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 0x180b7d7a1751d6b4024dc84a4e5df0294f02a2d0ae0b514db475831298dcb91b. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cafba9b5-c4cf-4ad1-9878-346720625de1.json and https://artists.proofprofile.net/proofs/artist/cafba9b5-c4cf-4ad1-9878-346720625de1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Spy Myung Wol Pt. 3 (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 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 0x508aab9aa319fc9dd80f707319aea3da4dd6440860a8b682c4f1906d09fa9bcb. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/KRA381001884.
어린왕자 The Little Prince - The 1st Mini Album
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1fa803fb4ded54766977379c1dd06b585941dc491bac8364ec33a717a026f9a. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/KRA301500728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058612a104295a424c5495cf39b64523ffbb15ad2c7ae296c5b7c77d83e5b355. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/KRA301800556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10684a1b19093cab6d080979a56945fe340f5ad78fcf664b92233127fe5e398e. 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/KRA301800568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07fab3b68ef9cf7a1beca081cab8e0cde1a32fedff0c744177c26d9f2e9c5147. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/KRA301800569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7209420857dbd7787d7d0255e3e413c147f4a829a06cc6272edfa3025eb7bd4e. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/KRA301800570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1942f3b29a4253c43ac89194847b1c3728140d854558c8e2ebf7f9cd64570756. 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/JPB601900965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd659f8d2b2266670b91c3bfe46cca1832b325f151dacb8dcd824b5a99f89361. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/JPB601900966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef1f111ab758a02a9775bb80bd81d22df4b959b967a89f364970b1a446662548. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/KRB472001374.
Youth of May (Original Television Soundtrack) Pt. 5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c561ce4a97f5c9a493c14875c3c0707696063a79973d0cbb14425b80a4caab. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/KRA302200080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8437a0b4e6542a147638e760d51ce2a39e943c616f79c700c866b1f50f22e8. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/KRA302200083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad4d2fbe91f268d7ea44c072a2cff4332db42acb9287883ac83240fc0734e585. 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/KRA302200084.
It Was All a Mistake OST Part. 1 (Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557fd2238b8bafdc642482d5c721f530648d6c4158788fe670664939d6cfd120. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/JPB602203815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c9e350518204a6f97108ccda08f3a7fca61359cec76bfff981c5fcc49407cf3. 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/JPB602203816.
It's okay (Orchestra Version) - SM CLASSICS X ARTIST
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7270b7df81705ae126ff9be71ca15f81ed1e47f15998a256c8cebb624de5a1e6. 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/KRA302300517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc52b14874c6a544ea969eca437c91ff68fd62c66be91e05a1b5193e748849280. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/KRF702400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b394ba4bd626aeea14f6f13a8e48038c9f6d403be73ead9ea31dc75d6f4cd17. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/KRB472400205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x277540f2baf404c2a545089234688c2a71b136a5886a529100d767e80f376acf. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/KRB472400207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6507c33c2878841321c3b22020d2f48788b9b86327f035807994815a73b1c3. 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/KRA302200278.