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 0x8e6a95487fb85d641e770338be431399fd4046378116292ec53337206ebf64df. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4bbde2b4-8786-4d6d-9ab6-24602427f63f.json and https://artists.proofprofile.net/proofs/artist/4bbde2b4-8786-4d6d-9ab6-24602427f63f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Shock [From "Shingeki no Kyojin: The Final Season"]
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 0xd53a5f2b0ee3c28b70c0a51ac0f2634cf11616337077bffb031bc2e1c57a58f0. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/QZPLR2045888.
My War (From "Attack On titan: The Final Season") [Boku no Sensou]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b5365ae21815e13996bbc15231e9754276e83a0a512bf3cf9e581a23cab0a90. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:21:44Z), 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/QZPLR2067104.
Kaikai kitan (廻廻奇譚) [From "Jujustsu Kaisen"]
Black Rover (Black Clover Cover Español Latino)
Kaibutsu (From "Beastars Season 2") [feat. Miree]
My War (From "Shingeki no Kyojin: The Final Season")
Grandeur (Black Clover Cover Español Latino)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e5a007d00212b46f34c68ce32cc6f590dd1ffa20e43140565a786882aaf4d6. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:00:19Z), 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/QZMEN2186031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c0568e05df8d048590b4fec56496414b6df41e466a5971521969513dd62466. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZMEP2164438.
Like Flames (That Day I Reincarnated as a Slime)
Cinderella (Komi San) [Komi Can't Communicate]
The Rumbling Cover en Español (Attack on Titan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fc58ee985e63abcc22a468154ace724fa38f1d6b1caf110f669947adea255ab. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZDA62212829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x998dd14dd0365ea3a878ee5368ec3185efa36f6a4dacdecc53d10b0e3a7785e2. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZNWW2330235.