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 0xe5254f19a33bb0f11fd485cb520d1e020a2e57f627a6a64f4dc7e07e960a06b4. Chain 2 (Bitcoin): anchored in block 953812 (2026-06-15T17:06:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f67bb4dd-c5b8-492a-9911-1ff7ac697b12.json and https://artists.proofprofile.net/proofs/artist/f67bb4dd-c5b8-492a-9911-1ff7ac697b12.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Diana 1+1, Pt. 1 (Original Game Soundtrack)
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 0x11a45827bdb73c17c13badb5ea4c7f91901b727d2280c87182542f74ebc4baa2. 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/FR9Z62400305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd26d2ab6b1a8586cc50d2e99cad5fff4b1a127eb4a32cc143cbfe4160a68ba18. 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/UKZGC2308141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x291da905c7545d199aaf4253923a9d68b31117bed332516a3c0fff268b73f305. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM3DF2205971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dacf5c99b915e9884ca6d218570be7c87701aaa63e2b0d23718715747f067ec. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T15:32:27Z), 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/USANG2295784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3587ad734a0147be62153d22a61775318cb93225d1dbb5a2ae25673c790b6b59. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US3DF2259335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ec348cb1ae69606c9b5a8bf21941b424d7b3cc1f857570c9fd12fa2aabd754. 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/QM3DF2255119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd00d7dcc9b8c264c8fa587e1bc527708668fee6f53050df99102e9c3389bf33f. 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/QM3DF2202870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x291da905c7545d199aaf4253923a9d68b31117bed332516a3c0fff268b73f305. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM3DF2205971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf03e0f77e89d4a9f05eba2e6410131f7f1227325bbf12953f5bc59aa7c2b5f44. 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/US3DF2455798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54808f57b1f80298cbe14a7d782e9deb9cf0522976cd969f171c9f0e690f5692. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/US3DF2455817.