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 0xad1c375d6554ee7d9b75c4c85a7a089b0dd31e8796db0873dbcb14f5e5467daa. 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/39eca8a9-ae1a-4f11-bded-458095c609ad.json and https://artists.proofprofile.net/proofs/artist/39eca8a9-ae1a-4f11-bded-458095c609ad.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 0xd0e9c853e4347c2144ca1191bac1aa529d56e7e4df886e0e4eb9ca37ede6a32e. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/KRA341773705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c43c23e20c935089aa9851c7b35d40e866775cb44cb76bf84c67be09c6996f. 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/KRA340910221.
Baking King, Kim Takgu (Original Soundtrack) Part.2
Immortal Materpiece OST Part.2 불후의 명작 OST Part.2
Put My Mind At Rest (Original Television Soundtrack)
Five Enough (Original Television Soundtrack) Pt. 4
Five Enough (Original Television Soundtrack), Pt. 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc90c730593233744676a8babdb25ebd5419507b1c466b8b4cdc3f8fb99e389. 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/KRA381602429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9809c713c28a86248467ac1c351cf9f83c35bec5e0bf10f36f54de0124cd0b6d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/KRA381602441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb285b11a3da0d4a76f6a11b9c30e4454454c1bcdfde25ea960da6c7c0467768. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/KRA381602433.
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 0x3b8bc509a87b9b8e2d7a61b2724e18e60a3a0c2b80701b7618f94e1f85d80a62. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/KRA381602435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x605debe695c108f58ff0e9993e97d7e45dcba510a04adf67cd96a3a99809c7ea. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/KRA381703201.
Lie after lie (Original Television Soundtrack) Pt. 5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd25bdfec956eaf057d9c02185e8625e3de8e531b3221ef1c27dfc618d54e0a. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZEKE2015160.
An Old Love Story (2021) (Romance 101 X KCM)
I love you (WEBTOON 'Discovery of Love' X KCM)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74013aeb4a31b35c51509497bdcd0656caeadd747bcda05feb41a5cdb5069b97. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/KRB472300734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77419c3e16637b9c99a2f5307072895ced8a3df59e6c16d04b8c0ac8be16a681. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/KRA382321142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4db9588f448582089469455ea17730da00f0f4b11cc79b3fdbff3c5bc4b004a. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/KRA382400431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8938dfd314f938605d7af8a2c3e32089b5513e1e9e9e3627300689bb12089c80. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/KRA382406231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b99f8c22f610fe1c70a690d0634c4dd2f5a727869000a816049b94fe3e8070. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/KRA382502407.
There's Still Someone I Love (Korean Ver.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2842e2c1b9001079a0df27437e350efc2a355700a4f05e81fe86019a75a86bd0. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/KRA382502413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x241308e70eb862a000b60507eb19addfbcb6b4e18dca5df7793a701361670d8f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/KRMIM2521669.