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 0x09baf1527643ffb2d2a240255590b39004ada53086c6c704a4fc063727a979f4. 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/e9f2dd3e-5407-4187-824d-da0ecde55636.json and https://artists.proofprofile.net/proofs/artist/e9f2dd3e-5407-4187-824d-da0ecde55636.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 0x99246da0d614d3652f97698920233b94731eaa99ba7430bf8a8d55480207bff6. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FR3R20848001.
Appendix Recovery, Pt. 2 (Finally Recovered)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb6f30feae2891eea1faf79cbe4b8cbe907b1e3b8e190608e3c64a534c080cf3. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/NLFL71800108.
Noisekick Records 037:Drokz - Defender Of Terror Volume 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4969d1336bf76a7d57f770726d4768cfd1a8ebc430245cb58efe73a312d8f7d. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/NLFL71900386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd88e3b26a1a1844d001ea7497dbd4adbcb3eae9b44658874baa48f7526dcaab. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/NLFL71900396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1905c25a36fa35592a04ffdfec4cf32417f245951cc21c96b94134c104c60dd6. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T13:52:01Z), 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/QZHNA2029417.
I Was Born Hardcore And Raised To Be Terror
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba658d2a12e24735fe9c88beccca139139bdc544d3ce9121c7fd26508c760dc2. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/NLCK42216831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53bce698fb10b3104ea4e2ac230fdaa91ee25e05e91262941d3a0fa0aa79ca83. 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/NLCK42232496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842261d494fd814340e23bcd8af01b3b6b3c4c5b885b17b4b56b04bf227e69f5. 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/QZTAT2361924.
Stubborn, militant and dedicated album sampler
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8405307da59b7d03703b664c6187155da4d50772a3d3a9ea03aa2757fc58b3dd. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T13:52:01Z), 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/FXQ692300323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c21cc1f748c935121c81a23ca446a4e1749537e43e4744d4e17807040279a01. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/QZES62474680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad231705e6cf3da972eb5a7499ff251427aa431447955d2600745d45c2a3e95c. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZES62474681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9bbd7ca5b416f6c3e21122445b8335953dc090b97bb792cf99124e75dff913c. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/NLQS92400098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5997360981897e9404fc9a4af6fcd9185c67b28d840bd7ccbb4a0efbeb4ab752. 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/NLS202400231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa02319e385c36b60bf89088ee2fea98276332bb86c5b08ae8b552e1cb674e08f. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/NLFL72400788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad1d667aa3466ba14c99198850fefc7de552f9f5c644b5a3ebdc37f3a4e85b6f. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QT3F22488296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc3430a18b5b1865384b95a1601d40b34a4ffef64ffa41619abc5eda861e254. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/NLCK42500441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765fb01e441f32e98b2ffeb1e1505646cff17b433f5ae13aabc2e5bc3504a432. 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/NLCK42500442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf80721fd91855590dc0a632f92092b94b1d5d969bbb8f1e54599654e6adca7a1. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/DE1O62444533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50eda90d4a28ac2485a666aa68d1391bf457fa663611f95a781a9bd81da30a2f. 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/DE1O62444597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe29cab865fec5db9a2e38e190c8f27866ccf0753b48c197ac45fdc552b18174b. 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/DE1O62444370.
Where are the old school terrorheads - Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa9e6b0f899b20d680a52110567fa3b87b4078d2b0c708a2023d1633f1f11e0. 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/QZDA72557496.
Decades of Dedication (Decade of Early Hardcore 15 Years Anthem)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99cd9f1170a7d4f7d55644195afce69b13d03283b14e1fb4eef9f2957df13d03. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZMER2569770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7338b8e30ee464e0acea17839a69acd2966e916a14543637a83318b5dfdd99aa. 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/NL6W32500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e26d9b77a062affef64a5d1b9a880879ca9326a7f54547317466c08754662b0. 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/NLFL72500529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f31331bd15ee5476d1dcd88f47ede7cc62e8ae6132989bc2520fb329504596. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZTBA2509308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e0be7733b118689df65db070ea5ab011b39a0b1e3a335c30bd4a839b6fdde48. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZTBA2509309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a7c25cf0b8b1b38807ea70845a9d6460acdc2320006765b47bec2d2c84ac4c. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/NLCK42512119.
Fight every day to avoid being boring - Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89fa5542d79ab229312226a6e917e5bd0eb6bb6bad7b7db487b2f1bbc587f4b4. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZWFW2506525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1cf55cb5d20d539f4f3c4320c1486ecbaad2f99ee5f99e10d86778d9000d9aa. 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/QZZ762547056.
Masters Of Hardcore XLI - Vault Of Violence (Mixed)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b0ad906fc038b568f6aa7f7a7b0f72a64e3b9aac6b01ca3bb6130533e8355e5. 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/NLS241900135.
Poppin' - Drokz & Hardbouncer Remix Edit
Masters Of Hardcore Chapter XL - Tournament Of Tyrants
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4faf486f1a3cc18d3f622cf8cbb1be9ac19386b60453ecb23b93e55785ef008. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/NLS241800241.
Masters Of Hardcore 37 (20 Years Of Rebellion)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57425332254a51cf6c8b3ff765526341e64b0321f723edaec7817a42c055d477. 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/NLS241500265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd22156e58a6fd1ef8c9508867c80e87fa71696408281cff04a1ec6c23fec7428. 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/QZTAW2399496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c0878bd3260d1f068ae0991b433eb8912e2c9050cdc6dfc924518cec7009908. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/ITD131800044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x456fb8208a7c13610ba155a38abeb6fba23583d4e55407ef9bffadec25acd7bd. 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/SE6QE2362248.
Masters Of Hardcore Chapter XLV (2023) - Cosmic Conquest
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d6b440c1762ddf515bb07f368d6607a7e18e05b61de0f546afd9dea5764e4b7. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/NLCK42220328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1359de7fa73222f063e873040422ec31509452ec432b3cbffe24e18b3a8f8f27. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/NLS242200146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c21cc1f748c935121c81a23ca446a4e1749537e43e4744d4e17807040279a01. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QZES62474680.