Kim Dong-young (; born February 1, 1996), known professionally as Doyoung (), is a South Korean singer, actor, and host. He is a member of the South Korean boy band NCT through the sub-units NCT 127 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 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 0x5a5cbd951a31539d700e15bf6b0d630ea6f4b7b0afad5fdd638a3092acec2eac. 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/25b4c1e5-fd7d-41cc-bdd3-cb17db5dcb26.json and https://artists.proofprofile.net/proofs/artist/25b4c1e5-fd7d-41cc-bdd3-cb17db5dcb26.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
YUMI's Cells, Pt. 4 (Original Television Soundtrack)
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 0xd7b4d5c64bc4610dce7a1aa0541233697f1f87ef9a3cbf207d39b7dcc94077c4. 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/KRA492101037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6507c33c2878841321c3b22020d2f48788b9b86327f035807994815a73b1c3. 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/KRA302200278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19598b61dbda05e91ac837464f4703dd9be130fb231effcdf57223021222aea1. 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/KRA381602596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba8b54029e4a6e014df2844be4234194263f6c73b02cec50b521cc13952872d. 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/KRA381900593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0fd8ce827258e6b5db6844e27a02fb8567d62eb913efc61f1f408191295fb4c. 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/KRA381900594.
YUMI's Cells (Original Television Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b4d5c64bc4610dce7a1aa0541233697f1f87ef9a3cbf207d39b7dcc94077c4. 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/KRA492101037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b68888eb714fd1b220c17534d1d8c178eeb02ee645912fab4976abfbf3188f. 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/KRA382103832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac9a887c9f3214118c5337d15d0ced8ba833ea0576ad52028468989bf1900572. 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/KRA382103833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe670bbbcc8ef5358891cb7d9c750024ed3206f8b95e3b835bcacbf7b652f6edb. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/KRA382103834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x726bd519b62cb0d5406ff15a58708d6b78ecca146f8dae7c76b9f795498bb760. 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/KRA302400080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf2d61d675f400e14898d4987a6db25b238bf7faab34d923fc8dbe0ff01e845. 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/KRA302400081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe798316463bf6f1b2a02b3093420f9e4d4e45e18c57db01c6f14437604468471. 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/KRA302400082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0969d801da3eac154282f6f678f1e46443a39e87f27a866eba4dbf3eddaac43a. 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/KRA302400083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7825f231ac51a6e1e09f84b4f0cd2e664e6b39428943d08f3ade78ea4e5360de. 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/KRA302400084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdc6edf9c36b73c66fac9b7f476cdb4f12e78143485273b213c43c67030aba2e. 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/KRA302400085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62911510c9e1a598a4f2750818a8d8e3b0ebe05b7b52dd23a161360d8cfd7467. 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/KRA302400086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d9ecdcd65db3b89d817a3d597ad045f824103ea75b92d7186db82c03f66828c. 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/KRA302400087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb49860703a0e2f4ccbb839f36ea260e1f53326d2cb1ffc593af5c01cbcbc70f8. 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/KRA302400088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7310569e5f3147b3bea8e5f45e439bd19579fadfa5d5ba6bddd322ff69c9f5d9. 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/KRA302400089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x045b72bb04f07ab05a15ec580d6a965d775e2729f1996f922a2b99dbca3c90c6. 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/KRA492100251.