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 0x27024539605d0cd987d84cd505fb13d4cf6d88eb3c6274a4fd6c66cb07bc1963. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f7e4c485-08db-43a7-86ff-e88ac7049482.json and https://artists.proofprofile.net/proofs/artist/f7e4c485-08db-43a7-86ff-e88ac7049482.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 0x8e6aa07fa30e7f5885bcd82fb4265cb2d001b95c7a01c9d9421064c9f49f9a62. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/QZMEN2005502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x142ddd6d3c61821879e194c7191275628513539b08ed5b30952ebcea4aff2235. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZMEN2005500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x472916a787db0131a63c5f1d8bc29dcce24b213a2f82fa1b7798dd75cea42235. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZFYY2225406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0386efab3430742c27808539eda485c5a7623187964a83152cd8e3103557a987. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZFZ22256781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f29d0c23ad4361cea7b8a52dde4b10562c98507e96ed55a94951df3bd1b34dd. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/QZHN82284290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b1de9439cd3d2a5c94cb229c0e9d513706249574516598759295369e38e8eb. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/QZK6Q2209914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49108e5e4b2bc8121d2fceb62319d0d4befeb575fd7226741b39bbfacadebf86. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T08:01:36Z), 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/QZK6K2335225.
FOU DE TOI (feat. Rosskana & Bruce Melodie)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b511a49befa10457c219609845ac6dbdfb49ffc6441724c8dd0805f62196b1d. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZNWT2372594.