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 0x6793643d4daccf4041364c49697694391fffa054c8671a7cd6e6fae00a1501ef. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ea58fe3b-ac96-4b08-8830-1f87e5b87cdf.json and https://artists.proofprofile.net/proofs/artist/ea58fe3b-ac96-4b08-8830-1f87e5b87cdf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mister Numz presents : Rapmedians raw & uncut
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 0x685ef188a68209e2d30e3178f2fc687d20fd7dd1d77494ec1555fc5c2a4a0b24. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZTB52258736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6277960877605d835a18e827c09f680cb171d4bead5fb3c7cfd3d1836efd79da. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:53:33Z), 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/QZES62363018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72eb8f8d67864c8e855be27984b71a0a2dcba5484a976f1fdde51030ba85ce47. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZMEN2346813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d9807628e6e09cb10949135f77db8fe8ea54b573abff06340af8af625669c2. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZTB32357168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d02406b96cdb2d382429f191669f6b3af46435b97797247ed9bb277ed30f18. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:05:42Z), 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/QZFZ72538650.