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 0xe6d031ae7331b8376986dfd4a0251c84c2a610d6cb338216ef3e151cfc89b3b9. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/be396562-9494-4ba1-aedc-770ddecf9320.json and https://artists.proofprofile.net/proofs/artist/be396562-9494-4ba1-aedc-770ddecf9320.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 0x99aeaa23df2e6b182b30e71b4d209b8a288938fd036095bfdb74606c0a71ea30. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/KRMIM2021130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a9f1760ac1c4bed0649dd88fa96f354a59c637d664d72567ec54052b79a34a8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/KRMIM2021131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8331748659ee810126dd8382aa5647f0fb11b7d15287ae34f348c2f31ed495. 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/KRMIM2021132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c92b1bbb3b8a2ea80f6dca4d6a5bcd2f59acf4378870a194082b38ba7c372b4. 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/KRMIM2021134.
A CHANGE IN SEOUL (feat. Mckdaddy, KOR KASH, Lil 9ap, TOMMY YANG & Jeremy Que$t)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x761cb6e6c4272f3d9a44e6fe5f4e2d053cce8a5ea9c886abf22517e0e36cf1e1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/KRMIM2021139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3428e587b306bf5fb5e1fcab48e066e5a5aa00565169554e9fb30a25ee4ee4ea. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/KRF632500205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcfc4f441e1b4991810d768d837d194b791c478a008a465ae86b9dbc99d5320d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/KRNAR2211070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e5dee610d561a2bf3c554dc50d3465c70a9a64f01456189a45181cf559ed097. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/KRMIM2207038.
In The Wild (Feat. YDP CK) (Prod. Songwaygoya)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ac70b11b62b67e5ae642c951632f022548b905c3f973be696681de99629127b. 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/QZEKE2000581.
Croquis (Feat. 호미들, 정하연, norovein) (Prod. Ourealgoat)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d713b3e036d6c473ada4ca281cae61db1314f696849ed6895d87972aac4fd0f. 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/KRZ292068394.