Cha Jung-won (; born October 23, 1990), known professionally as Car, the Garden () and formerly Mayson the Soul (), is a South Korean singer. He released his first EP, Jackasoul, on September 30, 2013
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 0xa59feb6fa35ffe3b2be8a2f23e6f2a43cb3f31859e2671242748a7a8e317a152. 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/b57fc2de-4358-4000-a25a-83863894303f.json and https://artists.proofprofile.net/proofs/artist/b57fc2de-4358-4000-a25a-83863894303f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
투깝스 Pt. 7 (Original Television Soundtrack)
Secret Mother, Pt. 1 (Original Television Soundtrack)
The Secret Life of My Secretary Pt. 4 (Original Television Soundtrack)
Chocolate, Pt.2 (Original Television Soundtrack)
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 0xf97861ec812933dca7021f434d8951b3a440c1c3e590ac4b661c1ebf32fd1d7d. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/KRB461900835.
Begin Again Open MIC EPISODE. 13 - Cactus
Thirty-nine (Original Television Soundtrack) Pt. 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5854b31e5d9291627a4b48a848fcb06a14f643f1720c61660f688c3c1b1c2e65. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/KRF702200136.
39歳 オリジナル・サウンドトラック Part.4
砂の上にも花は咲く オリジナル・サウンドトラック Part.1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd69547d9bba0442a0d6794176d83b1490ff733afd9755aeeac9c9dacd736dd1. 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/KRB472302030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15fa911ea879725689a6288380dfa0ce9096b75de9fce6718a040e0e9df5731f. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-21T16:38:28Z), 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/KRA341519788.