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 0x849cab5b0ae389a038e8962dbfa87977c6d81beb9cd87a6d9cce4dbdae037b35. 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/00fa0ae3-9eaa-46c1-a16b-2b6ff76f71ac.json and https://artists.proofprofile.net/proofs/artist/00fa0ae3-9eaa-46c1-a16b-2b6ff76f71ac.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 0x2279bddbf80f5ff011b4fb4c5a91cc8281715a92dcc53e0917c1e1a3d9e2c965. 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/KRA382321318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5bcf7ab07debdf8ba8611e7e66d5c95468f37a24115a52be4b3a5a9741ee4f6. 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/KRA382322313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8656f9755b7cce8da2f2a69bfcceb23a1e7245eb82b6c00dd5779db766b4ae4. 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/KRA382322325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160c6bb692a615ee5a291340ccad59467003eb0ae61f8914e8def8ac8c00d6da. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/KRA382321413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed83d57ba55d2448d95152535634069cfe0fde7c53bde662a55fdb11c6626188. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/KRA382322311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ba030cbb1c3cb730d3374a08b58bab4016d0a2674482830f3c9ca3a073cd6c. 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/KRA382321320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03cf3f9649ca611bf1931e0b48a2009ccb6faa77ab0e55e013a2cf1c00044fe9. 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/KRA382322314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d85ca169a953ee6aeeaac0598e710f4c92cd2338fdb5279dd79ee1895c1d9b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/KRA382322312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16334554746c2002f766b2ae955cac5fdc2b9d8d89847e881e26125f81aba06. 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/KRA382321463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd318113116c8f07a32083fd1a8735ddc672e64212793e0fcfa8ff8c6078b2620. 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/KRA382322315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a9bffd71f7619bb021263dcdd45bd98c53d0f6ec30840854ebd809282c0ef15. 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/KRA382322327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71061d19126dbef5ac02d53acbbefc48d436ade296005ccd5bbd53dc85eb15f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/KRA382321479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35cd1901b10643ff0cbc866f4c1a2ac0badffe870dcd266104e5f7955eea06e7. 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/KRA382321465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefce40c23b2aa7c8b07f41927e80ec823287de620db2dfb871956aa9ecf6c9d2. 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/KRA382322316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ce770389ec0437e44d2bdca441924f5fc17788f42328e0f16a2ae905f60c52. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/KRA382321480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c665d83b0c979ecf9bb6f4bfc625229e3bf9e8930f6b8096b09e44f39294cc. 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/KRA382321555.
Like today is our last day (Acoustic Ver)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf51bde8087876edf22e7ee70599e53ebbab91d8423c7bbb1871e58ff23e2a6e. 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/KRA382322317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd886866c09d87a23ddfd8bb00ebb5d788d600ef359375e2f66b262f6c84315f. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/KRA382322329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8319111071cf0c02cb49f82f31a09ccb01e9cc1f2e77fda52186d05a2e59bdda. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/KRA382321572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b89f35099f2767ed62d3a2f7b064b87f690deab4d3cb93378f9a0036790f577. 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/KRA382321557.
Like today is our last day (Original Ver)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8734103e4dc11380e20ba0e26f473b2bb68c3e98d82c78ebd19d01af1a3027f1. 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/KRA382322318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9db40c5d3b989227cc7a56e16a1fc68926741e17da0fb18d6b2b7d06cc0b49. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/KRA382321573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3d6bd36490df60030a3a17e966bee54d999576e97141b877c15b78543ca7ce. 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/KRA382321649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d0cddd85436d3123d0c657b2577d7d00c1a9f548de8e61a0e5dfe28e5fdc23e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/KRA382322331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9bc7d98a29eaa7f499215b0267e31113b988027a76280a75359f8d6033a6a28. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/KRA382321710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f07cdfd7d6c06fd97bfbad47709d16816a5900393e7c5b6021bddb691531ba9. 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/KRA382321651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c2bf54fc55e5c9520a028ab9e1b054d60b3cd452fe9ef91b94402f96dda3ef. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/KRA382321893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2df864fff9e419db7d21f632bf02aeff86f0e2f63fb31431caa19a448de78a20. 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/KRA382321856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5bb3d320315f3741c1731ece8ffb8c30dbe422a2ac6582f66e2c23f69ebfdd5. 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/KRA382322115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a181a1b8de2123874bdacfbf9153b56b536bfdbfc84361bbaa88a6cac67355e. 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/KRA382321319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb81dca636483061269f611cc71eac2a46f530df2a66c33b163e51c6978809cde. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/KRA382322116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9694a66b40e731e24edf758934b832347009e38944518a070e7e3633fcd9f18. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/KRA382321321.
Like today is our last day (Acoustic Ver) (Inst.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcae1992a9e5f6374c6126848f9d2deb44398526dbbff210e734ec924b21a7507. 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/KRA382322323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4999baab974d23665c213b3ac915236650a9cdedddede58da6ac9d656160b3f. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/KRA382321464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b632fd86c21a60049c57aac325e8fd5258753c6f6d5e45378f517bd0133d0d. 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/KRA382321466.
Extraordinary Attorney Woo (Original Television Soundtrack) Special
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93100f0b9ec8bdcf3f8936d4a780f5749b0a3c4e983b6ed42df74b62f4838953. 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/KRMIM2243756.
The Blue Night of Jeju Island - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a50acd6419b2786d8c0c4564fdb1a21bb45530d161b5a3db13a88dba60db12. 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/KRMIM2243757.