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 0x9b5c8d0c3403d46a3f6db4ec0de389e71d03e79cceacf1103192b768188eaa50. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/feacbb64-d5b5-4f4e-b0ad-b4135e6973b2.json and https://artists.proofprofile.net/proofs/artist/feacbb64-d5b5-4f4e-b0ad-b4135e6973b2.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 0x418909e0fd217d0ee6767d8590120a0bc84023cdeef6759a03894c5f56e660ee. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/CH6541929719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01afd94304486162edea3aacdc647215a3d0a7d1364364180eb139351c05e1bd. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:01:14Z), 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/CH6542072581.
Móveo (Jack Mazzoni & Alien Cut Remixes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be672d6fe624c2b1584f2c725c56306ed7ee384b59c8fdeb07e8b7f2a3ef17c. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:10:45Z), 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/CH6542082217.
A Festa Non Vai Parar (Tss Proyect Remix 2024)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e926b637005e55a261e2ea8a032de4bd1e62824d3dc08c5c5d83af2017ea23. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:11:01Z), 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/CH6542421411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28682e164c936d5c9d57b313d26520510b9da36d7442f88fa722aba1421e38fe. 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/CH6542429070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9879de66605d005c8f0264dda2f8d46b57784cd05592dae3c71567d0098c180d. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T08:45:51Z), 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/CH6542502033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21061e45bd5b3cee210a50cbe0eb765ac97469e14bdc5be08c105ea660c90cab. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:27:00Z), 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/CH6542550366.