Jin may refer to: States Jìn 晉 Jin (Chinese state) (晉國), major state of the Zhou dynasty, existing from the 11th century BC to 376 BC Jin dynasty (266–420) (晉朝), also known as Liang Jin and Sima Ji
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 0x2be119fdb6e2069cb8260807db405eca217b9b4ed306d5d72d9362c311ac2064. 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/207698ca-a8ac-4ccd-a793-a5ce2405a26d.json and https://artists.proofprofile.net/proofs/artist/207698ca-a8ac-4ccd-a793-a5ce2405a26d.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 0xacbec0616c0c71067a4c531b024a33d2ac1cb06e0899c7dfccf80af28b3ea1d9. 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/USA2P2230326.
Jirisan (Original Television Soundtrack) Pt. 4
HWARANG, Pt. 2 (Music from the Original TV Series)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e40bd88ae95c142bec9670f7a62f5a0b5f734ce8329149b1adfd98e39d3861. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/KRB461601564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5725ebb4cc12eded0ea713863df72059b7c97410df9b96b5043d0d6a6e7160b2. 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/KRB461601565.
HWARANG (Music from the Original TV Series)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e40bd88ae95c142bec9670f7a62f5a0b5f734ce8329149b1adfd98e39d3861. 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/KRB461601564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e40bd88ae95c142bec9670f7a62f5a0b5f734ce8329149b1adfd98e39d3861. 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/KRB461601564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf7252235b8c61a0b876166a2be1e0d93812edbe20980e6791f4f31709766e18. 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/KRA382500536.