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 0xb2d4c837df599e3c5488cb2418f5d9dc80e2e000d5cce108ad174cef6d7848a7. 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/3d705275-66f3-4eec-8e62-757848bdcac7.json and https://artists.proofprofile.net/proofs/artist/3d705275-66f3-4eec-8e62-757848bdcac7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Relentless (Official Masters of Hardcore Russia 2020 Anthem)
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 0xc5b553825057a5a276b906e4c4349c846898f3f9f94d632fcf1efecc9b4a17b7. 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/NLFL72000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb21beb70a706629fd7695555088c4d74aed778cc94b58ac2f2c31b1da97f087b. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:18:49Z), 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/NLFL72000068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c6d08f7319bbb94747fc2cfc6cd66e75ed7bed4ce923d092c6a021979782f2. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:24:15Z), 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/NLFL72000441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bebea9a34bb2b80ba9dcb115a5e6945fb832f012dfde4c829c475600a32229e. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/NLFL72100146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ac54b7f09047e27477d0e495d4e0a8feac3af173c36578ec366650bedcb533. 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/NLFL72200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e7f7d8c647b4568b5722208f91054b5cf5604cdb23a64aef678eb5f6e62192. 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/NLFL72300165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e59b32efac22d8936f1c0bd4a2ddb996631f63913ea91c36c69ff6f0e3799a. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/NLFL72300948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f43a9eef20aaab3424abdf385c0db753c84f8da4a3d4d729ac28eb7b8164bd. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/NLFL72400075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c4ee269e143b1c8c15a0a80ed3bd002eda429f15699a8f36181c642131bff3. 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/NLFL72400191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff0fb0a5a0900e80a8950b06ad486311129b11b5e4eeaff2cc34d8dc6eec678. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/NLFL72400589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e328058b7317eb5a39aff55addf232872d5259472f7ba0462f271d789e09a4b. 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/TCAJP2512498.
Collision (Official Collision Anthem 2025)
Masters Of Hardcore - Magnum Opus (Chapter XLII)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b553825057a5a276b906e4c4349c846898f3f9f94d632fcf1efecc9b4a17b7. 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/NLFL72000005.
Dogfight Hardcore Vol. III - Ready For War
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43e736b7f5fff2e8efbdaa3e34e02f2798bd1f9e6ed57e2522fc5c637efcf22a. 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/NLFL71800770.
Masters Of Hardcore XLI - Vault Of Violence (Mixed)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa5c1ee29ac064cca9fb0b3096b0d4b8033ce511c61d3bae95d2076c46aaea3. 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/NLS241900128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93f340464a2eafce64160a5cf4662ffc26198f6dc8b7e859ba5f7f977ff2da60. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/NLS241900255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ac54b7f09047e27477d0e495d4e0a8feac3af173c36578ec366650bedcb533. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLFL72200010.