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 0x71948f3a331cd621f9992845dbc55533d2413dd08771d2ab5f25743d3a87ea05. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4edfaf26-c008-4667-8f06-08af7d3cbc1b.json and https://artists.proofprofile.net/proofs/artist/4edfaf26-c008-4667-8f06-08af7d3cbc1b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Annoying Orange vs OJ Simpson. rap battle.
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 0x2ad698d9769cfe872730235b3b94bea39c26244f412344a24f6d5fc26d368909. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZWFQ2390519.
Pomni vs Preston's Hourglass. bonus battle.
Guy Fawkes vs The Joker. rap battle. by fightmarker.
Jontron vs Scott The Woz vs AVGN. rap battle
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69e64cb9097e49d6746409a440b271879c9140b3cfa48606c8067b520d9a899. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZNWT2313722.
Babadook vs Ellen Degeneres. rap battle.
Nigahiga vs Ray William Johnson. rap battle.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab6ac00c6e0e0a85cbd67a8dfc138d49acfa91be0167d7579e3ae697d741a751. 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/QZK6H2365353.
Harry Houdini vs Zach King. rap battle. by fightmarker.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f6bc1d74219e1c2d246a504d6bc0d3b789798a5b37548e7779e98ea4a909bef. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZTAW2229760.
Majin Sonic vs Who Are You Running From. rap battle.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31415d6e1e797113b0e818426be511bef6fbe0249ee225d8c6be44607edc675f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZNWU2289846.
My Bloody Valentine vs The Leprechaun. rap battle. by fightmarker.
Dead Meat vs Nostalgia Critic. rap battle. by fightmarker.
Sonic.EXE vs Red (NES Godzilla). rap battle.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x733c6dec37910ade2f56919f36050d042b9f37a6d5404bb11ae99e1b51bd67c7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZNWY2119959.
Corpse Husband vs Chills. rap battle. by fightmarker.
Ghostface vs The Zodiac Killer. rap battle. by fightmarker.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d3043ed7249e3a49cdb02b6c16696e7ee7f067264022547f002187ee40e4834. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZK6Q2173207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e6f28d3194f9ddc7415f28d8ec439de06ae5420152a1a80dba5f9b0408e3ed1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZNWR2186383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d7310c84617b9057320527e05618e2592a7df74c5f83e8ad4cd8bf4475828f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZMEQ2242702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0f1d93cdda6e1def2b11862a4f3054975ac475d1d9250917c7c41da0056623. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZK6P2404559.