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 0x348acfc88071b84b159102f4d7623a5e6a23325cd451b98ab5a19e313559df2d. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4c08a6e8-eb64-4949-a389-5abc5ccaafdb.json and https://artists.proofprofile.net/proofs/artist/4c08a6e8-eb64-4949-a389-5abc5ccaafdb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ballern Ballern Ballern - Party Auf Mallorca
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 0xe0e30b720052980b530e4efa27b60c5b1c8c0621e6778abcce80d993eb505077. 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/DEA622403351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e7c946502abd073ebe7a143d6947aab41906f7cd0193ed304c70c857d74d11. 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/DEA622401833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4160e759e31dfbc7e351e92927b2e992f1480f9f8e95d90be5ad07e760e002. 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/CH7812403199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20eff512c880af7d4a03c30034404ed35434cc4d346d481de093fa11140c69c2. 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/CH7812349171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5f68c35d8410491f7a2e8dceb9193cbec4eba4ba3df14bea9dd4ef87294da5b. 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/CH7812223595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd3c2e0164d3b9c705f36a4b2aede38bdb67120696a4a592ab56910e71157bf9. 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/CH7812105832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c16842d09bbdc0ac7b9ddb1ae261821f68cc3193aee590ec00c7fb478f71a8f. 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/CH7812100640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95844ec09816c6d4609dbc5bbf139d2ea52e98eb2b800e6b8fe5ff89192570ee. 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/QZP7F2107127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd29062fe1b17413e881877c710000633357c4f1ac3dc535fb506097571b83030. 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/CAWHO2019620.