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 0xd04a9224420d71a473242ddc72690b838d40c1166fbb613028b512d14958fc94. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dee8753c-8d1e-4c8e-a045-0a81d0c60464.json and https://artists.proofprofile.net/proofs/artist/dee8753c-8d1e-4c8e-a045-0a81d0c60464.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 0x59ca26b835e5c6a5fe9b8cbe3da1ac884a182b580f4bd3d7ff9e113eee15158e. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:39:00Z), 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/TCAFN2160459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e71ab6d50c18962c1f787422daf74b97e5d5e7df75e79e7a3207a3b549d5ca. 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/TCAFN2168275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0acf207afd89af0143136447fe9dc899c454c71abf2032c300b5fb64ec87f043. 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/TCAFN2168320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb72cdf2062f82a45f58f9eb4695b9516ccac6c48190fd3e4ca5e4461fbce479e. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:28:20Z), 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/TCAFN2168412.
Knockout City: Alien Invaders (Original Soundtrack)
Knockout City: Greatest Hits (Original Soundtrack)
Knockout City: City of Tomorrow (Original Soundtrack)
Knockout City: Mutant Mutiny! (Original Soundtrack)
Knockout City: High Society Heist (Original Soundtrack)
Knockout City: Legend of Gearbeard (Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d2f9914cdb14e03b729e833e13adfae7c6ec8f7738ebf2fa23d23a088fe4ba8. 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/QZTB82488110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55d06339e0e175a4d75f3c4e765d0b25bcce8e96270ea12086f32d247e762c21. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T15:41:31Z), 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/QZTB82488113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a3085e3c96755732d544c9ca3a039a76d8ef1e8dfc0bdfc1002c4ed03b7898. 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/QZZ7S2421332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x772ca171dc7a270ac45a9a887863f31a92f95997cbfb8843cb2a218e3b43dc7d. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:04:49Z), 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/QZZ7S2421333.