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 0x2b3491142ab291538890df8c147a4c9dd41cdf0132004b33da38b77a1de711f1. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f248355d-97f6-4bd2-a990-df614c261868.json and https://artists.proofprofile.net/proofs/artist/f248355d-97f6-4bd2-a990-df614c261868.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Wil jij het meisje zijn in mijn videoclip
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 0xb55b40f7f6b363e6617fb742758d4ea816bdf623eb11c1146d4197165ef54d82. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:28:10Z), 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/NLW2R1710142.
Sinterklaas komt van `t jaar in een luchtballon
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78aab61b6b1520aa1c664685462f3c535e17ba870c075ee6f6e2146cea68a550. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T17:34:46Z), 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/NLL872300052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34e9ad228353f75c501aaa6be1f05a49992d19d23e4b8a30f86b7507fb2e385. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/NLLB42400001.