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 0x4e4a14562348b221d3190973e73c37949feecd84920b0982bc6af0d37ae132ba. 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/6f52905f-bc8b-4260-899b-08aa0a7df41a.json and https://artists.proofprofile.net/proofs/artist/6f52905f-bc8b-4260-899b-08aa0a7df41a.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 0xff309967bce71f7ae88cbca9a748c8b5ecbc235b60b2950f52aac3557ab6d752. 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/KRA301900232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e49347ad069ad517d65a51ff891cfadfd401067efcb7cfb13244d2597fa9f1. 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/KRA301900233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9bf6ee9d1262fa1d353a79b365c5309d2cf0d34bf011d12e70046c9fc19cb3. 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/KRA301900234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a3998e41680ff6cf011655807e1e5d100f9beda542ead052a355a97a2c592a. 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/KRA301900235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b3ad1cc74f532b211ad3f4b9c82af7b6d358c804d92edc64c7d639daebe774. 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/KRA301900236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b2b3e20ade010d9da6320fe11989c10c0241d5f2a2d2466da5218c8e8d4ccab. 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/KRA301800221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef6616de3123fddfca0ed7cfcfc38028bb093a48dfb7b62ff273a3f36641f3bb. 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/KRA301700496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8abf500e51840aae7f1fce66b77b80ae1c0a11f6984bbf9877896f3ccfbcbd5. 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/KRA301700497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x304ad052e4dbe4505c60fbdc733a1a1a963f88199f7a54d7989963df0afb54c3. 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/KRA301700498.
Amazing Grace (From 더케이투 [Original Television Soundtrack], Pt 3)
Amazing Grace (From The K2 [Original Television Soundtrack], Pt 3)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dc2af44b1935e91b689c7bc212d694aa3e35511f9aa7789f2095b046ea70d3b. 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/KRA491600665.
Deoksugung Stonewall Walkway - SM STATION
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f00bbc7f6df1326812b403493e3c3b50207b59a2f855c4f03cce339bd1b6ab. 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/KRA301500822.
Deoksugung Stonewall Walkway - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26f8e10150f07d0d195549d62ca03e6e47cc28d5cfc834f202e68cc672f0eef0. 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/KRA301500823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee0cb7027a87b1e77d48e61948ba2bec5d417c8f3ffdf35dc532fa1a2e369063. 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/KRA491600798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac30cc183099e7f65fb7d5b3b05bfa04db9f63779d399f7a52430270f3275829. 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/KRA491600799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19bda9506e223fb2b4935708997774f1abb47c8874328fef37ae265aaabac959. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/KRA491600800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x982694c3ad35b5666ccad3b338be8caeaa4491a8eae280c0db55e0deff56f57f. 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/KRA491600801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe80301bac4bef273c934055d3a7f33b4e26b19349623cb8c936f9689b0a1c13. 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/KRA491600802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3814858fdfed69067bdf57c8369d75fd1d08e655f5d1a0a6ca7f703147f61ba7. 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/KRA491600803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fce07398f6f7e191df5f81533a19deedb055b9200eb657c9ef475f82abee638. 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/KRA491600804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e8e12eebbabc5811b8c9846be9efa915f03b879f90100df888557797ff3d815. 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/KRA491600805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a278ed8bd15e520756cdb285197b00f412139752d33d3eaaabf182e58b9f80. 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/KRA491600806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb82e6fa01d87b33356e093e7d90cd4e16a843e0d4c314caba999a879d6c7012e. 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/KRA491600807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80226c7939e2c9a5a79c676eb9fe609babc3b37e43f103d59d2ac01e1f275333. 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/KRA491600808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8353c42ada352cdb8b1082018e7dd42e4668274a29063d48aed76aa3507eda9. 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/KRA491600809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9fd7f89267fb85742a451760890e404b15860cd29fe4ab90bd986a0d659031. 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/KRA491600810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa386932eedabed3699e293be57da5efaec5b30b5f35d4af624384f8c2f4fb7a. 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/KRA491600811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16fdb7115e366d2f8b075e43325bf33f3c772f82c661489655aa4a82662f341c. 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/KRA491600812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb62f7047689d3ca21a354863c4b2d3ee640c8ad1c8a96caab51b7de32859552e. 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/KRA491600813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9324d38fcb7c286444581cfa8f264bccb6c9e157757113aab58e9afd3fd0f934. 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/KRA491600814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf772f026de12f0a07df7044ffa13b3c4abce01bd3c5b3d2a96595904456d4624. 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/KRA491600815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x251ee3d2336d831cfd55393bc7cc9a6b541daa62777cb6de59acc87d7e6787c8. 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/KRA491600816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd08104cb4b0462af4be00dcb205bef1aa84f01a1770c95caf1058429a253d2. 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/KRA491600817.