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 0xc1a9505d8e82f90e1d3fc406bd5ab0472b27d90fe7f2f65ab630033b2251adb9. Chain 2 (Bitcoin): anchored in block 954742 (2026-06-21T20:46:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fd62e49b-4ad8-4ac2-9a4e-908e6913dc39.json and https://artists.proofprofile.net/proofs/artist/fd62e49b-4ad8-4ac2-9a4e-908e6913dc39.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Saria's Song (From "The Legend of Zelda: Ocarina of 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 0x6f1a1b060e19633940f6f64d6262f224e5898fb7076eb4a27726ab22fcbf9ef2. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZFYZ2193620.
Song of Storms (From "The Legend of Zelda: Ocarina of TIme")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd469465e7af5b1485871b06e0d704375f626d855cc1357270db8f35a4ab9c176. 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/QZFYZ2193621.
Zelda's Lullaby (From "The Legend of Zelda: Ocarina of TIme")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebca0a42968a1407a26bc59159c80c79adda5be5cf06f7d0b9efeac485419849. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZFYZ2193622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3602ed2dff7da4dff82b31fe292bdf09d0821c656b203cff975da8ec684c82. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QZRP42282719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a53af91a35ae620e4edb518823c9d36f884ba521b4cc24740d5e9cdf39442b0. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/QZSYP2337376.