Jang Woo-young (; born April 30, 1989), better known mononymously as Wooyoung, is a South Korean singer, songwriter, dancer, and actor. In 2008, he debuted as a member of 2PM, a boy band currently man
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 0xa2b96a87cf28b4f747fa7e52eb4912bd522cab008d35bd71928f4d3ceea2f22c. Chain 2 (Bitcoin): anchored in block 953730 (2026-06-15T02:47:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/92ef3f51-9554-49d4-8e81-71fdc5f1a9fc.json and https://artists.proofprofile.net/proofs/artist/92ef3f51-9554-49d4-8e81-71fdc5f1a9fc.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 0x215897838a571cd02854c95ed9b4bfee428655757e78aa0092672fa324480b95. 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/US5TA1200501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aeba0f9f13991ab4cd9b5cf7126a58bb23d8604d8c72fb9e259e78e8477f0ed. 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/US5TA1800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1761ffaa94608ff29ff3d7e3abe0cd4ec509f589ed98329e87156c1025c0bb22. 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/US5TA1800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d63d9e9a82722c092eeb46faa683ef04a52ae9dbd126777496014fb65e95860. 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/US5TA1800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb854463c9cfc35df8b60d4f85872bdc6b38d3cc6bbf91328c5577c9d4e44b1f. 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/US5TA1800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe41317316be4abc29336cba2fbc6c1b3be2863812c224eb4644c83ac01629f83. 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/US5TA1800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x357fa6f2568fc5844d9d0bfc32e4933e2fa3138c0992b73b4e5201bd546b29e4. 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/US5TA1400032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x021b2c29be685e0c81655535c9f82464529af76aaf3577877ee3d9253aced776. 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/US5TA1400034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e44c90ca63f3a057d7afdc721a8d0aa4cfd7a5f8a3740e3bd60feaafbb0720. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/US5TA1400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db61226772fb8894233af1fbf0287224d04e3ded26c37cb97d119972db79d53. 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/US5TA1700093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe4ec7d65e26fe77586b867759f5fcf3f4692ced5971eecec846bdf2677265ed. 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/US5TA1500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c0075a2e4ad53431add5ec07e5285a3a27bd56a5f58e7178a29d01ad599ef5. 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/US5TA1500020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11464046bb6a7333946b54024009f54622933d4a8296a27eace7a2691994b686. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T08:20:07Z), 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/US5TA1400083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453f141024ba5733b44cd366404c6f15e2ac78086943842108f00a614cd99170. 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/US5TA1400084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc2dc05dedee6977b856caad49fdebf9090b4c76063cd75f71c0cf53a20e6d7. 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/US5TA1400085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d188abae5a2f3e23348c7f09485366f3a7d1e3339488e83741d0430afd4a8f3. 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/US5TA1400086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f08cba17bee7a3c2b9f1a13695feefb4902ff53f8b5400013268018d6d4af9. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T08:02:50Z), 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/US5TA1400087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d459ba38cff1165df677430ee2b196f803c77deb6dbe8211f1a80f2ba80a93c. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:21:42Z), 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/US5TA1400089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaabec8239b014bf44471abd71984af0f977c1113e7711c4c099ebc38bf9443a0. 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/US5TA1300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb27d822615d22abf6e0c8949d2c9be2fd98e9958f4ea28ef541f89276f909d59. 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/US5TA1300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ea0879ba50bbb5ab537214d74fb30a4eb232d66869235751a50462e42cd687. 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/US5TA1300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab3cee60e7da58993b33c3ecdd176538f95b150d5e989237bf155b8e6d81e99c. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:33:31Z), 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/US5TA1300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3808979e8ce3bb94385570210aba467e8a430c3e83153997c6862f99a4b594e. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/US5TA1300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad233434ae8de67b4b90732026fc2623342751e3ec04b0cd107770eec095094. 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/US5TA1300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bdcdd63dbe31e66cde8eaae5ca36655d8b082aa1dc1a0e8d11cba1ddd949903. 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/US5TA1300023.