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 0x81b2ff6d21b1bd40d0885322a171d7cd58abce2038a1bb1d6bf1be84445bc223. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9df1ec8f-309d-4607-8126-589e0b63ef8e.json and https://artists.proofprofile.net/proofs/artist/9df1ec8f-309d-4607-8126-589e0b63ef8e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Widow Remix (feat. NSW Yoon, heroincity, CIKA, Hollow Young)
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 0x6ebd731e2653a914e1918f569eca0c3ea39a357ea6eb296c1ed74483516efff5. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/KRA252201762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x771791291fddf6aebbe3d6592ad71bab3c5fc388d78d10c64516845366e2597f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/KRMIM2242384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b19ba680f711de2f96ef44549d9afdb1313b834d34a3c625b272a455b9160c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/KRMIM2242385.
Secret Love (feat. Hollow Young, heroincity)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce73a7a032469141094a70c27b361b0a4aa7da09cccd92b891e738f922b12ca2. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/KRMIM2242386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b2e9ab10484086a2c68a540d5dcb28ef697cf91bed7f46869403d3edac3dda. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/KRMIM2242387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa62f978591bef9bb236ab1b2ca85f4cb8740a5b3c6b63158a20055786b001075. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/KRMM02304943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e380778857ab271c2dbec91c973928bc61d890b8fd2b62b614e77cbe1e0592. 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/KRMIM2178159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1949e89306bf6ef5f4b0e12155c7957e4eca01e79564a7b2f54585d9da6b8456. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZF452001582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79fbdb4f08df473ff5f45141b50f2f6b2b3f1b21357f4188f47842a6dc7a5a11. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USL4Q1943278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a2bd946ec87f0cdb39a4a3158f561e06236b741397833f0a9316949b334606. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USHM91950380.