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 0x8a80c634b403b8c3852dbd7d661e6e8b81552797b9978d10a873f7e3c6dd5e68. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e802362b-1458-4aaa-a04c-947815a2a4bf.json and https://artists.proofprofile.net/proofs/artist/e802362b-1458-4aaa-a04c-947815a2a4bf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bedore My Body Is Dry (From “Kill La Kill")
There Is a Reason (No Game No Life Zero)
Sayo-Nara (Glitch Mix) [Doki Doki Literature Club] [Cøde: ¥ggdra$sil Remix]
Sayo-Nara (Glitch Mix) [Doki Doki Literature Club] - Cøde: ¥ggdra$sil Remix
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 0xb2b313b28474f848a3670c8d7f218c321fe06908f679029d05a41c7cc0e6aab0. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZRP52112630.
Sayo-Nara (Doki Doki Literature Club!) [New]