Cory Gerald Joseph Marquardt (born October 11, 1989) is a Canadian country rock singer-songwriter better known by his stage name Cory Marks. He is signed to Better Noise Music. He has released four al
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 0x6c0ff93b8c212a50fe37bae4a4043fb13bd2b4d0379f2d6756054ef6efda71aa. 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/f6b94e39-b902-4c4d-b84e-2c3ebb60de41.json and https://artists.proofprofile.net/proofs/artist/f6b94e39-b902-4c4d-b84e-2c3ebb60de41.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 0x923b1c0ecda6dfe396632a048e0c1dfd8432bd419330b814f0d6665f9e32c704. 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/CAUM81500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9794248189f0a7297d0c7cbdd0527f75c896b2b2c406dc3546523e043557df00. 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/CAUM81500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3758c77257498bebb18b9e77ea583c2199c446e923df22238e2c1627c1b7c5dc. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/CAUM81500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa297959bea99f3b6940d0b62e2c08ef8c2af6d575d500e84618f9c19e1f22299. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/CAUM81500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ba29629ae7a62a565811f61e47900ed2a6240da391da36e7a98ee220681b0b9. 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/CAUM81500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd988d0bec7df8d8b12e30bed15bf9d17ea854e7cc1c4ce882e85b98e425c93cc. 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/USDSM1900077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aadeec8db283d641155e74d4b5ec75709a46dcaca156be24aecb36499dc7b3b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USDPK1800041.
Blame It On The Double (feat. Tyler Connolly of Theory of a Deadman & Jason Hook)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d8602f88af8f5fa1e93a6ba067f8dfecf52089debc8d3c20eb9bac81de6c0c4. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USDPK2100069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a605ce721f78f2d1ccdc96c8d299833b90ddd14d8674c5cbe22e7d44796cb9. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USDPK1800040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0fe253028b949998b90107ee7f8732af84a06c29cc7b11c57e53ea06750e598. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/USDPK2100070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dbf3ae0d892613a51068f0bb950ffd1bd4cdc35df40b6c0fd2a2fa4f4997ab8. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/USDPK2100071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7fef496848ac66eba3ae164803396daaefa9c3e479d8d978cb0dddb211742a1. 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/USDPK1800036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a6b3033ad52723399d116d47d31fdd4ed978d2a01b54385d2a3acd81d27474d. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/USDPK1800031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b2ea3d4ac491b56670013a46d40f9ba36e51229ea53d8989c477e33b8582314. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/USDPK2100072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca57bcd59eae4002d9a2b810a3242a78375adc6167f59ad59659eb6d3c01b27. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/USDPK2100073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8173d58ffe4b03e124d0efd1bc821a733c83a38e8dc942e14f115a184cb8e839. 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/USDPK2100121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x722330e40e004d14dbd1c5b686c98cb334e9ee33de8ce732b9a4028cc74478e4. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USDPK2200167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6964be84c42f65c0f1a1340f71493e07915ff57666e007a6161ceae6809ff36e. 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/USDPK2200184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6df21d5c7f4cf113da160d21e9eaba6cb3ff6a3ece44e6aecad7952591613c7a. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USDPK2200092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d2acb46e73dd006cb944723b19ff815dd0f21721f068cb9ce97ad26d9fc835. Chain 2 (Bitcoin): anchored in block 957688 (2026-07-12T09:52:21Z), 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/USDPK2400078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38fdae2a43690a200343dd815ee49eae58df9670b90a03f1caccb993e27cdd42. 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/USDPK2300186.
(Make My) Country Rock (feat. Sully Erna of Godsmack, Travis Tritt and Mick Mars)
(Make My) Country Rock (feat. Sully Erna of Godsmack, Travis Tritt, and Mick Mars)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5503617789d2725aa0f3034198526d6fbb359723401d1294bc5ec32aabf51568. 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/USDPK2400080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x830835b400cbc42ef984eb8bee8fd5f6b4bd7590cfd0ddf9ca45f295c42af5d6. 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/USDPK2400077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5503617789d2725aa0f3034198526d6fbb359723401d1294bc5ec32aabf51568. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/USDPK2400080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x830835b400cbc42ef984eb8bee8fd5f6b4bd7590cfd0ddf9ca45f295c42af5d6. 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/USDPK2400077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8108388979851218786bdd5d0b982f8f466470104cbf53d703e64a59062b72a0. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/USDPK2400090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e8d490d531526431678af231cf26ef6aee5e7336f35259d7c993b1f5948206. Chain 2 (Bitcoin): anchored in block 957690 (2026-07-12T10:16:40Z), 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/USDPK2400092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb30b369b32a32d2547fb2fc49937f5367ff481a9a04e4958bb3881489489f33. 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/USDPK2400083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e8d490d531526431678af231cf26ef6aee5e7336f35259d7c993b1f5948206. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USDPK2400092.
The Retaliators Deluxe (Music from the Motion Picture)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x830835b400cbc42ef984eb8bee8fd5f6b4bd7590cfd0ddf9ca45f295c42af5d6. 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/USDPK2400077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x722330e40e004d14dbd1c5b686c98cb334e9ee33de8ce732b9a4028cc74478e4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USDPK2200167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7a2a4a12703d0539feeab2e48466b6e2e4515a397f091c79941bb1809eb553. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USDPK2100032.
The Retaliators (Music from the Motion Picture)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x722330e40e004d14dbd1c5b686c98cb334e9ee33de8ce732b9a4028cc74478e4. 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/USDPK2200167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7a2a4a12703d0539feeab2e48466b6e2e4515a397f091c79941bb1809eb553. 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/USDPK2100032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b133a02716bb0458ffbca3e6fecddc0fbb177acc5c80c869967fc7c0838f4a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USDPK2300089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80bec7ade2b6e0fc546dcaafdb17ce529f4a4b6d583087183b3ec852445f83d4. 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/USDPK2300097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b133a02716bb0458ffbca3e6fecddc0fbb177acc5c80c869967fc7c0838f4a. 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/USDPK2300089.
Outlaws & Outsiders - Music from the Motion Picture
Sno Babies (Music from the Motion Picture)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c968ccc04ea6bd05ede830b37fdeaa107de0533ecb995de32c600ceba1ecc39. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/USDPK2000150.