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 0xf0d88d64137b5e84958303b8efd27017a4cb237ff87412a1557d158e15026787. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/81bfad4e-5b44-421c-bedc-e596c58c7b6b.json and https://artists.proofprofile.net/proofs/artist/81bfad4e-5b44-421c-bedc-e596c58c7b6b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x8b9d3f1d0ed90e7e53a0e454380a1f6550c190d6a53e21216769a13c75313523. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/TCJPO2139690.
Paradise on the Corpse + Ruined Kingdom Prelude
Eternal Prosperitas (feat. okogeeechann & QURELESS)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1d34951c6b58fa03b529994a05f4a26eb0c49b097b4ffa55f52c813c4cc661. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/TCJPV2326705.
Ruined Kingdom Prelude (feat. Tohsaka Yura)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc20eaf1b6fd5f2ab592e6b4f561aca319c46084bc42f94c7f3e325f67e2f64af. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/TCJPV2326710.
Oath Utopia (feat. Haramori Yoshina & QURELESS)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f5f009b33f0068e220dbfa147eef8749af8e1170ad2539acb3f475aaba1081. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/TCJPV2326719.
Thanatos the Usurpation (feat. Ohsera Ai & QURELESS)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf5a497c9789d9f428ff23bb2e269a909401b8b5ca222327d25689207a18a5ba. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/TCJPV2326733.
Villanes the Plot (feat. Nuno & QURELESS)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43297d39d2943aaaa224eb8da54cd96217ed73f149a89a7b5054a5b7ea03dae6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCJPV2326779.
Eudemonics on the Corpse (feat. Hatori Akira & QURELESS)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x587ce07465e80e2743146f7d17d1db413ee54a250bb639d169993e85191ef935. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/TCJPV2326786.
おぉ勇者よ！死んでしまうとは♡なっさけな～い！♡ (feat. 魔王チロルニア)
Oh Brave Man! It is shameful You died!! (feat. Devil King Chirorunia)
Bi-Bi-Bi! Be My Slave (feat. Necora Nyaru)
Gekien Ressyo Resonance (feat. Mendakochann, Yura Rikudou & Kou Mariya)
激炎×烈唱レゾナンス (feat. めんだこちゃん, 六道ユラ & Kou Mariya)
nihil sub sole novum. (feat. Ituki Igarashi)