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 0x168243288ea5716c01918254c66ca4c797733da4b81185f7a05b1318ddf09338. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fec0c367-92a0-40f2-ae84-d623f60dacc0.json and https://artists.proofprofile.net/proofs/artist/fec0c367-92a0-40f2-ae84-d623f60dacc0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Men Bara Om Min Älskade Väntar – Tomorrow is a Long Time
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 0x87816c4ad97b0add898bee104eeedc811582f7554d7c2f8d23f6a0360916bc90. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:51:18Z), 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/SE5DK1800507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2faad961de18432e33f6269bf3ce6bc745a932194c918f1d3d24f7a3212ea6. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/SE5DK2300206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6576c7890b0aee2ebf6e229e510df4c12e3f9d3199a1ef719862319ba932968. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:34:55Z), 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/SE5DK2400101.