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 0xcbc4a7fa5e9bb9f9ad8f358f6f24b590bf957befed8d7e1da54c09af074a3700. 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/8e51d307-4472-47d5-9c3d-89ff3af88194.json and https://artists.proofprofile.net/proofs/artist/8e51d307-4472-47d5-9c3d-89ff3af88194.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 0x957d9e60249464f398a37b5873cf31c380943da1515179a7242102cbb3aac125. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QZTRX2495137.
Eye Of The Storm (with Hunter The Oracle)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a7eddd48ff76364189415cf820b05124f123f37df3b16149dcc7de96df8235. 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/USLZJ2484072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce840b2d82fab4bb9f34e202ca30660e7f4d7e4f89d125b6e944abd028c87db. 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/QZTRX2453284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa040ff9c36b860239fe71264f14ae4fecb891d0792a5aac22db053d1702cb434. 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/GBWUL2478535.
Summertime State Of Mind (with Mellodose)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7ae5ad6a9a62165eef50dc5b20dafe2b7872955463377153e1ad26ee76ee4c. 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/GBWUL2479095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b8df16c5aa60c3a2d948c2342b8b2f54bda862984d58b5232190e21174686b. 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/USLZJ2474398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa040ff9c36b860239fe71264f14ae4fecb891d0792a5aac22db053d1702cb434. 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/GBWUL2478535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb3077ec6510f3f0d1172685f2732c628b19bc5ed0cd414d985fba51f072e266. 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/QZTRX2421769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x658b56b617b5f2425071ce243ab49ab5f8e63c386f31f39435b8a66404546a35. 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/QZTRX2420211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b8df16c5aa60c3a2d948c2342b8b2f54bda862984d58b5232190e21174686b. 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/USLZJ2474398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff172ddcca29d5e24a0208116fca976a3733c8d822bdb9d28a02196b784aba7. 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/USLZJ2429833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff172ddcca29d5e24a0208116fca976a3733c8d822bdb9d28a02196b784aba7. 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/USLZJ2429833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b2954b7172a2db18fa7d12fe7367591f606bf733b72318c3fbdb1dd9e649ca. 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/QZTV32343033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0e7417e6c7663b851077ff57c3e6fbb9a8e25157a3b3f9f007e7c4956473c7. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/GBRKQ2271646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dcd196a23ea776018a34f3d09e0ed7c4687dff0c28fc747b2f2d006ee7ff8b3. 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/QZZ8A2428465.