Hollow Front is an American metalcore band from Grand Rapids, Michigan, formed in 2016. The band currently consists of vocalist Tyler Tate, guitarist Lee Albrecht, drummer Frankie Mish and bassist Dav
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 0x94d9b8b324a11dd70a7db985524f68e2114b1e5414ced855451a08f0489681c9. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6ca9f64f-eb2c-4fff-8177-48b724b97839.json and https://artists.proofprofile.net/proofs/artist/6ca9f64f-eb2c-4fff-8177-48b724b97839.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 0xf16327d928085b1a1851e189ce6b5b0a20f395ed1dea1dafdf82ea1e9a29e81c. 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/USCGH1765976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bad84ef1ec638616be7b38063dc8c44710970f8823bca4e334d9b449d2c726c. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USCGH1765977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59bcd5c21fc71814e2f79fed8010724c1fe5523bb86a1e376931fbcea1e0e47d. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/USCGH1765978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58167e04d23fb0e415402a2e9eb5fd0593acd90bd119facb73f1cb68c0ef5a7b. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:01:16Z), 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/USCGH1765979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c56c577fa0fb3905093dbd53152b2c02c17c01b5c0b999b64a71fa77218dbfe. 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/USCGH1765980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbdbcf3c1f64e8774b4c59a0ce94f43f5aae3677697a67bc9dcde7037af6d2f3. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/USDY41863620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbd6c47bb2d73620db427e01b80c300fc108b6c9a65c6028d5c3a17134fc09cb. 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/USDY41863621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e9d4a0da86469265d35f64c981184d9739945650ff962dd00792ab52887a46. 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/QZHN62000401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeadd359f5f4caeb66914ac1f7a9e203e5960a570a57c9b9e6b430a90f13d322. 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/QZHN62000402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83061bd2910e735cef97226d45700e6d50161fce437524baa93e9ac0a077a2fa. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZHN62000403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbeee16111f477d76eb3211274be178de5fdaa70c4947f6feb04fa9ef81fbdc3. 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/QZHN62000404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa46146986f88547f9952100e93fc3a1dc97c789769ea7b007ebd76aa230804b. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:32:05Z), 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/QZHN62000405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1bf0bfeaf2b65475f7e3113a3eb3cd9b447cc671e457312da22f62ae1dc67db. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZHN52080538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b73dee9d0580d4f4253b62fb549c6a53abfa9db4fc4cc6a519eed1d2e2c16f. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/AUI442000230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9732ed477e930ba9cbe0c5d8d3355c649bd32ef8a4b99d94d52fd304ff19959. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/AUI442100094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb73409547914758f5d4c22b0c4e4d72b84920da6fdb4db24c14a57f7d5d3fc21. 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/AUI442100097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4baf311bfc5aa942bdc0e370907298e68c2347c101f575b1c5fda0fcdc747d42. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZTBF2387535.