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 0xe81d94a2a943b8abe779e7894687a144181d9487035ea43e9ed668fca5829b9a. 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/d8067696-a362-4bfb-ace1-3afc056609cf.json and https://artists.proofprofile.net/proofs/artist/d8067696-a362-4bfb-ace1-3afc056609cf.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 0xb29e42317514458db1a1b34c4ba6ca897c40e839ff40513df13f2988ab89d482. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/KRA491600418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x004cf95ab8e396931d105241c708ceb999d6986399de0ee4311c770119d87ddc. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/KRA391700018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0aeb15d0515ebff6ea629f1c65aff7fee6a0b7ef5c6e89d2726588a5bbe0fe3. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/KRA381802145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e05f3d8baa2ada7ff62ea72dc3a38434754701431173f6540f8d03ce64f56c. 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/KRA381802146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d6c09e3f924449b3bd60a08226d97547f6ec787ad3310eff148187b2d267cf6. 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/KRA381802147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d644a21ecc6afff93cfb5cd3e8efea7061b0c1d9a8a9a6b48d35af43cd66651. 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/KRA381802148.
My Friend's Romance (Original Television Soundtrack), Pt. 1
시를 잊은 그대에게 (Original Television Soundtrack), Pt. 5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe586f0ae5e7fb9432952959008f0ea4fc313ee52a11328a43a974b16065e5e40. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:51:57Z), 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/KRZ291808079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebfb11b98bb6184a080e7d926accf8bd31e175a0ecfeef7fd110eb6944575b26. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/KRA391800061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa727648bbc396b81927cc68b7e2502e352925ac92336b47d3b51c4d8252b57f3. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/KRA391800062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa89a15c9ad8deb5df85ec3c3fa8b6fb98c65638e0899c758c179bcdbb93db9f0. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/KRA391800063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x434cc598430ca344e3fcba1f6a746fb767b8d35264532b248633424df1e1560d. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T08:32:30Z), 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/KRA391800064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x745d03ae7058873db7a559ae448c30d8fc11c4fa16d1991ed12a44f1fcff1ed5. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/KRA391800065.
Joseon Attorney (Original Television Soundtrack Pt. 1)
Beginning is the First Kiss (Original Television Soundtrack), Pt.7
Heavenly fate (Original Soundtrack from the Webtoon A Not So Fairy Tale)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc453b0a7dcf9fa93b02c3eefa6ed20d9e94248a00baf291b04ae7f6bdf62654a. 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/KSA002400268.
DOCTOR LAWYER (Original Television Soundtrack) Pt. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x977042369d6fa1b32523dd97e9e3099442b487e37ee19caae123262c8dd1cf6b. 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/KRA382405328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a017aac7b491688c156c0a20d0d39fe3dc664ae20c9dd998edb1a6276877331. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/KRA382405329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6401d2f9eaa55bd3f5a2f2bd8d961bda20d1b7f4a3daa11c1fb952d5b240f5d. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/KRA382405330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde51d47be2dbeb1ad25f0a1aefea29d3faf4da09b0b7a3b47520fb438b9a6ab8. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/KRA382405331.
True Love (Secret Relationships X LEECHANGSUB)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c84eb84788c2a7db62e18aa1aeefaf9c744226296e5e81df91d078b394aeda. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/KRA382406728.
Buried Hearts (Original Television Soundtrack) Pt. 6
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d6503ab12a99e6081e060c52a01c179ad18737ac78196e17c99e1318639cb3. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/KSA012382639.
Farewell Once Again (Original Soundtrack from Just For Meeting You)
To The Moon, Pt. 1 (Original Soundtrack)
Nice to Not Meet You (Original Television Soundtrack) Pt. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x458e8c8fdd545c6d0a1d79649617527d8cb69fffaaa1503035654d0753d9cae1. 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/KRA391800034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c6e3974a507e65a298460053e36ee9a067c20a1423d2ea6f6993fda0d90c30. 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/KRA391800038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcafa3235121289f6ba42f07f625defa4acd64917c74bfd05167b8c6792166747. 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/KRA391500048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8055471f40a646241cdc0000a07eaf1769492f1abb7f56bfb3f506da4558293c. 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/KRA392200030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b68888eb714fd1b220c17534d1d8c178eeb02ee645912fab4976abfbf3188f. 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/KRA382103832.