The Zenith Passage is an American technical death metal band from Los Angeles, California founded in 2012. They are currently signed to Metal Blade Records. To date they have released one EP, Cosmic
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 0xb15cd921f21c38c41bb6e2cb0bf027eb9903d474e18c9ae5cdce9517fc811348. 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/396305c9-733e-41f7-9414-841b7a74bbbb.json and https://artists.proofprofile.net/proofs/artist/396305c9-733e-41f7-9414-841b7a74bbbb.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 0x0f02a1e47b14dc9ecf67b1345a10097cf6fc283d67e4914e8131944382b3ca25. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USCGJ1545943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b32b6d349f4ac09e736aeb324f67512f664010bb528350b46bc67026fe398a7. 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/QMZNK1500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7689b8a3055d3d8bd49d77a6ad578563d695318cf6f37a1f31cffa95b62f2a. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QMZNK1500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa03c3340a3a6b369662b846dd1e8e0cf8b16e2478bbc5dc1c10a6f4afb93ef8a. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T03:56:25Z), 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/QMZNK1500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943bf5fc16785a1bd72413a000e1d6f6326a6e332bb77a585666dc1e22b01485. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QMZNK1500017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ce03858f24265198515b844de7313246c68edfc4f41a26d8b363dce5e3262e. 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/QMZNK1500018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a2b9bfbbdf4516ff20d71f6eea70e4e4280cce203fadaecdf56819ef000daf6. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QMZNK1500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd272a885456563b273e9b97d6dc357f9f5b633593c32a215f3758aefa9af8993. 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/QMZNK1500020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a099b480332c4e4b309403c6a1daf6fca508d1c942a008f3790a677659916cf. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QM3LS1800068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e4d2a66c40458ab807fd5498219052f7f7500da75bac9a72a99104802581d9. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QM3LS1800071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd28a0f285bd95165c929430a1332ccd84611d1076ee46ef393c84b6f5e015573. 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/QM3LS1800072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02afd4676f9e90d5b32ed1dd03c5e2b50da58a9f4f816baf25ac157424c9b7f6. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QM4TW2265281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef065bb81ec216bd43d6e501ae938d29543afd3afebcf97975028e36b0f032ff. 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/USMBR2315761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb60014e55a413b9a4029b09e54ca7659922d76f8cc43a5faedd7a66ced92ae3e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USMBR2315765.