Jucifer is an American sludge metal duo formed in 1993. The band's members are Gazelle Amber Valentine on lead guitar and vocals and her husband Edgar Livengood on drums. Jucifer is notable for the ex
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 0xd0116508427981f8e55f47433cfa09b54fafae1592712fa6f49314ed9ad23e72. 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/9325c5c8-d67c-4588-901a-c1d39420e7a3.json and https://artists.proofprofile.net/proofs/artist/9325c5c8-d67c-4588-901a-c1d39420e7a3.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 0xb400373c6089ca52f4b52e379c4a083546c8171bbfdd78f833b4cbd0d0a59bc9. 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/US72K0501201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08372ebe47726b860405f6020ec10a71d937425889ba8e4441fb4f9c819e8a4. 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/US72K0501204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ad3e019d72a02a56b10a0469280246172b006005526aa9bf0d3ada4dacca31. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/US72K0501205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ec177f52c30571cad3e0ec843f34d4ccdd0faa8f50a77ae8a5983ff973a547. 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/US72K0501206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca5a09afc857b2c5527bdfc5c2c1fcbf4a50bfe9665c58388aa117ef1070fe79. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-19T21:40:06Z), 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/US72K0501207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33c5d26fedb47170f559a4f85c88697c9d6464cd80acecf586d45428ed4b7bd. 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/US72K0501208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x561052924948e56b36380f18d8cac49c067d81c9b8f30304cc3be1fe2ca68b05. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/US72K0501209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db73b2b15024a8ea3413ccd99141c827ae38be22909efbcfa91549a6263088b. 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/US72K0501210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8719d1c1228827d231700ad9805f249dd6ee374b3921036487c6c8c39c1dca1. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/US72K0501212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa43b054360712fac81fb9332b4b22089f4fd81fce1146d631bc2f387c9bca690. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/US72K0501213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a87de83b0e8cbcb9a0c4a7c7d427f67633cdd93f592027b7bb3b013c865e27. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/US72K0501214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37757db647ddde6170c4214f55c73db5e332d1169c6e5a2f0e135b3258aefbc0. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/US72K0550202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeca72dff4e7ad6a48b67c3aad6658b9872718e0811dc21c8129ac59c435fc94. 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/US72K0507201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62590b5516a8a77df4ee5a09d2ded239a0a0aa6b5db7ff4827570ff9b0bc6d10. 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/US72K0507203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a5227a74bc5ea414851f7eb4e9f89a700a9e831155e6c90099e4e006bd11e38. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/US72K0507205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b6dab07d995d08476e2634ba722f8bbf1aa276d98fae231b5c7a07b8d7e2825. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/US72K0507207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18baa801b9f40fbd3bcd2abb707391b857862c28603a01931c0dde2b8376d3c9. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/US72K0507208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe8d242e80edc6234a91430193abab751e386fdaa273c0324c7020b2d04b82e. 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/US72K0507213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe718cfdc09f9d62ed91b98784df084a8867619e6966381e6249994c47aca60b8. 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/US2640659604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b4cbc1a9a9bfb80d69fdac42ec4ed6477e1476a87a92af52f6cf2b87cc023dc. 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/US2640659608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4079868925501865332ae4be42800eae1948c8752e1a0252d5649ab34666907d. 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/US2640873109.