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 0x796caac29730a61449622c020f7545587b4f6e944b4393aac98d1d7972edd561. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b50fbe4b-be15-4cb6-8672-31e6d52bb534.json and https://artists.proofprofile.net/proofs/artist/b50fbe4b-be15-4cb6-8672-31e6d52bb534.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tri boje zvuka (Live at RTS Studio 8, 2016)
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 0x58ac56398361b14685029b8adc914115bb178b37068450690246e74f557f701c. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:43:13Z), 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/NOAPI1693930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0205dd7097489813b63d49f5f9e445d6a2951a463b5235eba9187ad3ff44442c. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/NOAPI1891284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db537b3541dcb020465ba297189d1bd6c04f120f533e8b3f50ae0b69ccf1460. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:12:02Z), 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/NOAPI1891285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22864973ea2c990f20ea0aedfc2a3f5f2018bfa895ac440482d89e1f533a1d57. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/NOAPI1891288.
The Final Adventure of Kaktus Kid (Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db2cb1a39ac11a878b0ab2ea8c7b2dcb9e81e34221b07f338ba2076e966dea7. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QMBZ92177642.