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 0xbbe3d909df8b257a5abda1c9d8a0c7797294e1f0421c5f7e1cb2ae22ca7a3fb2. 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/4f0fa222-d516-4648-bafc-40a585e62116.json and https://artists.proofprofile.net/proofs/artist/4f0fa222-d516-4648-bafc-40a585e62116.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 0x9eda5344d88b287148b713fb706b7d62a1db8aec2614bcd6f246b639ea466074. 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/KRA392200025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f9cfb60f91b19ebc3ddda25de69bf9c180155d6e284125c2a5b1e3ffdea4b5. 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/KRA392200026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00586b6cc296182026effbe0cca966e272041d5285a7cb1840613c30b0073cc4. 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/KRA392200027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x312058ae380190adabcc5a21bd4c9948c0820950132ec24bfe4c41d42130eab7. 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/KRA392200028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf17983a0e31c38e1d8a3a9cd2fca3e6143d4f378dd30a52cd547b01e1e93a32a. 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/KRA392200029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8055471f40a646241cdc0000a07eaf1769492f1abb7f56bfb3f506da4558293c. 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/KRA392200030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb430514d4d45a335d5447b2b0346014df3dd41f05c46996e1d2caf862cc62820. 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/KRA392200031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f780985a8b7479e3eb293445b563dd9a69671d3219959bb42deae03bedf9aca. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/KRA392200032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a09d4ddc21e3c35196da1bc9bd9d2f485ff2c64d3cf5fb7e3f0202f599e7975. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/KRA392200033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f7365e7cb4c8137923d7f4509be07cb495e49fd5880322035b155ad183ac2e9. 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/KRA392200034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf76d305023dec945b7e4cbea4d4fc6114c1bf35dbe243b60e792b73a38d892e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/KRA392200035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d31ec365a92aacae7fa4362e0b88f062af4be79cced1c58c89089861d41a1d. 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/KRA392200036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd52ce30d7d15973a0b0d206b8c3136d9c6d20b2d0470a72ff669692b16a855d9. 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/KRA391800067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x192446407fc7f261f5e8efd896e39cc995bd841d5156ad6aa77a3448ba300544. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/KRA391800068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554cce433a69862b48e777577d33ef8864786be0fd8ebbe32e06e9b3a7697745. 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/KRA391800069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb0ac0260e5fcb1a23e39832f413ab63bdb07503a3bb752b567a6f4589e46f6. 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/KRA391800070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcfd9281cc727c5a87b2ff8e5b2b9e390b7c8c764aecee75145c0a770dd230aa. 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/KRA391800071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0c8b4e3fade62ea42cb3a85d85f9dcce914a684c4183e9e7cce10877027e7f. 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/KRA391800072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29ef4006476d2d40374a82ff5dcce67edf14732d680032df23683e4e03f0865f. 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/KRA391800073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d620330f16de7b457baba90b99760306262827a3ba56d2e2f9a6e61840ee12. 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/KRA391800074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x892db335cf27f4a3c6211f84498eb26488fce1e4122817d56318ec0f909808fe. 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/KRA391700037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c3cb002253c1b6766e56686c9252ecd0e855fea8602dcb7ff0add2f397a874. 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/KRA391800075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c76f006b2fbfa4e3b92af864901064006eff5a4087cf4985ae453a82267cc4b. 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/KRA391800076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94572ed5ec5099fe60a91f029b1babe45c2089a5b6360b4f6f1ab36738f5ac91. 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/KRA392100034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x892db335cf27f4a3c6211f84498eb26488fce1e4122817d56318ec0f909808fe. 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/KRA391700037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a531f17ff470ab1d481c95627d447e47daf4299a70d0728bb939f98d6f40c7. 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/KRA391700038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ef602368bd5f411ca58348aa51c2e5a71d60518c29d4ff4ffa3e820abcfdb62. 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/KRNAR1500439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee762a8a2991e6746d2a39f381c7b3e886f164ddf070245d72fb01aeeefc244d. 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/KRA391800033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfda66f53351fbd9bd5bef8f40eca996e4ab81de62adaaca6935320334619b087. 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/KRA391800037.
Incorrect Answer (Feat. LEE MINHYUK of BTOB)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a8d9699f12ad4b0b63143472c7630292829bb51c625a8f41d0cd7fa680f3fea. 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/KRA381802371.