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 0x7eef4e058a244e1333390a730d55013c10952d700153a93b61be94a75ac03302. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/06edb3c1-70df-40ca-abba-02566ff3eff9.json and https://artists.proofprofile.net/proofs/artist/06edb3c1-70df-40ca-abba-02566ff3eff9.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 0x2294575e3ceffe8b17ef6bc99d7ff7625c0ab502ffb28d5425ab4f62b2753a8c. 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/KRA381801182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6813a0024215c145741f50fb18e726dcfb7e1886e06bb40bd1d785df4058dbf. Chain 2 (Bitcoin): anchored in block 956426 (2026-07-03T01:37:49Z), 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/KRF152200038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc7be87230cad49ee1a5c946cc6004bab6b3e2070595dc1583932adc5da6eb2. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/KRMIM2426904.
Drippin' Tear (feat. 박현진) - Sped Up Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a319d7f39a2c6c18fb5398fff6e2bcb0410854a914af237eb823c65ff9c328. 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/KRMIM2426905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aaece6d9dd08f85e09306c52cab8431a9fa646a57063f0b0d45d802ce867cb9. 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/QMDA62246206.
Breezy (ft. Park Hyeon Jin, Haechan) (prod. Sonni)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f9d3d4a2d2a8b47b5866cf31da78324b07f2d95afb2411ff4967c5e6e68b4d2. 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/KRF632102067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b51fd52c14657e32bbf8c4675a0ff7a3f7629d9d54a7d720ce9028d6ab679c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/KRA492100377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0823a375ad93543870a96cbd551ff54e6a9904c3b122a9dca719c774341da596. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM4TW2268327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd011884c05f510bf3a75ab5c596bab50b5c7f5598ead1cb0ec03ef4b2c9d94d6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/KRA492100405.
School Rapper4 - Team Battle:Textbook Rap Battle1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59332cbe315d8630a9df89966fc4c20c99d685612f696b6c157b0e72b9743941. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/KRA492100335.
GREEN LIGHT (Feat. Jay Park, pH-1) (Prod. WOOGIE)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8468b34eee5f48bb72f6408ff41d7834cfd8e874c8d7ade05e557e8cafa10906. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/KRA492100320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e8971a2dcc1d65bc7d72dd99dfd73b975ce19aed0b774e477ddc8ab2de0293b. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/QZTB42472881.
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
On the line (Feat. PARK HYEON JIN, JUTO, Shoi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf6e45199daefff022fb7b0a74d7a7fab9c0679638e13c749057ba4382b11f36. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/KRB472300710.