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 0x0bd54fed45d4efb18bafc5843969f6fd2e7dad0f1d9879b54019cd7c2c45f2df. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e343a41f-72ba-4dd0-be21-608ffbcd6dfe.json and https://artists.proofprofile.net/proofs/artist/e343a41f-72ba-4dd0-be21-608ffbcd6dfe.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mustafa Kemal Atatürk & Güneşin Askerleri
Beyazıt'ta Zaman (Solo Piano Live Improvrisation)
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 0x5a7f10546495455586a908ee70804f0fdac9bb189951fa1dcfe6e8264497c622. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T10:56:06Z), 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/TR0010500533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd22ea20292374f2df22fd792486f56cd73d289f1f0e02bc69d3f5c2e02f2f94. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TR0010600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336180f2570f5a5989aea8d8fb996a46125ed640061d9174e0bcdad49a4125b5. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/TR0010600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x285c0dca8100f741f6900c16af9e47e60ea8b706921a12dc2d9c903a5c93c15c. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/TR0010600012.
Sonsuza Kadar İstanbul (Istanbul Forever)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6257241263be2f6a63203ebc387a637de8d2012411278f4646b22d27bc156e50. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/TR0011800109.