Block Summary

Block Height
179982
Block Hash
8953b8123e802b32d10d7d3e6655258ed763d8a217be098ff052c2b0a67500e3
Block Size
19,771 bytes
Block Weight
78,976 bytes
Timestamp
6 years ago (2018-06-27 10:10:40)
Block Reward
4.94472123 QTUM
Difficulty
2434783.914539681
Merkle Root
07a7ff561cf898d2f1c856db1b17089897d67190c75bc5e50c89ab032c028fdc
Mined By
QWLdqoxNqBU3UEKzorPjtHyycnsfzWfwZV
Transactions
26
Previous Block
7f01e64fd0db5ea19e4a140548e1378bbe13e9d24fec71d059b0b36a9fcb4fe0
Next Block
e430620ce59975b8f03aebbead4c46a03dc8b59db874d18fb55379c994ad9f23
Transactions
cd2fd1aaf95943285ca2e26f06e2534a51247c7b82de3d11593e698366828962
4134536 confirmations 2018-06-27 10:10:40
Coinbase Input
Empty Output
OP_RETURN Output
ff360e92dd54850e6407ec1bd946a26832f3e80f20ff7ea7a62ceb62618d4a2e
4134536 confirmations 2018-06-27 10:10:40
QWLdqoxNqBU3UEKzorPjtHyycnsfzWfwZV 2,511.21000000 QTUM
Empty Output
QWLdqoxNqBU3UEKzorPjtHyycnsfzWfwZV 1,255.85000000 QTUM
QWLdqoxNqBU3UEKzorPjtHyycnsfzWfwZV 1,255.85447215 QTUM
QWzY5y6tMu3RYMXPH9oAur4vgezE4nYMzh 0.49447212 QTUM
QfFE2wjWdqPDX4TQESSdEyb5y9DqL5wYHA 0.49447212 QTUM
Qgdj4FrXXxLVkxPDYtFNNGZNd9TJrNjtpM 0.49447212 QTUM
QZ4eZQvN96Hq2SmS6MXYXVG975YUruTBiX 0.49447212 QTUM
QbkwZqLcS3H1pW9Feb1DWRr9NR2eTYDyGd 0.49447212 QTUM
QNtkxsH3rZzjHfHkXyHiL2qVxx5pS2XP4p 0.49447212 QTUM
QNqKeSsHjZfbVxB2jkpDUgGcZvSheWKhCw 0.49447212 QTUM
QNqKeSsHjZfbVxB2jkpDUgGcZvSheWKhCw 0.49447212 QTUM
QPGUb2A4eTfDsm2F23Yv1x2z2qD9soqQv5 0.49447212 QTUM
QcsyfHCUSkuJtwENDQTGg8d2EKfH5QrLfX 0.02541680 QTUM
Qbf6sk8kydFLnikXGkSxKLcczNBwVgWwrR 0.07341680 QTUM
QX5bncakBr8dAxDKs8u1aRpG6J64g5dwDs 0.09133040 QTUM
QcsyfHCUSkuJtwENDQTGg8d2EKfH5QrLfX 0.02522120 QTUM
QcsyfHCUSkuJtwENDQTGg8d2EKfH5QrLfX 0.03041440 QTUM
QPXAv49r57h9qcnqKHc6bFX5h6mrB75oZL 0.02541680 QTUM
QdyajfnrgU9ZT4JsVa931SGSaHshBBrqh1 0.03144240 QTUM
QduWqYYmob8LZCzZizzx2hauPoGLmMTGyn 0.02544240 QTUM
QUm7BNjtNKsjJoDgSMQCwt2Vhffu7X5TQq 0.02544240 QTUM
QWSTGRwdScLfdr6agUqR4G7ow4Mjc4e5re 0.08543080 QTUM
Reward 4.94472123 QTUM
6eaa72ee124cf922db1ddac975d0c0bf888e610ed8018c943b686efaeb4d088b
4134536 confirmations 2018-06-27 10:10:40
QcsyfHCUSkuJtwENDQTGg8d2EKfH5QrLfX 536.01000000 QTUM
QcsyfHCUSkuJtwENDQTGg8d2EKfH5QrLfX 100.00000000 QTUM
09800417b097c61b9fd26b3ddde4238304a110d5 Contract Call
QcsyfHCUSkuJtwENDQTGg8d2EKfH5QrLfX 635.81000000 QTUM
Gas 退款
QcsyfHCUSkuJtwENDQTGg8d2EKfH5QrLfX 0.02541680 QTUM
QcsyfHCUSkuJtwENDQTGg8d2EKfH5QrLfX
QWG3W834BERVfwWFK7guTtHuboaSVPxpvw 16,458 QBT
Fee 0.1745832 QTUM
994cffc1ac2bba316e4f414b48ea14d738abf0f0d99f6bfc77b4308590d84776
4134536 confirmations 2018-06-27 10:10:40
QcsyfHCUSkuJtwENDQTGg8d2EKfH5QrLfX 635.81000000 QTUM
QWG3W834BERVfwWFK7guTtHuboaSVPxpvw 633.00000000 QTUM
QcsyfHCUSkuJtwENDQTGg8d2EKfH5QrLfX 2.61000000 QTUM
Fee 0.2 QTUM
b24644b322ecbfbf059729353507d014566d36d440959a04445368ab825c7638
4134536 confirmations 2018-06-27 10:10:40
QTYq1JArUME9Xhqu6revthdGvBEF6Gt7dm 600.00000000 QTUM
QT5UZgzKAH3pch9y7a9z9noSn4ziW9fEZf 599.99000000 QTUM
Fee 0.01 QTUM
7e19dc405b047b75bcffb22c7fca866adf1f42c9f15dfe4526f8e814d0d08a77
4134536 confirmations 2018-06-27 10:10:40
QgvHYGpZ8NPUvb1Au3sPLYiqvEpUd2yShk 36.31043320 QTUM
Qeu3BBq9mSNdMUSRAm4RnSMLUtuHqxKS1n 2.00000000 QTUM
QgvHYGpZ8NPUvb1Au3sPLYiqvEpUd2yShk 34.30043320 QTUM
Fee 0.01 QTUM
bb2f2dd358db07c817d430cd55a74f7d7583e64897b29548ea3389f9ec06aed3
4134536 confirmations 2018-06-27 10:10:40
QQWXZsVscB39dzfZgjtozWk7VtQpZt3CBU 37,332.84842000 QTUM
Qidvmw3ZHK1TSsy8TxYan87MC5zCRuywMV 10.77380000 QTUM
QQ2DGw1rPFw7pdH4mZsbxCeuX4C7Uza8x6 37,322.06462000 QTUM
Fee 0.01 QTUM
