Achime () is a South Korean indie rock band. The band currently consists of Kwon Seonwook, Kim Sooyeol, Lee Sangkyu, Kim Kyeongjoo and Kim Jeongmin. Since their formation in 2008, the band has release
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 0x5567a277892db2a1fc2f879efe73253dba23ba9dadf4b0380c4beb5044229e5c. Chain 2 (Bitcoin): anchored in block 953773 (2026-06-15T10:40:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c612f207-c616-4e80-837a-27e974eda243.json and https://artists.proofprofile.net/proofs/artist/c612f207-c616-4e80-837a-27e974eda243.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 0xa4f8d234a74bd660ff93cdba5b8a1c7f3b6439f6b500b770b1ae2d26c4cbf96c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/KRA351001130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd3266f2c8ece5b52e17df2af69fcc4019c760040027c119d56591c1349b7dcd. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/KRA351001132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6336be1776a623c301ed7d61127b059009f395471080b1cabed4a1b72acc508a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/KRA351001133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d51488424cd6d18d8d60c7825665d0a482a5242d84a7b95e0491f83909a7c9. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/KRA351001135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c1e2e2e6a90d92993b41a4c6e014fe9a76050c0bd213d4ab07d1e5507b2a74d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/KRA351001137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb93278089a05bb1b7a92787688c965f866c7f0b9ca07a7250e560379816560ed. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/KRA351001138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a2c1ce5ef8c656567f2be7af50a9ed59a3ae7bc241703aeca3d1eaba2ea7ce. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/KRA351202709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c2749ac5c3ecba678f55c48231c83dd510971fa726dcd60485b4727f341046. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/KRA351504467.