1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42385aa3aea84cc51acc5e1ae5c5ded73372901554a34b9b944ec7844a7dc46c. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2bf7fea5-055c-4a05-b6d0-74883ebabffa.json and https://artists.proofprofile.net/proofs/artist/2bf7fea5-055c-4a05-b6d0-74883ebabffa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c78d749bd70df7460bf1d0c96785a099d64cc4ec4cc5fdf77a45e917952de1. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6L2277113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x528d323cbfbb7512582e322a37bb1078b4abf75edd15fd374e54887b6646e45c. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6J2289659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b5d0d5a293c7d176d8db3aece426a0edce0d7367a2268a32013a378ca2964d. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWR2226036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf940cca6f17987f4bbc4dc86ad22aa3d148d5a9c5f25880b5b553d0981d46af. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPLS2235663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2cd10bd4e723342743fc86e2601af789e7260504abb1cc7084d80e836c474cc. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAU2252726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8915f434bdd148482b334a236f711d41912c0bc3f0490a2d8d8ddd3400930af2. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAY2240118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x423bdda1927f5f3474921ba66de29bd72b9bc76b4020a0af3703fa8b791df5aa. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAY2256376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc85d21785d35fb84156bf972e3bb42d16a4d39c4f9c6b68019714f713c2177. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ72320035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb68ce6ed3013e265a29dc171d29333a471968a7085cedfa106e31796f5e79e7c. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ72332049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c20c65466c3dfcb072e7256d72defd7d362f9bd7aef30fd1d84dfddfb52217. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN62384944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa026486dc3418344aecaaabbca5a4b7e1dca42615ede494931b541cbe49b8809. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6H2387329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3877c2250c56d33d494ffe08709a995db98533e2b79c435f8f91c2c4e8dc6e87. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAW2397294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b94ae2285024506b4586962e11bdf98aad9b1f00e9d675ca07c43b8dbf8dcd. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB62344982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a75b9c614fc662d39746af4063a33e4d89c1cff9634d2d098e1b2f00436355d. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFF2301111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f7dc60b5e70335a47583ed674058250a0370cfce03ce0da364f2b26c79b126. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFN2327443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4615c076affc9c0d3d5bcaa3576f491ed4050a2976969dea2d205c59a3f6111a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB82317791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3b1346f2b2bd44cf4a49e444432e68e441aa2eddc313e71a69efa60eacb6360. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN62384129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x981d77119418eec7354e9205437a5166926765d3216ac873cfbccfd984874673. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA82404622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd52d4dfb7ac51377e20082e9f9afa783c6e08520f5efb096194052bc19c446. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN52457806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1eb94ec06de1eee4682014d4bcdba1741f3c6d824e1cf7626fd85fc91671aa4. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHNA2466246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc65786a410321dec6e76d04addc2750fe797944be6d971034373669f26f0722b. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6P2414510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2102404dd2baeecd811b59937fb4ce0ab15eb51050730b63d0470b7c26b05d16. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6N2448458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc6c726e86dde9297b37e03f389f76c860c9e08c360647e7eeecbe4fc4c290a4. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6M2440450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d29a36aaee62b509a2f465e8ddc425cccecd1e940deeca57d7845cccd9b878c. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6L2403005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eaccdc8ed19770a4c4d7452c102ab01091d757926b99e2db7368b6b05f56612. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEP2476936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e602fa018512c13132d5381e2754d7ae6d73f05fad762d76fbddc53c099e902. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEP2476937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x810e6c35e764660669803487f7f35ef20e443b8fd5c374ec2dde1aa5fe89c0ab. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEP2476938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eba1d7429eef27bbe117f9fa2ac87971e6c1c667d27fb0b289c7a327f745479. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFT2420396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac8b4054c97b2cd7679ea8528eb05058f2d1d893bceb8c181f72596651a04067. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFT2472569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b7ff307aa1c312c413938d68e946c67ba6670cf4154274af3150ceb6dc9fda. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ762457877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac03d95d9dbc7f18b18280edc6ecad3719f17482c12c8f6850cda90509fc570. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ7L2489282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd247670529b7c21feed496482cbc04de8cb0d36f83ce3f6be158251e81188984. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ7M2463007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4143b6d0663d1f504977d71c3cd463a94d6c0cbed2c45a29e56930c04473bb60. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ7S2432935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04bafdfe318019ae6b840f5a2bab375ef78a3f5af0a6a625e2746e7ebc98ae03. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ7S2432937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa99918540adfb71423fab6165d94115a222322e7d953e49c174f966d8922c5e5. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ7T2447526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x084de4a1c2c9f2827ea3d281dc9e53c1e99e7e06071ba8a9bbc11ed5e939dbe4. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ7V2460524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2520f4736067cc713c4af06479282ff5ac8dc7255a3c22e506e62c4bf1a5861a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES92536313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9300aaeab532f459d68ce6eebc0e35bbb5222a178301b65c7a74064390a581ef. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES82546316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86bc7ab77bc0a51367dcb94282f63623f7ed25e97048a57e2a38e97d36b31e9c. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN52549990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7e4654ea5122e624332e85a6f467e26592eaf3d6ca72f3592127d0635745c8. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEM2524050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26070f29ae3a89e6dc09a068b3da19981cb4ab276dd7a0922e39c30afbf16a3a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAX2593993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d551a60fe708a6ac5da12e187bd356110b38e0bedaa4743eb5e6ab58592c570. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFJ2592444.