K One was a Taiwanese boy band. The five-member band was formed in 2003 and disbanded in 2008. History K One belongs to the management company, Wingman, managed by former 5566 member, Rio Peng. Other
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 0x1a2cf36729a564feaa7f8fbcb206614acaf2fec9a360f1131cc757cd368506f0. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e4503557-7719-496b-a86d-3e903e5f209b.json and https://artists.proofprofile.net/proofs/artist/e4503557-7719-496b-a86d-3e903e5f209b.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 0xec17cd004eaf8d9aa794773457041bc9ffff75289749ad5e5cd1789ef92f1040. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/TWA770700684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf55322d34e983b9e968e2e9ed243baa7b7bf8f5e8792e3ac71e834dc298cc70f. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/TWA770700682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf826ff94947040792576c99ee167d700283d544450099ed9575eb97cced86aab. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TWA770300156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda36524d51c716695d10603f1d88793b46261000cc78477571ee5b4e76ed50a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TWA770300158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ba61f4e04d1eb29f1939963a11dfeea6f8d92b500199f8f8401a7c74fd4acd. 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/TWA770400247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b059afcef55d4e9cef2d4673fa6658cf01f7f9c8f14d09873d36e01242a7af8. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/TWA770500398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76c0b3e966f03307b3ac63c80bda43fe4057a5c6581b336b3bd929c40cffdf6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TWA770500389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb944d8eaa6285875d0cd3f2134c824e725eab395b0a2516e705c4e23aa7e63dd. 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/TWA770400252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x113a233f801099e0ebfa23cf80e8fda191425937dcd33cda1cadc14133abf024. 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/TWA770400241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9c29d927fe7d6e0d5952ed491947cd75c440feafcc0dfa6dff23666e45201d. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/TWA770500393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x857b8f7908833d3808727733f056f5de44148458e6635d77473101cc5d89f89d. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/TWA770500392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf017ede0737802efb26ff980a57c1f37e1f23411dec612392515796758f4bf15. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TWA770600581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ffcc5f89522ff7983eac7520eba1a9daf58d6453b5f079ec3cac2d5129cb24. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/TWA770600547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb004f633a15c72315603f6e4f459d5840bd861747f1a332ae25901aeea6c56b0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TWA770600548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3772edc8444ba9217f5be405ffbeaebfc83d789bb4dd79b5167d0e399d4b13d. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/TWA770600551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73e7835ab392a2749adfcec45db3ca715176aa0bf403d95f3e2e7d5f7323ed39. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TWA770600554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88f3b7d4370651ef6c3a2fd74441f0bd030eaf439cf7b6848f05ab3aae99d57b. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/TWA770600555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf017ede0737802efb26ff980a57c1f37e1f23411dec612392515796758f4bf15. 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/TWA770600581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76c0b3e966f03307b3ac63c80bda43fe4057a5c6581b336b3bd929c40cffdf6. 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/TWA770500389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x857b8f7908833d3808727733f056f5de44148458e6635d77473101cc5d89f89d. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/TWA770500392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9c29d927fe7d6e0d5952ed491947cd75c440feafcc0dfa6dff23666e45201d. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/TWA770500393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025bae1525f87ad16209ed6587295c504ee39f7fd24443552a2726ded2e0f0cb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TWA770500394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf47b8850b32ea76f9c24f2eebc932b7d67992d0c50e174f368d950a94727ead5. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/TWA770500396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x356960576b2fbe75c5a00213491d1c46fb449f3487d0545b0d1ea5e48e19edf0. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/TWA770500397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b059afcef55d4e9cef2d4673fa6658cf01f7f9c8f14d09873d36e01242a7af8. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/TWA770500398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58caeefa1f8e007ba3b6de3a1887da9b354b54f8f5c32804a12de8b25090e3e9. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/TWA770300153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6308abbe448369a9019ccebe141abc4d13b566c7c960e2c88e76b20f78edc99c. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/TWA770300154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c74df6fd11ba203dded559ef2bdb6eaff2ba48ac7788561b6ea3812a23ed21d. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/TWA770300155.