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 0x9914ca88cffef0ecd7c25b01ea7c23b6520038711c0c67257eb6f6f9300d9a19. Chain 2 (Bitcoin): anchored in block 953765 (2026-06-15T08:55:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/be22f68e-86cd-4c2a-9001-23d50d3c0324.json and https://artists.proofprofile.net/proofs/artist/be22f68e-86cd-4c2a-9001-23d50d3c0324.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 0x836d84e0da4d81fe7f7964b35ca13ba299d05ee1c338ab11fce1f34228853aa6. 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/KRNAR1604172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe775ef38dd4bb13380bbf927e17e8a59c56d2422776c1a77ec9e53212133121. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/KRNAR1604173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb4083c0b6dc8d02451bc8fd1c1e2f0fc9d085ad8ed592f5001befc15d5b3e2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/KRNAR1604174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d8d509f9d954cc97f8fd57745a61da8beef335b62188b55fe4c33328e887d8e. 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/KRNAR1604175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeac9a2eec0fe3be12dfffefdba6590e1b7c6d4e48bcd5c63941bce3165004ebf. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/KRNAR1604176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a6fbfd61191d506d7a460ffb609441a8fcae5da5bfc6c1864ba11d844b5f42. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/KRNAR1604177.
Love Is Understanding (feat. Lim Jeong Hee)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e2b6ebfe8bafe490b7f13c3ae6b490413fe6c3309efa7d3663d70472aec321e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/KRNAR1604178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x354c65e3f5477a30d28b73d814534e07b65d0352f7a91d1ebfe51686d7abf884. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/KRNAR1604179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf575e9fcb17a9e2e8578b63d0b9d30a5ddcd3bdcf98ee847331d1fafe37336f. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/KRNAR1604180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeac30bcc54d870467853e1744fec77499a82121e4d2764961f9a2576be0a7c0. 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/KRNAR1604181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099deec0900ae2808458f0647064a3959a3c6052b151d67a2fdd6072d7bcae97. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/KRNAR1604182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a19c12b45e7a56c8ec7f448e0f2fbc9a6ed49f422957e14423f0daabb04ba21. 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/KRNAR1604183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba43b7bb2a0d33af5d1fab7662bac2eadf1e2ae5561ae9a8f34b740583a46d8. 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/KRNAR1604185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f94c0bde0846bdea14f4c628c1ea45c6fe7b86a22805b29f292ce95c1435f2. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/KRA341503970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc884ef2353c27ee6803ff098c5bd0ff8bec36a24b73235cac88ed1d022fa34e2. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/KRA341503832.