Gunz may refer to: Games GunZ: The Duel, a 2005 South Korean online third-person shooting game GunZ 2, a 2011 South Korean fighting video game, sequel to GunZ: The Duel Places Günz, a river
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 0x94ab0231dab3cc779fd73cbd1e8d714a1d681f666506a0ac914794306675ee0c. 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/57dbf85f-5c34-4a84-8eec-d8a8c0c011eb.json and https://artists.proofprofile.net/proofs/artist/57dbf85f-5c34-4a84-8eec-d8a8c0c011eb.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 0x56db8e7c2f9c43c592788c1ba7130b18bac063542800f601cb2d4665cac5e68b. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T05:21:06Z), 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/QZFZ42155225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc356aac7bff4af8ec5b8c8c1aad5995a0c49fc8ef42be43e687c44f999b76654. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZFZ42153510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b88b1df708dc9be6dc98625b17156a3df88b14346a2a6fc38272a9bda7a02f4. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T13:27:11Z), 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/QZFZ52046943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc023e97bed9513bb8fffc91c70676e84cdbdc38334cad781df102827dfd4f744. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/QZNWV2015072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x904f89844f250b730c9c0440a74c84b8b74f740daae83618231725dfa4b4b1c7. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZNWV2015078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c5e8d446dc519426f9e7f5f9f3b1619a63903191e60128b3afc7df15869ba8. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZNWV2015081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d7f936b1db3b810836e46b7df8ea58804bb0930fa237d3f39d7e8471499ba54. 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/QZNWV2015082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b81204b8200246a00c29974908087b628f53b8f15d410690c2495a01b057eca. 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/QZK6K2114142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x511012865495b0de143473f54b240f23e1939196a02c3df3854b1f6c55d3e511. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTAS2181063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf58d09eb517f5731bd011dbff8d73c7198afb80af1bbfdc9aa5a97c9dd3b4f3c. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZRP42227708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0152890bdfd0249cd91778ce8a207ffe3c11411aacfc8b9c9006cd0ae199cb. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QZRP42227711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a23469e65245f655fbde5ea8404e1f5aef2ce215415e7b042b9f21c2838e1da. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T13:04:09Z), 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/QZHN42309300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x393a5760c44db83f3f46f184101986918d36118dc881b63e3fb4e1ed04643dd9. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T08:37:45Z), 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/QZK6M2308197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f90f48e894d58f1626759a494880c0cadf2614725d86ced4bd8ad66d8f5becd. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZNWY2484099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc70e44a78cdc13dba591e5f8bdbc1ce55df9e4375f15d71743ea484a36b6b2e6. 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/QZTBF2448509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5202382dbeaa3ee8dd8ec9f07a3e43c8a7d5b1f43a0317e5c1dffca67db0190c. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZHN72513533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12408640c1e42a681e2bd1a5658208181ed86273d6b55444818403bd7d01ef51. 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/QZK6L2572483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f9f9c72cd783a58491a136e31be0640629d9f89c188f9ae25d249e6d79c9b2. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZZ7X2570342.