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 0x3115b74afbf1a05403c45f8d4f032411fd3bdece41e901203d3d4937e650d2d5. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9919c27f-3426-4033-89f3-2fad7c81a67f.json and https://artists.proofprofile.net/proofs/artist/9919c27f-3426-4033-89f3-2fad7c81a67f.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 0x527621a5c8449bbea3495114cdcd99535cf96f4bca919f7d7a4bc5b0fe26e080. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/KRA381000956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d7ab44b676547b2c9947415d083cfa476763b3375b61ae8c15102be711f1582. 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/KRA381002021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa025d8cd6d028df0dcb88b9f8784f341b8efb5ff92909781daad5a7982e951b7. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/KRA381602472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1827ef74bd83218add8b219697b7ee648191d37aa2e3acb02b8f1d73f3bf9b18. 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/KRA382163901.
HAHA 'THE KIND' DONGHOON (Violin by Danny Koo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2071558966af275a81407df3c9573b72a99c09dc1480146d21900a69e0c5ba5. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/KRA382504238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50fc3224097056463b5a0a14175cd2d0fd4257cb4f1334fe62d5bd1361be58e1. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/KRA382504239.
DAG-DAK (Feat. YoungJun of Brown Eyed Soul, Shim of SRG)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e4a9318b32b99b8bab5e77227487dc4f5e461a9abaaf37feed750609a9a374. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/KRA382504240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7c5b9841ea7ebe2347c09cb49a9c5d8b0e2d457a45eb2c4cdfaec28e050c9ca. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/KRA382504241.