d256304fd422493ed4d290e3cb084bf76758d239fe9a0b4 00:45:44 Staking Infinitely (N/A)
4: aa78babccc4e6e29d3becac648489e6da5c375ae22566dd9cc65880210d81539 00:41:15 Staking Infinitely (N/A)
5: 53b13c3b12f633765fad6a3af5e9910067af666c8c35940a5d0190ef05e86016 00:34:50 Staking Infinitely (N/A)
6: b42fb5a319f9ef592ada30e483b64431d05386ba5692727d0e64a15802be3ef5 00:20:55 Staking Infinitely (N/A)
7: 0a23d89cbd41b85c5bffec0f53289536393e1a91a6537caf7b2064d97f92f7bb 00:27:03 Staking Infinitely (N/A)
8: 33ef2ff577821dfc3e8ba0b6a7b62759f092c53d798cc1a9c5ba85f59f549efc 00:58:18 Staking Infinitely (N/A)
9: e9ce4cbc023dd13600dd1b84e811838cccc09a169ab6cb51f537481242bddb1a 00:41:03 Staking Infinitely (N/A)
Nodes to test (34):
0: 781efae048bb90829a0c7ce9f4c9c34e572d236955e91f4b3c86a85effa632d5 00:01:45 Staking Infinitely (N/A)
1: 30f3281710c23bb2c9b11a8bc0a3f63876ad2d974a55f08db00dde2f1fce4f3e 00:13:11 Staking Infinitely (N/A)
2: c442b8c2be6b9175211390d4dbf3d3c6b9c8132517335eabbffce8b68da71b36 00:23:44 Staking Infinitely (N/A)
3: 16927f2acef9455c357990988e651406fb3f5e6dcad09d28957d906b25ba9acc 00:47:55 Staking Infinitely (N/A)
4: f0e1913158cd650f98270490ded011fc138bb0a18bce9dcb796276b58f32340a 00:29:55 Staking Infinitely (N/A)
5: 5a67c6e399571ec4665cc61cc19a5e84eeab60cf51c4f75fac5eea24a33d87e0 00:55:27 2026-04-07 21:25:03 (in 3.4 days)
6: bf84fec11377bd3f6a46c27484a8f46050274067047fefe4b15cfd566d68a671 00:37:06 Staking Infinitely (N/A)
7: 0731fb56884ea6dcbd89786ebab0fcdf80d68c41aeeaa759b291daf59320a9bc 25:08:22:57 Staking Infinitely (N/A)
8: ca0113d6999df9187b7959b602c7557cf9658a274fd89948c5aead79eb95a510 00:08:21 Staking Infinitely (N/A)
9: c338966f59c208f065e570e4631dced159118467b174e2cadc0bd59ff4768987 00:03:57 Staking Infinitely (N/A)
+ 24 more ↪

Checkpoint quorum for height 1916832 (determined by block 1916821)

