Paul Hertzog is an American film composer and educator. In his brief career in the late 1980s and early 1990s, Hertzog composed the soundtracks for two Jean-Claude Van Damme movies, Kickboxer and Bloo
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 0x78b936587a59441b08665895c79ae7d09db1394fb4842945e44339c2b9e058d0. 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/8fce2d01-55be-4744-8524-25d56b3955af.json and https://artists.proofprofile.net/proofs/artist/8fce2d01-55be-4744-8524-25d56b3955af.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Kickboxer: The Deluxe Edition Soundtrack
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 0x587dc7f888a0a502c712c67521d024f863b351464b4377f4103b76474fd5dba0. 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/USY251483750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a89ecbbf7ad464cb0196febb3f2f5255bfc3d5104c870c9f4ae2f903575bb49. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/USY251483751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71334a2b977b6994bc246b0e692572d4ac8ac631830711d3f2e17cac585539ad. 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/USY251483753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee743ce8fd4ae2d79716bcbf6d3579d101def6ec62b254e7bbdd98463862aab2. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/USY251483756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890cfb0f9d030121be78dd806039e6265a456eb35e7a1973a5e0126b42c74e46. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/USY251483757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa27abcee787640549030805b3620c2f3d52de0525dfb15fed15d00986ee87d72. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/USY251483760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb24f29c57349ef7d71c3045d0d3dd6c1a4192a109ea63f4da8d0d685a6d8d744. 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/USY251483763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3229da9282c5b0bf716b095db383ffae48d5b8ec866f7116c95eae82bc3868. Chain 2 (Bitcoin): anchored in block 957752 (2026-07-12T20:53:32Z), 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/USY251483765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4614dd59a6fcc3925c1923246e75d23994ba8c17d16bfdb5f942c7c93e8fb63f. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USY251483766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5788369dd1e124f8c0f211751c3f999a0c89fca70eba73d4c4b5a48b9e558ee6. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/USY251483767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b50b4f771bc184d1532047af5484b84ef8a22b853814ed5328642589e292165. 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/USY251483768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b02954543092d43fa0c6ef1bbb86bda4e81c4ea5a21f19302fdfd2f441f162d. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USY251483769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9e37c32799dcc37d38ebef01884bf733a51675d9746bd53bd257ae28fbb360. 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/USY251483774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb02d6d2ee283d3a6d04662620ade6c447ff57e1709f41bb48ed39a14e82458d8. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USY251483778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8b8310d1be19a6188c016cbdc6fd97449c8eb2bddb1628df086903b3c85d66. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:33:35Z), 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/USY251499989.
Bloodsport (Original Motion Picture Soundtrack)
Breathing Fire: Original Motion Picture Score
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c8a836ce8c772b8403486ac04c2ae8361270f3c36fc76ad10783a749c0218e. 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/USY252176479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a16c88172780f02fc5ebab6f35aeae17f35a3d4a421113ef1e8286f0bc14c62. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USY252176485.
The Last Kumite (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf131f31c720e851160cda19f5c1ec1e249975573366a2d8d0c623d032e621b24. 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/US6A32400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc83a77b258321d0328cf2671dadcd01475d01b37de56241433385dc81992c98. 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/US6A32400011.