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 0x3d89b5dfe119f5ed0781ee25e7bedbfa69850ca731693af466619f1b4af5c5a0. 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/debbb54a-bdb6-4452-a44f-a95347fdd542.json and https://artists.proofprofile.net/proofs/artist/debbb54a-bdb6-4452-a44f-a95347fdd542.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 0x049eddc2a33b7315086b46f7e837491f84441fd9cef30445bbf24847ba945f36. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:01:14Z), 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/QZMEM2159120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc9048b89a7dce0447c0f5b1559c90c23edc57a73022860adf25aa113a9b0c95. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:24:48Z), 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/QZMEM2159121.
Re: Gundam The Witch of Mercury (Witch of Mercury)
Re: Gundam The Witch of Mercury (Lfrith)
Re: Gundam The Witch of Mercury (GUNDAM)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a207e41105ec9af14bd83c0f9f3d5f44b88d8121ca454b83b32d8158e43f70. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QZFZ22308852.
Re: Lycoris Recoil (Counterattack Start!)
Re: The Eminence in the Shadow (The Stylish bandit Slayer)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb63331390012ce408a661fa6c9da8388c893526fa0f71666e3656ce1728cabdc. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QZES72338628.
Re: Gundam The Witch of Mercury II (The Witch of Earth)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb757ae9f87dcd1ec240a16e832599ba894e337b687954df9a72622a2ff6862f3. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZK6H2350691.
Re: Gundam The Witch of Mercury II (CALIBARN)
Re: The Eminence in the Shadow II (Recovery Atomic)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0259382af38a905c61548d8af2f5d5a8e426c370042da08e124558b34bb17837. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZWFE2337865.
Re: Frieren beyond Journey's End (Frieren vs Frieren)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x442317dab8ea7e8b019a22339888dadf422d0583058a198f3763e1dbc1ccf7f8. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZHN42462793.