Public Key Last Uptime Proof Expiry Date UTC (Estimated)
0: b98ee2847b18dc4e46be8e384d59157a67a5366ee8b03553c519b520e147ef65 00:44:17 Staking Infinitely (N/A)
1: f0e1913158cd650f98270490ded011fc138bb0a18bce9dcb796276b58f32340a 00:29:55 Staking Infinitely (N/A)
2: 33ef2ff577821dfc3e8ba0b6a7b62759f092c53d798cc1a9c5ba85f59f549efc 00:58:18 Staking Infinitely (N/A)
3: 28f7c771d9cd63b4c3d5c8261c153f7e05f23f67a562dc5c39635445e1d1d268 00:38:38 Staking Infinitely (N/A)
4: 5da2fadfa1efc8e0982f30042c0853a60d3035e74f42f66d9433aa5975a297eb 00:09:48 Staking Infinitely (N/A)
5: c6c5fce08eef76dca701248665f0586f83da2243ba13781899abc525b3572063 01:02:37 Staking Infinitely (N/A)
6: c338966f59c208f065e570e4631dced159118467b174e2cadc0bd59ff4768987 00:03:57 Staking Infinitely (N/A)
7: 2f235e88eada0dcabd49b9f2ee0fcd1002dbfabfe7dc273dc445e1e8abc220c0 00:48:02 Staking Infinitely (N/A)
8: 81ea05da87ecfe7d707a13ded483e5a0ee257c3ff802cd01742185bc87d803d9 00:13:07 Staking Infinitely (N/A)
9: c442b8c2be6b9175211390d4dbf3d3c6b9c8132517335eabbffce8b68da71b36 00:23:44 Staking Infinitely (N/A)
10: 4332a2f6e1973fe1e60d297171d50c093028fd0021c44837448505d8c3b170d9 00:38:36 Staking Infinitely (N/A)
11: 30f3281710c23bb2c9b11a8bc0a3f63876ad2d974a55f08db00dde2f1fce4f3e 00:13:11 Staking Infinitely (N/A)
12: e9ce4cbc023dd13600dd1b84e811838cccc09a169ab6cb51f537481242bddb1a 00:41:03 Staking Infinitely (N/A)
13: ca0113d6999df9187b7959b602c7557cf9658a274fd89948c5aead79eb95a510 00:08:21 Staking Infinitely (N/A)
14: 139595b1c4670eb35a9cc6d32b6c351c53422d6ebf9405d0e2de6edb09afa5f2 00:55:27 Staking Infinitely (N/A)
15: f9e9aa7608c8c134ff9c14ef92488c122b947fd27d8cfe31d6745546c462665b 00:33:23 Staking Infinitely (N/A)
16: 0731fb56884ea6dcbd89786ebab0fcdf80d68c41aeeaa759b291daf59320a9bc 25:08:22:57 Staking Infinitely (N/A)
17: 4a407bb5161d9ad488e4feb1ce4870d5076d223d24160476275f2e292c290d21 00:45:55 Staking Infinitely (N/A)
18: 45f9349a3ceee3a75d6142204286d37dacf81c1f9ec01a65e7b716269726635d 09:00:59:27 Staking Infinitely (N/A)
19: 0a23d89cbd41b85c5bffec0f53289536393e1a91a6537caf7b2064d97f92f7bb 00:27:03 Staking Infinitely (N/A)

Note: The quorum shown here is the currently active voting height which is not necessarily the latest quorum. Quorums can only be voted on after a number of blocks have transpired.

Click here to see the last 1hrs worth of the stored quorum states

Last 5 checkpoints

Height Block hash Checkpoint Quorum
1916832 1b5e4250e97318e7b328bf22ec85f987d006f3f7d6fdcd6c45ac8f205a1e7d97 1916832; 18/20 signatures: ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ x ✓ x ✓
1916828 300673b615294cb25667b68b4e3b9dd939c4e338bad472c028e8b4c918dc4169 1916828; 20/20 signatures: ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓
1916820 c4f817329b4163467abbcbba39a1ae8b20d93d56825fc549a3e8b70c6072dc56 1916820; 19/20 signatures: ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ x ✓ ✓ ✓ ✓
1916760 bb1e6008286a9a812f2b3d1f49e40962f89081ca5826572e532af0be5eafc90a 1916760; 18/20 signatures: ✓ ✓ x ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ x
1916700 6f19afbe68ed3d390472cb59066f3538342e0bc8d20b261332e76e1cf31383e5 1916700; 20/20 signatures: ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓

Check here to see the last 50 checkpoints

No javascript / No web analytics trackers / No cookies / No external resources / Open Sourced
Explorer Version (api): patches-2025-08-25-05fdb31 (8.0) Arqma Version: 10.0.0-4b067e8c_Release
Latest source code
Forked from: onion-monero-blockchain-explorer
Copyright (C), 2019-2025 arqma.com