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 0x91eb06f8ab3247a99625527ca9614f084e6a7d51c979f4b1f32423357080706b. 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/b6668f7c-060c-4c90-8746-80755ff2145e.json and https://artists.proofprofile.net/proofs/artist/b6668f7c-060c-4c90-8746-80755ff2145e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Lesz, lesz, lesz (A 12 legszebb magyar irredenta dal)
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 0x38351f936169f8f5031c34ffe763b7aacec447c7eed29cea31535bbea987600b. 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/HUCE82200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa32c3f9f396731e9560d120b513735835fdc135931b44167f67dc36f4e8ec065. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:47:24Z), 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/HUCE82200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8533a9a9f8a81ccbc2b61cae46306b27b1fa2e9ca4049f4614a975f62b63ee9a. 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/HUMAG1900042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad6f58fba329f1da612bec0025d7b92086f99d684bc65deefc1b5f4da291b21. 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/HUMAG2010037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x625d2c0675a3ba5cef4b7de4dab0292575309a1d3584f624d34d655bad841aff. 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/HUMAG2010211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7df1ec715ba8403b0dad67ac9a61f56083e6a5ad5ede1776195967f37ce6acb. 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/HUMAG2300332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323d2d75fcf6293f90eba79538b9d3d358fc5fe03825a46fe67181b74477a93f. 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/HUMAG2100270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcceefce91e14e8837df794b848664806574cc69c208e140dafb782fc83b3a242. 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/QZNWU2144932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f8200b4c7dc507c381da005ed62f9bb7ae74f8825846d3cf05b4c1256430e68. 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/QZK6Q2187454.
Elvonulás (Az utolsó szabad ember végjátéka)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc92ea101e886d2bced1a619e36cbee68d822841658bdbdbcb071bb612294687b. 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/HUMAG1900145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9772d1d1a6f7542a8820bbc7f826a16da97004da77e15d9ab214144de4b22647. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:43:25Z), 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/HUMAG1900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x865f72d8830b5285b9e6383fbfdf8898f159ce0cb3dd464e4c9819c2be0cba9c. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T09:54:41Z), 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/HUMAG1700349.
Best of Karaoke 2. - Modern slágerek (Eredeti alapok)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c56da0e9b9d88c427f63b09b9cecd89a726c3be737ef0bce6c659884e964a5. 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/HUMAG1700031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b252e5ba8bcf73d8755f090b02e6e1bfbbbb1778d26f9fc0de1c103ae73233d. 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/HUMAG1700038.
Agyturbó - Reklám Marcsi és Reklám Marci dala
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b1773c533c25ef469497797bcc60fde98c2cd8d13c159843ec9f5695d960095. 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/HUMAG1800263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb16bc06bbc18dafecd27273081edcda8b4a586b28a36ed81d1abfdd04c9598. 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/HUMAG1800265.