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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bac0337fc5e9936ab488282ad3814548b28588ef1880f8179420ec447dc4288. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/93e89edb-edb0-47a7-a8c4-f90c05e268ce.json and https://artists.proofprofile.net/proofs/artist/93e89edb-edb0-47a7-a8c4-f90c05e268ce.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ano Hi no Mama no Bokura (From "Konosuba")
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50793ed6ed09873b7d2e32f75bb1a3bd49c458066168b4b20030105346de84cb. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/QZPJ32369878.
Delicious in Dungeon Opening Theme Collections
Tsubasa (From "Mushoku Tensei") [Orchestra Cover]
Flourish (From "Sakuna: Of Rice and Ruin")
Yuzurenai Negai (from "Magic Knight Rayearth") [Orchestra version]
It Will Fit Me Just As Well (From "Black Myth: Wukong") [Trailer version]
Commendation Ceremony - The Future Looks Bright (Final Fantasy VII Rebirth)
Dark Aria -Arise- (from "Solo Leveling")
Lumière (From "Clair Obscur: Expedition 33") [Orchestra Version]
Theme X The Way (From "Xenoblade Chronicles X")
Kokushibo Theme Demon Slayer infinity Castle