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 0x40415e56f1ce3fd777d42f5854377d0f424c69fa3ad0c9441565069d25bb6054. 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/4a5475c1-87b7-4f2d-8774-dfae5f19ddca.json and https://artists.proofprofile.net/proofs/artist/4a5475c1-87b7-4f2d-8774-dfae5f19ddca.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 0x369f4bed9b6ef44db051aab7badafec99fae0089e62033cef067904f88b36828. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/KRA381904121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35468adbab7d6b9c3f03e6de49a8b90ad679a42f3a45234207d28e8c19094339. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/KRA381904123.
HOSPITAL PLAYLIST (Original Television Soundtrack), Pt. 8
Record of Youth (Original Television Soundtrack) Pt. 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd698f491422912abbda8ed3eea5e7a8f4e9f55d05b9a63bbaf7b532e85707327. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/KRA382102593.
One Ordinary Day (Original Soundtrack Part 1)
One Ordinary Day (Original Television Soundtrack), Pt.1
Thirty-nine (Original Television Soundtrack) Pt. 5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ae76cbcd6e4f1caea7bb0d1ce7513dd7ee7ec392484c29a3aa983738f9a999. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/KRF702200143.
[Vol.131] You Hee yul's Sketchbook With you : 85th Voice 'Sketchbook X Whee In'
39歳 オリジナル・サウンドトラック Part.5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeefb2e5d04d71e81ad5b477599f66b3fe608549f2ad47e98f8755096c0f9eaf4. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/KRF702200142.
[Vol.132] You Hee yul's Sketchbook With you : 85th Voice 'Sketchbook X Whee In'
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb575a882637ec27d04e73453287f83dd393782c6e00bad3d80faa687e81a427c. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/KRA382204514.
Melody (Gongzza X Whee In) (Original Soundtrack)
EXchange2, Pt. 2 (Original Television Soundtrack)
Work Later Drink Now S2, Pt. 3 (Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60eb2df7096c501a3ec41003af7f049dbb0397d20e0da97549f111c8bc3f053c. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/KRA492201282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb36bfb4a8916acf503a0137327189ff6063c37240bc84375c4147b9f68eee92b. 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/KRG132300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe754ff53996944f64c3ab2c60e0fff1c576887f26b2aee7e32cce42bd1831cf7. 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/KRG132300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ab566154ee607ffd27183c6de5acb69a445588eae5241535454afe28f26369. 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/KRG132300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d58084c02ff196e14c8356f760a385ea316f8b307f4350b37c83685118d064b. 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/KRG132300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bdbe0fc21a057be7a095b03862a72f09a37626324eea122622688fbdceb9217. 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/KRG132300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957c0ebb9dab15129a37af748ded6097b6a69c8f8d1177401b2899f7c113af68. 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/KRG132300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7fca0802e5984f85ea1b645fc57406a8d0563c013371b859285c5ac499495ed. 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/KRG132300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907914a80106975518bb0745e8789ddbf4b214080fee60f4039cc8c9fece48e2. 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/KRG132300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b2ffe17802fcc81a29df1b1daf897962f64df782b0ee0e0c06379be573a01b. 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/KRG132300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa37f70dc2dc3b9a912a828a622ad0c2abbc467498a9a4aecb131d3b6cb991e41. 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/KRG132300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485ac17627d3a9a2c1f30edaa3dc02d342c6ee72075462828645ee9acafd38de. 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/KRG132300011.
Rainy Season (The Last 10 Years X Whee In)
When The Phone Rings, Pt. 5 (Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d87a9b3a3ee6b06e0c41e8f4c358a8a9b91e08e6032aee9ca1902241904518. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/KRE022400039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c4f19a1109322e0e40fcee6a5f9ff64d434082faf7b58b0f47ea935aeb647c9. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/KSA002500391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb8b8d35d8c4509ef1f38f3c2dc1984fd09b0051be6f83468a8f03876e69147. 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/KRNAR1603001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9996598cc06dbf5ea760f534e1f75905dfa3426d47579c1c89d0c451e9d0d02d. 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/KRF152100025.
Frankly Speaking (Original Television Soundtrack), Pt. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16b6e9a0e6654975724779d1c1b955a4cc033b67102cfafa9648d756852e4edd. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:53:49Z), 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/KRF702400154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f8644efd3d1eebe9cf1d78001a88e05a97cc92c01998bb1cdb721a8f4dcab4. 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/QZEKE2026763.
Bathtub (Feat. Whee In, JUSTHIS) (Prod. R.Tee)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d4f1f454a5b1cfab287b1e286f2950b342a9a352dc4786b1ce8b3851d2b132b. 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/KRA492201308.
Two Girls Love A Man (Hwa Sa, Whee In(Mamamoo) (Prod. Kim Hyun Chul))
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf782c9b452a40e67893ecc4e4d54a2b52af02bcf5378eaa2c674840f0b519378. 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/KRA381904840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x142e11883d6b1945608c6e527cea6d1f9ef35506b59a0a0a1f8181dbb2a57bfc. 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/KRA382200006.
DA RA DA (feat. Whee In, Jeff Bernat, B.O.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeedc307209d31a5e6b0bda8adb84710063fb71f6948c5681a1524566f8bfb7d. 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/KRNAR1703886.