9ff812cf564840425535741e99f6e10010adfea18ade0d6eb4e166a84452da09
4134536 confirmations 2018-06-27 10:10:40
QM2pxFuNER2wpQMoVpSQCJRVtNbGJSX2qT 2,515.00000000 QTUM
QP3czKi4Zous65jwiZDcRXyHbDabRq8Z3Z 2,500.00000000 QTUM
QeiRrUhtVJvgptXQ8SDdRz9fawzngjkzs4 10.00000000 QTUM
QeiRrUhtVJvgptXQ8SDdRz9fawzngjkzs4 4.99000000 QTUM
Fee 0.01 QTUM
f760a6c2f64f4617d907a187210433bdc90ba5881c05a12583df0ad9ee587898
4134536 confirmations 2018-06-27 10:10:40
QXKqLM6Kv9b5WTjoPBAPrKbLjRCaCuPd6q 0.88885995 QTUM
QXKqLM6Kv9b5WTjoPBAPrKbLjRCaCuPd6q 0.03070920 QTUM
QMYxJAPwEppSTcRNtRLGhfu1X3tXo944yg 0.05000000 QTUM
QXKqLM6Kv9b5WTjoPBAPrKbLjRCaCuPd6q 0.86296915 QTUM
Fee 0.0066 QTUM
4a65ab3139ab4b67ff630dc21abdae9dbe23cf5508cd4cdfc327b3c15433cbf6
4134536 confirmations 2018-06-27 10:10:40
Qi4NneEegv3ZU3JkT6ytpQePpctUaXVU52 6.17332787 QTUM
Qdw7BtBdkFk1emeuRRXaE9mvGkQLPKnx8x 5.17218615 QTUM
QduWqYYmob8LZCzZizzx2hauPoGLmMTGyn 1.00000000 QTUM
Fee 0.00114172 QTUM
cd976078195f87a82df592c7e5c1c6ed9ee7dd982dd4b2f19d1648509f84a6f5
4134536 confirmations 2018-06-27 10:10:40
QUFwvRXTnjnWmGVYxaXZoEAmMkKtkth8ND 6.00000000 QTUM
QUFwvRXTnjnWmGVYxaXZoEAmMkKtkth8ND 1,135.00000000 QTUM
QW3N8pocb7NRVjHqbg6DWayoceV3TYh8bf 0.03732633 QTUM
QUFwvRXTnjnWmGVYxaXZoEAmMkKtkth8ND 1.00000000 QTUM
QM7oeeHkD3SPcQzUjsdZAWwY1obyxACHeM 0.02417281 QTUM
QgejdDhKRzUD1KBHivviykEVbfxgrqBLyd 9.95524839 QTUM
QT192W9xKG953bVRD6JvyixkzcfZBCuY6H 0.01186740 QTUM
QM2pxFuNER2wpQMoVpSQCJRVtNbGJSX2qT 1,152.00000000 QTUM
Fee 0.00488013 QTUM
cb0f4bc06a2c9a39c0c9b7fa97e46c46139a89830b9a68868c3a7049c782d440
4134536 confirmations 2018-06-27 10:10:40
QX7rMBCYRFbuCMhcEJgijBq48uK7Fsf8nF 99.99000000 QTUM
QjAKjnsvsQ5vqmwgkhrYGgb7YG5k7V69TY 0.17885666 QTUM
QNmtT2FnhQgUDaCS1GETWZ4U4ewShUCGwZ 10.96284000 QTUM
QP8fBX3V57mve4sxrFciqDGwcJjJee7xgC 111.00000000 QTUM
QeWuypsc7vUr1ZoUMqKgEaiBpSWffkbULa 0.12906074 QTUM
Fee 0.00263592 QTUM
ccdbfeff6ddd3843016bf58b61ae24291a46260ec143d71c685910f1ab60af9f
4134536 confirmations 2018-06-27 10:10:40
Qdw7BtBdkFk1emeuRRXaE9mvGkQLPKnx8x 5.17218615 QTUM
Qi4NneEegv3ZU3JkT6ytpQePpctUaXVU52 5.17121619 QTUM
Fee 0.00096996 QTUM
6f451139e9cdbdcecc4c88374db50644ce7aff3ef46def6a7dd923e6d3616adb
4134536 confirmations 2018-06-27 10:10:40
QML2n8oWgErR3wqd1msWViSmicXKnrCg5R 14.83069942 QTUM
QaFusqXdWT7CZwdXavZL4N8Li7eawSykzu 10.00000000 QTUM
QZ6nnw32HzvzHt4cZBys6rZu4yNqV4KAuz 4.82955820 QTUM
Fee 0.00114122 QTUM
873f22dfddecce43a14758154b4fd395b990237b2fa0ee3265c6dc93e343601d
4134536 confirmations 2018-06-27 10:10:40
QTTrho7EwowEybqVCBJExL5LdbBboF8nWv 151.67700000 QTUM
QNqKeSsHjZfbVxB2jkpDUgGcZvSheWKhCw 100.00000000 QTUM
QUG65GDt8pnDPyfz4Q9czMtbDjupCfQiVR 51.67587000 QTUM
Fee 0.00113 QTUM
4efb6656eab0d4b1a2f934945796a2ffb0b1fbbd434b5715dd29c04e83896b70
4134536 confirmations 2018-06-27 10:10:40
QQXxcD7nXou2fG9Qa9xKcgW1s6V8Lbe8Vb 44.99435000 QTUM
QNqKeSsHjZfbVxB2jkpDUgGcZvSheWKhCw 26.00000000 QTUM
QVqe3cAENjJ7ezADHyBX1r2ZzQy1R1H7hm 18.99322000 QTUM
Fee 0.00113 QTUM
2d1c95c25025a445bccf228886cc32055332a37f5553732f6d72bd539a8249a9
4134536 confirmations 2018-06-27 10:10:40
