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 0xc8d26ff8421311867e578771b02c682f68a19407e67eb706003e769624a57f80. Chain 2 (Bitcoin): anchored in block 953777 (2026-06-15T11:52:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d1a00e1c-a485-490f-abc4-b4f9b656748f.json and https://artists.proofprofile.net/proofs/artist/d1a00e1c-a485-490f-abc4-b4f9b656748f.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 0x22be4134d7b36bace594e18b954f7e7736c6da42fa47da9e38cb9396bf951063. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/QM7282319560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1aeebe74154406f7153d17a053607130be584cc05c64eea4dbcd130e3ff0777. 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/QM7282319561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80b9532c47f22464cea74a5f6bf1208dbb9a5f752fae9f6f5be2453d6a35894. 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/QM7282319562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3aecfff2e9fc549bc8bbceb4448de960227d92adeb750e0a177d3c33b635dad. 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/QMBZ92253297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a76a892bd79a10ffb6902e2055ec7a1f16cf0fb131189b5d006f1d66c9b1a84. 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/QMBZ92253298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6746561d6d04a187f85a21bd13c787da3a0cec9b62ceab22513be3dbc93ad54. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QMBZ92253299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd49a40f3551a401102f55547fac6048fa213c21c4300bdc2dfe303e7ebb737. 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/QMBZ92253303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40169d0ece4063cecbf1bc30e21cc044429ae45a3852a68bffda38100466da96. 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/QM6MZ2408993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a395ecf34ea2230bcf7e9ae80f3ad2790f1855944bb925e0373adc1855eac7. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/KRB922400079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd89ed9c397925921b64c5e0715bbbbe554d5f0bae667cfc0de6cc09ae1f4891. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/QMDA72354583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f4f91c851161df11709774a59a2e73463d6e581712595d226780cf168370489. 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/KRA252201632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcedbe4f0820387f1fd1bd4938fb303271bb9e6199af8b47a9f669abe5441f62. 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/KRMIM2467397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0724d67883cc3cd3167e9104193ee7b0e63cef97b7658ac576436ba3402ea64. 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/KRMIM2467398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b713d990b7727c9f6a80895420ddca35174500c8a203718f105d9af9cbeccb. 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/KRMIM2030257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a94c5de3fed729e99783c28789b9c56cdd9d2b474d184b403c20bda9a3437c2. 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/KRMIM2030258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57cbb32da7337dd5c83153abacd81a339ecebfe744048226a986c81863e1ccc5. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/KRMIM2030259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x537fd2d81da7728d4aeaa23661aab0d4fc2a0754782ae24e106af2a4526d163d. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/KSA012142705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671af278f4a601157f76952d8b42488e913851eb295b48aae7bcd66ba6002f77. 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/KSA012142707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24110e73bef779b743b138e8f45e3e169ab10c79115f083c395a48c8e97fbc86. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/KSA012142711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1292948e5b1095dca8f9c99567f8fee52f45aebb05453b567e91ae7bef07930f. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/KSA012142713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f3fe1c19e722609584067d769dd3e82e6cec16916b3fe5fda6c2ad24899899. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/KSA002202088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5abc1c5328565420c12cb8db6deaa7fc6c11eddd5c1d0003dd27411a88a43f38. 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/KSA002202092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7cffdcca1db8d16ae131a876f99a106f9a77e056f75f0167b6b2336ec7ead9a. 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/KRMIM2234055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12af9f61b6406f76cb2009f500c866441987ffba8ed1c22ef8278f77f73690af. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/KSA012177929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8cee833e69b7be7d9a511b013554e35e096977c467037b630e5bc60e4a9545e. 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/KRA252200266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23e0ff0787a1ddd6e148956d70657ff7d90611b1299aa771ec62d53598ec9c1a. 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/KRA252200268.
Fall in love (feat. Laurel, Lee Bumseo & EUNSAN)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ed681f67e8ce85e4a82eac342e23b83f20b3a498253f7df6fc5899f3f4c6bf. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/KRA252001102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9537a60e93ba8e5efcfe21b0676e2d564b48db68947f2c95a0aa7e2aed810474. 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/KRA252301277.