Young Posse (; stylized in all caps) is a South Korean girl group under DSP Media and co-produced by Beats Entertainment, an independent record label. The group consists of members Sunhye, Yeonjung, J
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 0x37ae75c6ad8ff1bdd118dc41dd8f44f0b3d1416d7023d1746bab3375c87a089c. 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/893890e7-13f0-4493-9439-0d3ef1028e28.json and https://artists.proofprofile.net/proofs/artist/893890e7-13f0-4493-9439-0d3ef1028e28.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 0xdfc3acf9af7e072d6d05106a56637d39536c9a0d41af1d3c6b60fb9813383321. 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/KRA382401681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a676ff4647bb44da1b3fb6262f3fd0cd3f53a9f5ee0473e373f164bb39d538d. 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/KRA382401682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a8a4fcd1e67d755c2888d81c98078beb0cce0153d53e62c38750033adfe730. 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/KRA382401683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367aefb3aab10baa710168538be5dd654741a1bbe52212275349cbad0c42eceb. 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/KRA382401684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x564bd5b870076295bb1ac4b9b09d392ce61d176c064b50ff77839709b6b8d53f. 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/KRA382401685.
YOUNG POSSE UP (feat.Verbal Jint, NSW yoon, Token)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd426f5c531aec6d67c9601882bed241cc0cd499a7bb9c6d4aeb4f00f38b15d2b. 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/KRA382400801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddbc0887e9857efa965ebd2559718b941e2ac612744ccb750fbed3b1922ebe21. 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/KRA382400802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa14343690f41de7e528e76612f3178e1772129931d77443babef0d0bf0b3a9dd. 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/KRA382321122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d354fff9c561cec83695eab2af63a395a582c20758e2a3111f5b1e0f2cdbaa. 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/KRA382321123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd1e143fe4ef32c474e20b877190a29c177149d9a56a43ce24834bb43792241d. 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/KRA382321124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a7047dd65047ff3f63854072050c98e75dbc4aebb5a0e586c3ff936c81d3281. 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/KRA382321125.