Wooah (; ; , stylized in all caps; formerly known as woo!ah!) is a South Korean girl group under H Music Entertainment. The group consists of five members: Nana, Wooyeon, Sora, Lucy, and Minseo. The g
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 0x1db223905a1b6b2bd7790d6d7a4522048fadb316100256dd0b6bafdf7b9a6648. 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/a01a61ca-f052-4f9c-b4d6-c5fd4554c1b0.json and https://artists.proofprofile.net/proofs/artist/a01a61ca-f052-4f9c-b4d6-c5fd4554c1b0.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 0x177b627bb6273db5895aee16968792531f9d0c1d1132c6f6ed7157ee5fcdbbd5. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:59:58Z), 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/JPB602064329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bed6df085c44dc7681903fa55196a47dc51345e8bff5e9877da33c4e1e959e1. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/JPB602064330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38fb44ca37cb5d5623461096680bb10cb14db2bfa839d9ba57ab8bb0e66b65e5. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/KRA382006444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2466af26cdc75cc34407cb5258bd9de888c0de93bdd425f1b8df9feef898b53e. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/KRA382103968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224795f39375ffb2cf33daaa86ac8c50fa5795c23447dd1d6f77fcaa79b77926. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/KRA382103969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x881a170328d4b3053a2cc04f8c5e8256e83135213075550d46ed87781ebcef25. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/KRA382205588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc0660a533f32a2c67e311d5004da204a3a9e40122461da5d5a84be01ae1e71. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/KRA382205589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda371db212f6b5029bf1396ad95deab1d336c7a915ff4f710fff5b01912035f. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/KRA382205590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd85b6e450e3eb1ec62e840901aa941842a83b6b34030e1c2b074c0882c205cf9. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:01:26Z), 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/KRA382205591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff5603de99ce62524c57d78ce907484ff9b081044706f8258244150a7e8ee43d. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/KRA382164531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f5b992d9af870d0b67233d93c73ca6bb507ed7034a5f8b850374d180d89efb7. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:20:28Z), 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/KRMIM2248775.
Becoming Witch, Pt. 8 (Original Television Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37fd682261d02c4acfd6752b9f7fe734d3ac2739d2fd017096a664a73d3db9f9. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/KRB472400905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39a8d60ff8d82008e78fc2f05e72650b52df9174d0e4ced5b505276a1d501e3. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/KRB472400904.