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 0xed29ca091eb3af15906f08701c2bb5b5ccc050ae714b4cf4515ec908d7d7bacf. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/df2d82df-2151-4a75-97db-94aa9f31a335.json and https://artists.proofprofile.net/proofs/artist/df2d82df-2151-4a75-97db-94aa9f31a335.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Risto Räppääjä ja Liukas Lennart - elokuvan laulut
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 0xd75f8704d8daa48820541e9345f6124d6fe2fa87d8efb9001a5f5b8c522acb27. 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/FIBAR1300529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d085d5d3caf1c2d0230e6d4d1576742678a1edbdf6956fd4f21ba39c0db4290. 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/FIBAR1300530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ac56ef08c587741ac3f0e75c12729259d5dae15a82dfdab83f71daea55f267. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/FIBAR1300531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc01370e7d63321c224b1dc86710953c75810ee74bab9abdf5f399171d46e6810. 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/FIBAR1300532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb6cd6f2d6a3a931c4641feddbaad920274a3b176e8df0142d2daab191e99c8. 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/FIBAR1300533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x821cacabfdc136b4db70a0d61097c78397219f0396f4b14a4a1f7ad6e26bebe3. 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/FIBAR1300534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ef411811e332abc2ee42dac7cab94f3b668a7e817de2501d8c72265359742c. 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/FIBAR1300535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce409cc5b270ed609c19c3666da80e66b4e3d9bef177097d9f8c2a5fd6af103. 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/FIBAR1300536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e8cea88567ab0c08f6841ec72d677faaab1a6341f139a586d40ee27b93a70d. 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/FIBAR1300537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74951d247e5ce4b0edc5c058a5f3a2f59e75cb75aeff9580f0c3d7ad581936b7. 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/FIBAR1300538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c60518f47e1d668020694298f9954d85356e579aca85b36f855735a4badcf0. 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/FIBAR1300539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x202332cafc3ffcea80516d9a8a9f48e8e35cccecb88ee49e9865fd41d1afba44. 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/FIBAR1300540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca2c1cd33895a6e2880ce45cf84aa597d517b81bc3b6de3b34c6229f5065858. 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/FIBAR1300541.