Zachary Channing Fox (born December 6, 1990) is an American stand-up comedian, rapper, actor, DJ, and internet personality from Atlanta, Georgia. He has collaborated with Kenny Beats, Flying Lotus, Th
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 0x9d895844fb469ef04df46600e9601317055fd3412e9b65b1074d13e7c41e8758. 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/49edd7e8-da12-47fd-b63a-ce6dc67f8352.json and https://artists.proofprofile.net/proofs/artist/49edd7e8-da12-47fd-b63a-ce6dc67f8352.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 0xf1961817f33c3eb4dd7b0ad85ae6efc3abf654bc200f743aa4771c0928e3c2e4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUYG1259076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a4e8f34436ac6fd6679670f6a2ff9b08d00d5912ce17611fd0403ded7685ceb. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US25X2004414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371012b0e6a2d8d60082b3baf26d243cb85ab50327326c1e76ade52a58b2e62d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/US25X2204148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa389910fb3573e3dc4d35d600c71d7c56b64b2ad599f4877f024259056ef589. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/US25X2204149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec98179c327727284cc37ae0eb9e5a7c00bb1e9f6f35ac016286024d328fcb4e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/US25X2204150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc9c1871ec28f489d61ffe766da8695875c93ae90a599d28623eeaee46b6dd3a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/US25X2204151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e4db7f280314579912783adf43b28c552a6eba12f7d136901ada37faca3ecf. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USYBL2300449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0ce43c87522f150cebbede4a1c89ee1b641bb4350ce44ce46e25fe9ecf759c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM6N22196822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb5dbe74462184c62f4a0c18d2754162c5a772d4cef01c7a6721da5b91ef1d6. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZHNB2489831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77157eea32f236ab2696ded1aa2a7555fc713fcab826f3caad6c7630cca48c61. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GX53U2027320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a27d8eb4ca6dc5f549872432868839f611ce1dd0140bea167993126d05d18d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBCFB2000017.