Jeff Loomis (born September 14, 1971) is an American musician, best known for his role as lead guitarist in the progressive metal band Nevermore as well as brief tenures in its precursor, Sanctuary. I
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 0x72ad1901ad0d41bbdc0079318a154b2e9de134bb3f339abf1d1df2afdf582303. 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/d585d9c8-fd3b-4625-b8ff-1cc2900bfcca.json and https://artists.proofprofile.net/proofs/artist/d585d9c8-fd3b-4625-b8ff-1cc2900bfcca.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 0x2323ca80b41d816282c8ca64dbdca0180631d576161a941a10375035403a13e0. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:27:47Z), 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/US4E40851002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153bd15400947034a40a86d8f8770eb275144e9ac06dafe3121e5ac80ad84eb8. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/US4E40851004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed8e45c55b83d8c5dae096b7056a11c35689423da4a089ad35b3d023f5fdfe22. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/US4E40851005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70782766aea389c8e58368e2542a75c13c6efeedd9452d6934b496511fa45c17. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/US4E40851006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40005d314276274bfcf35aa68bf90d2fa3f0e868bdf2c17b3a88a4c2f952c448. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/US4E40851007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87938330b2c5aafe645e278b87265b80804f7d466b3cccd014c1b75240a28027. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:26:51Z), 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/US4E40851008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x346b3cfae33c570b0a98e1de16e3b8d3873a7583f88bcf7db49823fc60938256. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/US4E40851010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c0fe792cc76a18ad024066451442469f47ca102529babe895c2c6cd09f0a2ea. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/US4E41286701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea43c0575c521ff12e7e7f22ec0c435f87a6aaaa8ca7af9a216286cafc89467. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/US4E41286703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ec6f252e7528b38c77b4dd4057d9e1ff9ab76567d335c989ee2192ba348779. Chain 2 (Bitcoin): anchored in block 957702 (2026-07-12T12:25:41Z), 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/US4E41286705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc76c8046459b7439670ffee2417d1c03b27de9edc96c5d62a06b907b4229064d. 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/US4E41286706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e9726c2364d9a3188e9f4d54a99aea6940d5c4107424383e70a14c6531168e. 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/US4E41286707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4930605de3d8c9fff8adbd266e8dc90e3b29e606dc3a4d0cab20902fec96c3fe. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/US4E41286708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f575ed04de395893fcc0a4599418ede91239265947b28797d19ab324572b5b. 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/US4E41286709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f930974e28ab19ddcec83e59ca5358a3cf2fdde779bcca6a8757f88ae87ddf2. 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/SE5DN1122102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedface48a0ce5cbc655c1d174f31c89d2547303141560e6dca6f8a96316264fb. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DEH842100221.
Deserving of the Grave (feat. Jeff Loomis)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ab59c5dc706e6006ab9f426c862b7771d53a131b7425d50f472f46f3b3342f. 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/USMBR2316043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94385562f64365863ba3704dd4c116625f919a8b557e3ecd4d31aa00cebcc89c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/US35W2000201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08d7f4b99fe6bf17c839d682faaaff1fcd82c4778ae4852b1ce282af55d0c5e. 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/US35W2000204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ce197cbc709ac26760ee5682c3ea3e03c19e1f6ecccc9c643406ba415b4945. 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/UKUVV2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb8d914446bb226866b943be8489d89d15a7912e7645b455623e2ffde23e8f2e. 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/UKUVV1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ce197cbc709ac26760ee5682c3ea3e03c19e1f6ecccc9c643406ba415b4945. 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/UKUVV2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb8d914446bb226866b943be8489d89d15a7912e7645b455623e2ffde23e8f2e. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/UKUVV1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ff0211d4a71108012b25893f489e967dd0a2a0eea09cdfedcf7b093d3305cd. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US78S0510837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcae8510afc52a6422b0adb7d0768028108343a6f2f55ac5ba99ff9939c5c5a2. 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/NLB931802409.
Deserving of the Grave (Instrumental) [feat. Jeff Loomis]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2e37001ba0568e86b526f5c3bbff9c654e9272c52035ef9271b4738d7bdf68e. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USMBR2416411.
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