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 0xf005f440e61365cf764747649d2773bad52d5d7a12f9809e8210715d3137aa2e. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/46569395-f0fa-4a4c-8c3a-e6c62d4e512f.json and https://artists.proofprofile.net/proofs/artist/46569395-f0fa-4a4c-8c3a-e6c62d4e512f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Orig. SÜDTIROLER Spitzbuam - Mit Musik aus Südtirol
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 0x0e50fa9a92251afcc5b84117b7513cb9c3a343bc2a424cff9e5f0cb5dd7e1588. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/ATV111413003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fc8d92d469ac01f752c10f3bf20a8340ad7f7b3ade0f656ebca2d04b4fe05f0. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:43:01Z), 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/ATV111413005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00329abd40b696cf57775bbc992b4c38169c3c2459d75c0e4e60d84e1767d53d. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:20:09Z), 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/ATV111413007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09974ba3ef1dbc6c97dc512d60c9755dd535ffb27d94a70ef2e6fb461b305a77. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/ATV111413009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a03fd5f026da9bd93726e2e79ee09235296575f6bf0b68725c515e1c58c5dd. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:09:54Z), 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/ATV111413010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e5752f1085a53feeb02d4e425046abdeed4c8318868d57276873ad16c85e61. 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/ATV111413011.