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 0xdc480a96199d9d30a218495d01cac75fd96b3150a194b0946c17dc1abbbe0d09. 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/9e24441e-5fde-4abc-9268-c4363e1fc87e.json and https://artists.proofprofile.net/proofs/artist/9e24441e-5fde-4abc-9268-c4363e1fc87e.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb9751263be9467af6f65ab6267f2412345a19d804fcc54dacd7bb70bee1805. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CH7811932791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb9751263be9467af6f65ab6267f2412345a19d804fcc54dacd7bb70bee1805. 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/CH7811932791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4579500d2a2a0e14e22d3c09bc24dba9803a75e432462e6247b14ccd6845f06d. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/DEN062004426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fff683c12911d082f6c12740d394b02031db4905eb78c94c76105e929fe84a7. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:35:05Z), 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/DEN062100154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0890d74f78e3ac581710f03daffe35fa26f66ef8ac8037968b4eefcff6413bf5. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/DEN062100370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a041906e1f2d41e244c79a004fe659c71e83e6ff4e2037f2b3bfab1cfe3753. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/DEN062200237.
Alone & Solo (Festival Mix) (feat. Luna Isa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca239b38851a7ead953949630d9bccb4b0fe1e0c7a44f30e7a899b06046a59ac. 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/DEE862401279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5432f4868c47e2f5e9768d0030bce0ec0b08d1aa748a94c3e906147db35121d3. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/DEE862400885.
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
Kontor Top of the Clubs - The Biggest Hits of the Year MMXX Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4358622f586b347e1345cc33ab0f375b4e05f18c8bfea2f5608782403d0c461f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEN062004731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2eec4cd54f414dd8ef836a97bc1cc969cfd159e05993ef370bd18c3a520d19b. 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/DEN062003235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84e075c117cd580a7f2e84bc73ca7af9bc5525806f652e55102095d422885c3b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CH7812365945.
Kontor Sports - Nonstop Powermix, 2020.03
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb9ef0273f6eae07ec8e7a0bbdfec23cfaa7a1301ca7fc6b4d9744f05a24b3c. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/DEN062003106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd91f45c7598c6034fce7b1e53bf103c9da4708ac46f24a9eb08fa72285a8e22c. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DEN062004516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c42dcf2c2b914b61340bbfed4522ca82e59c5766a655dde3c8522f27c1a148. 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/DEN062004718.