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 0xbc5635f48f6cf8d61119e00fd5df90a80f43a0deb521c5892a75bfdfad894bdb. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a906d8c6-7aed-42bf-bde2-c62c3eefd182.json and https://artists.proofprofile.net/proofs/artist/a906d8c6-7aed-42bf-bde2-c62c3eefd182.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 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 0x13958f0a8a4fab91ae1e635e167bf789718f1699462f1b9453e63f18df14b2ca. 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/QGNCB2309687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ed805e96b0f4a6a94bdecddcae7bb6196dc93249eec902892c5a802f96214b. 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/KSA012157557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fda4520cb966a18bff378d3bc8ddf54ad0729a0f93fc93f2e11b855c66ce816. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/KRMIM2027522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd745106ccd21471d2395af810b7701a12845507f72698065b129cd19ba8a304. 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/KRMIM2019440.
Next Mission (feat. Chaboom, ODEE & Chaboom) - Dope Remix Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4551ea2f2fb6864971a2ba001a4f4f720ecb996decbd2da0f1742c71ff3a00b5. 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/QZF452001636.
Never Better (feat. P-Type, Jambino, DON MALIK, JUSTHIS & P-Type)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29dd3b9bc1dabd3eaa4b2a2bf31d4a04fa42f9f2c54f6a09471b5da54f8d568b. 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/QZF452001637.
S-Mode (feat. Yumdda, Ja Mezz, ZENE THE ZILLA & ZENE THE ZILLA)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x872eef6c3b1c8fc5522fc2cda1697e250b8712dacd23b83f48667e9dc420d06c. 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/QZF452001645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c9f7b44e83a8d7542e06b5caf25a62b348f9b1f1aeccd05886dade7d59d29f. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/QZF452001646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb15fedd20480f68b3929834b246f1ee3a034a8453a8b29cbfdf4c75aa23266. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/KSA002300293.
I'll live for you (Feat. kim jun beom, Quinsha)