Z² (short for Ziltoid 2; pronounced "zed squared" or alternatively "zee two") is a double album by Canadian musician Devin Townsend and his musical project Devin Townsend Project, released on October
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b9b10b8bb453be1599ab752712a55471e636ff697e3f630e89e9fb49a1a44a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a170b388-a90c-4f5c-974a-e8fc022a47e8.json and https://artists.proofprofile.net/proofs/artist/a170b388-a90c-4f5c-974a-e8fc022a47e8.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa722b18c21bca1f548d63222df1de6309d852678c57a0b30c2dc95c9ea1e6b. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:39:13Z), 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/TCJPX2360741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb4aaa2107169eae5c0d0182a5a4a39d397a2f5223ac2afe56d5e51135ee4fc. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:21:30Z), 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/TCJPZ2444692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1502ade451f6a8a5b0aa200ff412d300dcf8b1cfc151e3baa490b15b4265f78. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCJPZ2495547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5944902c9881eadf7e4befe4ce2a9dff0d2bc43755518c02aaa98b0e80d642d7. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCJPA2479408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e0bfadb37eeb331cf2f88c39fb06c79029a3f150e5b9bee10021ae8784909ed. 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/TCJPA2479401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e04957503e4f8327899f885ba1e9888c80cc2992fafaa9b8f9dcf818c4e43b. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:43:38Z), 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/TCJPA2479402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef8c19ac842e34112a7308dac0926d9c92fa51e124551af2def32fd1c2596158. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T16:00:39Z), 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/TCJPA2479403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d16b7c1dafb8ec1692901f9f41a21b472c461927c6e5b42167b800ef1a4b531. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:26:13Z), 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/TCJPA2479405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a71a18057446da99ce9aff075340b2582d5923e6a55eec4a8402a276103f617. 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/TCJPA2479406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5944902c9881eadf7e4befe4ce2a9dff0d2bc43755518c02aaa98b0e80d642d7. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCJPA2479408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fecb6f2bb8088179e6553797ba04d5666ece5de5f0b058793ee7cb19dfca6eb. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:40:51Z), 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/TCJPA2479410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f4b4f6fbc93bee8745ae455bdab05527c84ec782c30632e7abe00a79a9610fb. 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/TCJPC2418380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x761b4246982695fe4f2b3e90fb5465bcf29c7fe3105d828c92fab53d2353e02c. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/TCJPD2431889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0dfd1e6235748a62bdba74cf085000c5917aa2007f995d6900f945a4e205703. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:01:35Z), 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/TCJPE2511832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5862c751652368de14eabab58459ab7e05c66d61c3f414571b1705b3ec11176. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/TCJPG2523577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c071bc68a0e70be1e20732c3865ee1411559d3a6443d9cd467a1bc3d0b82702. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCJPH2589178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5172067c40dd1b9e69000d826eb67adcac5d0b9182269a276ca5fcd3bcae7d71. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:57:48Z), 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/TCJPJ2569290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a1f772ca4cc6261cb301368374152738018ec0cc64254bf9aed2988fd5121d6. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QT66J2593939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f3812279ef4f4e8820272713174142c7c645a29a9396a1c1ecd17bb8a086eb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCJPB2484809.