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 0x8c9331717fc57d86bd2edbb1bba2caf4bee4803a3d94e4416aecc791e268935f. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6cbc2632-b724-47ae-90ae-707138b1ae17.json and https://artists.proofprofile.net/proofs/artist/6cbc2632-b724-47ae-90ae-707138b1ae17.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Kibo No Uta / "The Song of Hope" (Orchestral Rendition) [Shokugeki No Soma / Food Wars Soundtrack, Op. 1]
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 0xfbb1c727a6a8ee2bd9070d8cd71e7385f40b6d1c671d75cc41b7859e4782721c. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZHN72060634.
Imagination (Orchestral Rendition) [Haikyu!! Op. 1]
Departure! ("Hunter x Hunter 2011" Opening) [Orchestral Rendition]
Midwinter Sonata (3rd Movement): “Shounen Cantabile”
Midwinter Sonata (2nd Movement): “Finding Atlas”
Midwinter Sonata (1st Movement): “Train to Polaris”
Sa Kumukupas na Liwanag (In the Fading Light)
Everfall Sonata (2nd Movement): "Makini-kinita" / Foresee