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 0xa121fe7aea0e40b04799bbfedb14fbec4f629d2b208c2e7404e1bdaf593113ce. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/260ec7c9-07ca-4683-b006-7bb0990b1854.json and https://artists.proofprofile.net/proofs/artist/260ec7c9-07ca-4683-b006-7bb0990b1854.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
look at me (Veiled Musician X YANG YO SEOP, SON DONG WOON with Cheongdam-dong)
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 0x9025228a7fd31e76fa92a0d5e56a7bc1b028aeb89b62ef19398a28d36676e824. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/KRA382321644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d5fc390bf72e146ae1c764226f58a117792ce004b05c45e319d951dcd3d5ba. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/KRNAR2233152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3517856a7cdd5375e9680565f0caa3ef8ca6ff8be3d18c513ec84e91cce6fc1. 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/KRA382205604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ee32c4f0697eee7607003181594f3d1ef0fb75cba7174de23a675ce5a5d052. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/KRA382205605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd0ca39ac9f9a7387850eeabce65b5d3ffd7b60c1e860b52d1b14ab3d47af519. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/KRA382205606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc04e7dd06a058bb160919ef33b79d30abef73e26f709e98ba71ea0f4cc9e009e. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/KRA382205607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ba9556554e6f2ce8eae30305afd4bf44a4a9a6fee3fcbd586dd02dfacd2e16. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/KRA382205608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef367b0d26619698c9d0d0d10854e4265f8f2459a6b1ca3f855341d3fb65f91. 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/KRA381901675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x614501b64425d7439a94d91d8ad29665f57a53cdc4092b8f3de520321f87000a. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/KRA381901676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc70040e461e2f4eb4d29d6c88bd0eb1f4d6fe9064da0fc8e32789543d1a8f9. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/KRA381901677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3867bd1c0dc6026eb9d57810093f5b620dd2a46e5d2aae29405509944e3bb37. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/KRA381901678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x740b485f5bf7da18e7822564d9ed3ada24edf5c686475ce95f0cf2365d50a388. Chain 2 (Bitcoin): anchored in block 960161 (2026-07-29T22:51:26Z), 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/KRA381901679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290260fe086010c580cb311e11a0f9dee262ec178c870e38f74cfe51025c30b0. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/KRA381901680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ed429d39342aa61cce8c78f5e61156bc0ff311433a2e83bf8ee7b9cead5d91. 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/KRA381901681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd7990a4595bfafe78604d549f4b4b870b225f62dd0e168f3a16c1b6b514a10. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/KRA381901682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb6875b0ad2bf134d10ceb4bbb9caa391caab5f11c138075043f57d80fe64791. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/KRA381800279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba80bd1b44bc3c18e3bacfbbe76c33128efbfe7354058da598f81f98baa99635. 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/KRA381800280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd344b75a3b96d8c0a5474477e171888af203ebb21bc2171b1252176135fb58e. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/KRA381800281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8328ddb76627563cc25bbd740d7dabce8981659f65590c5d21c545b5bd710ac. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/KRA381700236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea00fe7f2af4dc923049f82ba689c2e6d40ff0922c9a0643cc4c22809c788c46. 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/KRA381700237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff39d413b938a030bbb961bb446a9d68b93e2c575de923300b8b60cf357cd2a2. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/KRA381700238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf35ad7a9eba47b0b532d8a99bf1a01533e77a16c36fda36874ceb1085baf9bb2. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/KRB471700141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f944ae8b30e3cdd2383a1ccabceec51fd6ee6b222fbc1c12b49b1e851568dc. 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/KRA391000211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc6376038b116dc10461cece33d0242a00b9dc8662563f99a79664a461c9f747. 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/KRA391000212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21bf0d16d91983f229d8ebab55f29102852f422c9ed73e0b15fa3882821dcfe8. 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/KRA391000213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6fdb97f9680edf0fb35d0b335bd264fcaeb623801e0bb3977f05aad8b6152c. 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/KRA391000214.
Goodbye with a Smile (feat. SON DONG WOON)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x212ee511f66fb2a2e420eb3789ac86916d16dcf4837af4ee1d4bcdbd554ab8f1. 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/KRA381901619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f924cd13a9b0c36109c270936f4e4d7dfd532f07243287ad97508e9fb990b33. 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/KRA381901620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04dbd2be32fc273f0e5b594e7aec3c6642644eed46f3d5e1ffe10686780789ef. 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/KRNAR2205367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04dbd2be32fc273f0e5b594e7aec3c6642644eed46f3d5e1ffe10686780789ef. 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/KRNAR2205367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb992ee7dd10f3010cf65cd770b9604882dfdb4dee0a540b47e09fc236d91e843. 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/KRNAR2206523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb673c28d7ee92a6c8076591469e3e03deb77d2eec468b30cdc075807e8dab120. 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/KRNAR2218458.