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 0x2758a620bba7059fd2117381a6c7b57a0e29fdfff31d8bcd17b0cb15d8dcebc1. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0332a922-2c4b-4040-9633-5039055d4e16.json and https://artists.proofprofile.net/proofs/artist/0332a922-2c4b-4040-9633-5039055d4e16.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
За Донбасс, за Аллею ангелов, за Одессу, за Россию, за победу
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 0x2eca9089a81f7d864994d1026975855d5fb0e3c16eb7168b592ed64f1a8dc635. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:52:18Z), 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/QZHZ62253133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca4b92210e4fbedcd102e143b42b440eb401e032fbf52cbe54b3d79bedda082. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZNJX2258512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f8a2221262c978df1482edacf30c0fcd868cc97cb7e6197e72703cb75f8ae4. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZNJX2258513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f319f7cbb6fd2b2a6284564609ae9077fac844f9b29dbdb6ae70e87ec96ac0. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZW9M2289002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc40eb097f2250426fedb76c511dd0001fb475c66c20f82e2decb812faf815157. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZGLS2534380.