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 0xc1c22b0e96040c864d623010c0960008403c2ff41f96073f66a2699e60b113dc. 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/eecb4af3-a8fa-40e0-8508-3548fb74c01d.json and https://artists.proofprofile.net/proofs/artist/eecb4af3-a8fa-40e0-8508-3548fb74c01d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ekato Fores Kommatia (Live sto Christmas Theater)
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 0xdb2a1bb83b0a4bae3bd7006be5ac0ccc5cc650794702203eb1d2052e4a9fbf71. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/GRPA12400593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb969aa40f8c6ba1dbbb2ce6dc8eb1475b7508860a65d1b3515c8c95d1ef8745a. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:08:20Z), 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/GRPA12400594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b0248e5077285720cc9cdd71eb0a932854d930e5d0d0dabd5826a8e4d308d9. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/GRPA12400595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x547f8bf39f019d88ce11c03fd261b1790f0ee2ab0df2d2bfbd0e5dec368c698e. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GRPA12400579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d6fff9928c3b03009f169fc756002919c3d779e669c1daf7c58b5d7631726c1. 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/GRPA12400603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64710a709814ec5892af8512536ed57908d4ea758fefd39c04700c0442e8795e. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:28:07Z), 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/GRPA12400605.