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 0xb1f86f20e0c0bbda61904db454858ce5a09a895aa405dd96fbc95e39c6251130. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/74402365-7b61-463b-ae01-0c1532485d9d.json and https://artists.proofprofile.net/proofs/artist/74402365-7b61-463b-ae01-0c1532485d9d.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 0x33604497156007d1e69940f895a1dc25167f21ff8925a14b9fdc63a17cda6b91. 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/GBARL1701382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92ea4b37862aa8e34420ea1e85c910dd0f4af89e2bd08d95f9765d52625a77c. 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/GBARL1701402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49062d4e20ceccd96ca609ee9a511761f2313193ec027dd67705998174b0054e. 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/GBARL1601031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d550d3e2071b787b55c8be3d6216a862d22f73b48b80c3c688d8c74d4ec88cf. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBARL1600730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5953a7c05422b1d55c1833c4cf9f7021f59d8001d310109b658e3308db40b79a. 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/GBARL1601035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d550d3e2071b787b55c8be3d6216a862d22f73b48b80c3c688d8c74d4ec88cf. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBARL1600730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcadbaabad93f84c4a9ca844a14c08434ecb5a0a977cd0938522f757f08dce094. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBARL1600390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb4b2d65c2b9fb1797771343e4a8826b98113effbab4aa5f4d0948587cf8a12f. 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/GBMKA1486425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89fb45946f57d69f82f162fc567ef87ab4153bb564d30631da58d2e637ae021f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBMKA1486430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe127d1f4efcc744d1717f6d45209d486c574030feded4b302b5c15c57f0660ff. 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/GBMKA1486376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89fb45946f57d69f82f162fc567ef87ab4153bb564d30631da58d2e637ae021f. 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/GBMKA1486430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165ae43c1d2062d1d0d5d30cd3d23939c437b744768ec4ac517cadb9a69e05e0. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/GBMKA1486431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe127d1f4efcc744d1717f6d45209d486c574030feded4b302b5c15c57f0660ff. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/GBMKA1486376.