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 0x1636eabd552b319e728cd8a7741f2c3a4a37c9a1a43c57b7cd805c5f0211f961. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4561c66a-4672-4036-9602-cf95f6b98e3a.json and https://artists.proofprofile.net/proofs/artist/4561c66a-4672-4036-9602-cf95f6b98e3a.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0448327d0be3402ece78019f68eaf6d3cbb7fc5e39faa1c056e19cef483c543. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/TCAHZ2430180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3171ffd56b5d3519036fc94eaa675bb138e80ac4f4ec2a856be859500ee7098f. 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/TCAHZ2439881.
Demon Slayer [The Hashira Training Collection]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61c4182e5f114e63908a9e4e99363e2d9430daa1424f7d38649c922c96954fb. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:42:41Z), 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/TCAIP2403687.
Kazoe Uta (Ubuyashiki's Daugthers Lullaby)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5dda5f03928ed79d8e6ff8c32090db776acc44583810ac59f56a503901f2f6f. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/TCAIP2403699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84e0ee0a347bedcffebc3aafb46cf70c5469f7c60b69ed0ae5500ae1d89409fc. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TCAIP2403703.
Demon Slayer (The Hashira Training Collection)
Enemy - Epic Version (from "Arcane") [Cover]
Goodbye - Epic Version (from "Arcane") [Cover]
To Ashes and Blood - Epic Version (from "Arcane") - [Cover]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da31612fe5fc963d9b1c9d84d3909190e7b13127a27587070da842c43ef2591. 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/QZYD92405155.
Isha’s Song - Epic Version (from "Arcane") - [Cover]
Reawaker - Epic Version (Solo Leveling Season 2) [Cover]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac52e865dea8b1d99fc5661d0750d6e94363cdc5a61697b945153fbf99c0751e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZYD92505895.
Superman Theme - Epic Trailer Version (Cover)
What Could Have Been - Epic Version (from "Arcane") [Cover]
Guns for Hire - Epic Version (from "Arcane") [Cover]