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 0xcafcde2d0c7f60a6b27c7a19b0566db6614c77fefd88dcbc45391adbb1a9882d. 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/ed706dd9-5bdf-492d-8845-c24ede5d8400.json and https://artists.proofprofile.net/proofs/artist/ed706dd9-5bdf-492d-8845-c24ede5d8400.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Could You Spare Me A Day? (feat. Sibiwol)
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 0xea9e72f4d5a0b5fce55222d43296685eb959bd67a43361ac3801dabe4214f0e5. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:02:14Z), 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/KRMIM2003554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093fbc716f964f746778454e140c942ecdedc4ab0453c9e6f5dd6363678f35ed. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:20:18Z), 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/KRF632002146.
I just want to ask what are you doing (Feat. Choi In Gyeong)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb7ad14f2294a601a75ebc523bbda18faeca5df22fd51eedb342c03a3400889b. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/KRMIM2509043.