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 0x786cd21c67bb6771b7a7dcf51d75ba276fbe9bf7c4bb38c9182f1de1df320e5c. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f10a69ec-0ffe-465e-9b10-580666cf2b02.json and https://artists.proofprofile.net/proofs/artist/f10a69ec-0ffe-465e-9b10-580666cf2b02.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Lost Woods Theme (From "Legend of Zelda: Ocarina of Time")
Nintendo for Guitar (Original Game Soundtrack)
Game Themes for Guitar (Original Game Soundtrack)
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 0x53067f02f6effd8c05df578a23495ae0141b3131072708c3685e8de0e0ae4330. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZDA42004127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57b6adec58777661d115788fbd4fcfd68c68819191859fc31e21aa15bb19fcf9. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/QZDA42004128.
Dirt Theme (Heroes of Might and Magic IV)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74678007dac6dd0b2d468c1a73cd3bec41c87b9377246500a7645d8ad2e01e1f. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:23:46Z), 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/QZDA42004131.
Order Town Theme (Heroes of Might and Magic IV)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dccad23c414c0d578a9045f91969a17364841ab5edc1ae8a138265cffd54f51. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:47:11Z), 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/QZDA42004132.
Snow Theme (Heroes of Might and Magic III)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46cbeb182e07b4cdc70c9a3b79a463bc90b2d2279826194b454f029be19ee3c3. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZDA42004142.
Game Themes for Guitar 2 (Original Game Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdbb1ebbf1bccd94ec167b27b2cf0bc65da284704d4e222342386b8aafabaa4f. 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/QZPJ32219814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf265786bd218a4ddd14791fa2b92035b43f640fa122cb6437eb6b2379ff32d2c. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T11:07:04Z), 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/QZPJ32237647.
Game Themes for Guitar 3 (Original Game Soundtrack)
Test Drive (From “How To Train Your Dragon”)