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 0x590d8908beccadd6768f8f5a12ac94ecce855b6e8fa665bdedd426eb74394ef3. 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/8341269b-49a3-4a84-ac39-9ffb12a1c84a.json and https://artists.proofprofile.net/proofs/artist/8341269b-49a3-4a84-ac39-9ffb12a1c84a.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 0x0629a2d4a1df16ef907444b8079fe9f2aeb0173f4505ef3b2f7f935c313f3d1c. 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/PLH751300362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde77069c41f80858191dc25aae13b542278632406b3b20877b31e76de4ac2bd. 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/PLH031200010.
Ona tanczy dla mnie / Ona tańczy dla mnie
Ona Tańczy Dla Mnie (Radio Edit) - Single
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba8bc5100f1847d9830d4b79e8edcb37cd67d4ff33d8e07c06f85d85b13ffd57. 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/PLH031200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e7acbbaca9dc41961e275e9352b79810d430b2e4556e95f871cb6c4faa66c0. 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/PLH031200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde77069c41f80858191dc25aae13b542278632406b3b20877b31e76de4ac2bd. 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/PLH031200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23e3ed52f3bdb7683475ce2d34f61130bf9cba143215130b0afed339303f19d9. 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/PLH031400046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa67598faa831b870f89090b26c18530ea925599e19339e686d055dc51f69729b. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/PLH031400047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a980484bcdbddf0c070f413da65cb643358295b6ce34ce419bea56874652f4. Chain 2 (Bitcoin): anchored in block 958656 (2026-07-19T04:04:08Z), 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/PLH031600068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89697f777ecd1240ede31635cbde266ba160617b1209dbde579a4de50e0ae8b6. 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/PLH031700070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa0057f30b8d8b5ca3081243aae5a7b7e61e0a9410bec3b8fe5dde994be66d3. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/PLH031900079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf8e9e350e98cde5e64a793d80eac135420d75275b5fb9b6c6445216afd8014. 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/PLH031900081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaedb7750e0caab29672254438bedf4fea27869718217fb6af7b753b2b8d91404. 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/PLH032300087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802924c8c2a9a7d9bfc95d2860b4d0f1575bd089ac0e351ea147b42a030568f1. 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/PLH031200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a65c69ec9702bc393810529c79246d970aa8cf7cf661a48d86857bdc5c6339. 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/PLH032400089.