La Poem () is a South Korean male crossover vocal group, composed of four classically trained singers Chaehoon You, Kihun Park, Minseong Jeong, and Sunghoon Choi. La Poem was formed in July 2020 via a
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb71234c08a8a0ff97927771f9f067754c4db55554caae9b475b0c250cebccb. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/737d16af-ccfc-4f68-a968-2b8e83fe6bb3.json and https://artists.proofprofile.net/proofs/artist/737d16af-ccfc-4f68-a968-2b8e83fe6bb3.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502c8a9aa5a5c74cb349a4e0ee0d76223bda01882e1f2129f87bce5c1019ab09. 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/KRMIM2033664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c748ddc6621b58499df88cec26121e4204dc17c89b4add4653df6ac74b31da. 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/KRMIM2033665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b748cc756b0a7b0c2d87ba135b0b98c3cfa550cb33171c13864e63a57bfc1f8. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/KRMIM2033666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d974ce5bfac1153ebde6d5da24188718843ab0d135729bb39197c0779977ba6. 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/KRMIM2033667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d7a6bb96d92ded9ffab96a093d27bc8cd2e4b07824285e8f21a3851489d6d57. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/KRMIM2033668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ced704401e73b947eb1bdb2f2ef75b6ae02c675f5e6342c988dd8a782a67b41. 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/KRMIM2033669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a506cec41e183b5cde3ac1704a89467e91b7ce88ee5d348810c7a4712983f4. 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/KRMIM2033670.
VINCENZO (Original Television Soundtrack) Pt. 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb3ccf4e40845015e100524d4529d4652690c5b829f47af27f4ce7824bd1a1e. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:06:32Z), 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/KRA492100269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2213aa6786c8a794a69394f233666b5d3a3b66cf252fcea226ac9eeba92bc24f. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/KRMIM2125094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc70640f1f9a9f788226caf638a9e4bc4ca3e6498131dc3a2e43b205eb01078. 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/KRF702200499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c84ba1b4abae7de2e0f1acc5361973bbaa692e8ab865d2d7da1ea8fbda96e0e. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/KRF702300069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46caba6638b8750e691700d8c8fb73e0d8b2c1089bb2bba6792804fcd5776c49. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/KRA382300926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07923e28339035bf0f4fe251ccdd25172a19aafe121c3536f8923559a876a050. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/KRA382300927.
Webtoon ‘Return Your Soul’ Part. 1 (Original Soundtrack)
Bon Appetit Your Majesty (Original Television Soundtrack), Pt. 5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a3945d9582e4f41078c518a1f2de147d7741ba51ecd6e0d9932fbec3791223. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/KRA252501618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58e26a35006a8f738a4789c3539753b7a1e047de36bb27c9448c63d81eecc28d. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/KRA252501619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd326b14e6090fc0721b4b857adaabba43685b2de0364541900f1b9c6ce94f640. 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/KRD442100044.