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 313.14607475 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 314.19000000 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 314.20782250 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 314.18000000 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 314.19348648 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 626.09000000 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 313.13149401 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 313.17330864 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 313.05846980 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 2,500.17025772 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 313.13022600 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 314.19000000 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 312.94931832 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 312.90243278 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 393.86394664 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 313.26000000 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 313.27008010 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 313.14300919 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 625.38144050 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 626.53935985 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 313.25158325 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 313.42997355 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 313.00000000 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 313.01011395 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 625.86000000 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 625.87211514 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 625.62000000 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 313.15364709 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 313.49000000 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 314.19118700 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 646.44459995 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 313.13000000 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 313.41000000 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 313.14860373 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 313.47585358 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 626.42000000 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 313.01000000 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 625.86000000 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 314.19000000 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 206.56077076 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 625.37000000 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 313.00221496 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 413.15000000 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 314.20285781 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 313.41295812 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 313.43000000 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 313.26000000 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 313.12000000 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 323.42009487 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 313.01075106 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 784.57866865 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 646.25000000 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 646.25764248 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 313.13000000 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 313.14631613 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 403.00000000 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 313.12000000 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 625.50000000 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 313.13000000 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 312.89000000 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 625.38063500 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 399.63367652 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 1,251.55800000 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 312.89000000 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 312.89000000 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 312.89359031 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 312.93503766 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 313.14271407 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 313.01518856 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 413.89000000 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 312.88000000 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 313.01342460 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 313.47028174 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 399.02000000 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 313.46000000 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 1,250.28000000 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 1,250.29000000 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 313.01342805 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 313.41000000 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 313.46000000 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 313.47448354 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 313.14517666 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 313.12000000 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 312.89243368 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 257.22000000 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 257.22684910 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 625.38000000 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 313.04000000 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 313.04761757 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 625.37000000 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 625.38924456 QTUM
Qd5SAjYqcHHpta9WXr2tUtyzdx5SmidV9u 313.15078666 QTUM
QUKrKHPVkBVezUMsQTSSgXYtbkNmc2KwgZ 40,000.00000000 QTUM
QMbzHtvVp5YMUGDFqdf2npSV7X1Hv9jQGM 0.02071164 QTUM
Fee 0.042536 QTUM
d2f910975284f68606d6a8f35dde2e46ec2c38b81a85d3640f5d1b82bf2b531c
4134536 confirmations 2018-06-27 10:10:40
Qbf6sk8kydFLnikXGkSxKLcczNBwVgWwrR 1.38861262 QTUM
09800417b097c61b9fd26b3ddde4238304a110d5 Contract Call
Qbf6sk8kydFLnikXGkSxKLcczNBwVgWwrR 1.29943962 QTUM
Gas 退款
Qbf6sk8kydFLnikXGkSxKLcczNBwVgWwrR 0.07341680 QTUM
Qbf6sk8kydFLnikXGkSxKLcczNBwVgWwrR
QSFwfDxLykzZ6117JDUQStyKzjB7BMYBpz 3,609.3074 QBT
Fee 0.0157562 QTUM
95feabbb2e523b0e0a77841b5e2355a82213906fd291b6a59246723199caf4ce
4134536 confirmations 2018-06-27 10:10:40
QX5bncakBr8dAxDKs8u1aRpG6J64g5dwDs 0.88880000 QTUM
QX5bncakBr8dAxDKs8u1aRpG6J64g5dwDs 0.78760000 QTUM
9d3d4cc1986d81f9109f2b091b7732e7d9bcf63b Contract Call
Gas 退款
QX5bncakBr8dAxDKs8u1aRpG6J64g5dwDs 0.09133040 QTUM
QX5bncakBr8dAxDKs8u1aRpG6J64g5dwDs
QTwpQMZQKoXSMwWDoje72NTdx9WPsjVwxM 59,650 Vevue
Fee 0.0098696 QTUM
49fa46e3b625f3024ed591e3acab3427107fb71256243cb2f0b3305b8cbfa51d
4134536 confirmations 2018-06-27 10:10:40
QcsyfHCUSkuJtwENDQTGg8d2EKfH5QrLfX 2.61000000 QTUM
fe59cbc1704e89a698571413a81f0de9d8f00c69 Contract Call
QcsyfHCUSkuJtwENDQTGg8d2EKfH5QrLfX 2.41000000 QTUM
Gas 退款
QcsyfHCUSkuJtwENDQTGg8d2EKfH5QrLfX 0.02522120 QTUM
QcsyfHCUSkuJtwENDQTGg8d2EKfH5QrLfX
QWG3W834BERVfwWFK7guTtHuboaSVPxpvw 15,109 INK
Fee 0.1747788 QTUM