Park Ji-hyo (; born Park Ji-soo, February 1, 1997), known mononymously as Jihyo, is a South Korean singer. She is the leader and vocalist of the South Korean girl group Twice, formed by JYP Entertainm
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 0x36c47da51e526219275698e738e2b0239cd04f387d04387816a25827764c1c19. 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/6da38d49-1d78-4470-b05d-65169c9d7866.json and https://artists.proofprofile.net/proofs/artist/6da38d49-1d78-4470-b05d-65169c9d7866.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 0x213e256e9b839db210854f6996f19493b7e1265b59dfa472ffeee8b193629e17. 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/US5TA2300087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7efc142fb2064513112a65af8b146404a398d5fff820ceb7a0b27a30ffaedb20. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/US5TA2300088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9395be70a1d37ebf14f87dcf4e2063b158fdf440b364b8bcf2c166fba66f00f. 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/US5TA2300089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa80ab3e8b91f9fcceccd7a1ce580311a794414deb584bd7d4ef6fb457816044. 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/US5TA2300090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0610a750f2152e3103c4e66aa984b4d549657f8882d6145a5929f800afde71f3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/US5TA2300091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3148f58ded8c33c20bf4af7bb8a49d6b3f1dfa6ea51e9b931c6d801fae0b06cf. 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/US5TA2300092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7610e6a02b98ec237c418649e6c44139870ecc00e53ee7b4595e3ed1c022cfca. 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/US5TA2300093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x314ceb4ba7e1e896fcdad554326fc614f740017c3b185719cf1a382ae88816f9. 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/US5TA2300134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7efc142fb2064513112a65af8b146404a398d5fff820ceb7a0b27a30ffaedb20. 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/US5TA2300088.
Summer Strike, Pt. 1 (Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11d7c16e5beeab9452cb2a9973236627e606de81be3acbdf1803a06d44c1579. 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/KRB472202145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e5de405e1469544e10efca373343e8c22186bf5743f9bef5040f547d682d18. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/KRB472202146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65789f0d785dd7448920e12a1b8783f7834278adcea10c7186b1c6eaa5019ba8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/KRMIM2243213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa9571970ea5573b966ac670063d6324e9cc63a86bff638453dab39887aa9e46. 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/KRMIM2243214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5927d33f238ca05872e6d12c5e0984b3fe8f082c57cbc5efaf23580f507a5fd5. 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/KSA002101551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76cc0598a0fee7af33994a10cc220be42ebd06c3a1afba394ed6e9257902bbd4. 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/KSA002101552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351707587e27f10eeb1a683efac7fe2aaec44e48db1ee18c1fb6655a135b5b0b. 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/KRA341566056.