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 0x156e46a2b13e44576d03e8c31abf80c7ac4a5532b654148af39e778c12473c69. 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/bc8ca3c8-956a-4b70-9342-e584172123b4.json and https://artists.proofprofile.net/proofs/artist/bc8ca3c8-956a-4b70-9342-e584172123b4.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
LOTTY FRIENDS Nursery Rhymes (Korean Ver.)
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 0x140f4689b8fcc59b768573479bec047df46f5a49b81f76c4b0db265cbfc952bc. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFU2120931 — a six-check JSON result.
LOTTY FRIENDS Halloween Songs (Korean Ver.)
LOTTY FRIENDS Christmas Songs (Korean Ver.)
LOTTY FRIENDS Job and Career Songs (Korean Ver.)
LOTTY FRIENDS Animal Songs (Korean Ver.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd227bbbbb8e6e375d0169c69ef47fec5f7921ea23ffa3d9c0c2b214725a5fb59. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFY2189672 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x951893ff903947e3558555581a035006fa1df90423a641215736f5b50d3a13ed. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFZ2114161 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3768f357d7569275c07a7d932a02c0f3a479614a80864892d0f5f250b95253a4. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFZ2114166 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9bf8a2343794b5cb3d9340ea9e7c5ae24070821b14b62a03b9978fa234f69c6. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T20:19:31Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFZ2114173 — a six-check JSON result.
LOTTY FRIENDS Vehicle Songs (Korean Ver.)
LOTTY FRIENDS Good Habit Songs (Korean Ver.)
LOTTY FRIENDS Theme Park Songs (Korean Ver.)
LOTTY FRIENDS Seasonal Songs (Korean Ver.)
LOTTY FRIENDS Aquarium Songs (Korean Ver.)
Let's learn with LOTTY FRIENDS (Korean Ver.)
LOTTY FRIENDS Construction Vehicle Songs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7199362fa85c434811d534229af14fd5050d55c94958e8a9a1f66af95d9ead3e. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAGK2257580 — a six-check JSON result.
LOTTY FRIENDS Construction Vehicle Songs (Korean Ver.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb31baf68077445503c706b337ff68e27140e25fe3dd62f8db6ac225d72850ee2. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAGK2270446 — a six-check JSON result.
LOTTY FRIENDS Good Habit Songs 2 (Korean Ver.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eaed081f4aed8c6bc6178c4cc8695a7381d036a63a809c5660c48e7a04be486. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAGL2290989 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0427e561bd2c1dec2f71d6e0ee0e576207372ebb13a412ec36380a34c9d038ee. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAGL2290990 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af142bae960ee0db3d896e3cdeae0007cf679f65706b197deec87295cfc42c5. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAGL2290992 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5c25158ba7b8743fe7a3d48816ef269a89d2173bd5d49b8890d3c3517bd956. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAGL2290994 — a six-check JSON result.
The Head-butting Dino, Pachycephalosaurus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e6dd86508606deb2f841695b52de24678e0ed6c384ebcfa495d6d0bde1033f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAGL2290997 — a six-check JSON result.
LOTTY FRIENDS Dinosaur Songs (Korean Ver.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc996026d75972e4fce99bf3b3a8a829080bcde1bf3183783453de818a56370e9. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAHI2323978 — a six-check JSON result.
LOTTY FRIENDS Animal Songs 2 (English Ver.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6b8be1f8f600d1e9625389f033f176dcfa35cfea2971a4d46417d8e4132e83. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAHJ2321954 — a six-check JSON result.
LOTTY FRIENDS Animal Songs 2 (Korean Ver.)
LOTTY FRIENDS Animal Songs (Spanish Ver.)
LOTTY FRIENDS Nursery Rhymes (Spanish Ver.)
LOTTY FRIENDS Vehicle Songs (Spanish Ver.)
LOTTY FRIENDS Canciones de Hábitos Saludables (Spanish Ver.)
2023 LOTTY FRIENDS CHRISTMAS SONGS (Korean Ver.)
LOTTY FRIENDS Seasonal Song No.1 (Spanish)
LOTTY FRIENDS Canción del Parque Temático
LOTTY FRIENDS Canción del Trabajo y Professión
LOTTY FRIENDS Korean Alphabet Songs (English Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ff1c9a4170b6b553b742eda5d9c7d320d302399deab5ae7ef22f4a05e7163f0. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRMIM2428452 — a six-check JSON result.
LOTTY FRIENDS Kids Funny Song (English Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9407c75e81275746f66e007787513f1ef9ab683c7210a9afe21892d626160f2e. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRMIM2432772 — a six-check JSON result.
LOTTY FRIENDS Canción de Alfabeto Coreano
LOTTY FRIENDS Funny Song 2 (English Version)
LOTTY FRIENDS Canciones Divertidas para Niños
Rolling Rolling Gimbap Song (English Version)
Best Kids Song from Lotty Friends (English Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94ec0dc29c25878cc9bd3b53576fcf238aaec6f12f168d5b1d33bb88ceb4ba61. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRMIM2452233 — a six-check JSON result.
Good Night My Little Baby (English Version)
Have you seen the Bathroom Ghost? (English Version)
BAM! BAAM! Who is the Winner? (English Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42eae0c9accc71ae34f5fca1aa705f72f1e8bbafb41fa8462fe6e197b438d00. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T13:10:36Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRMIM2452433 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c95062ef0d26aa236e5f4e016e99420c4ac19959e9c0001c535030aa099a386. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRMIM2452436 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe5c3b7ef525f5fb6375f39dc460fe3385e0425f0208bca1472b10d76df40e61. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRMIM2452437 — a six-check JSON result.
LOTTY FRIENDS Happy Winter Songs (English Version)
LOTTY FRIENDS World of Imagination 1 (English Version)
LOTTY FRIENDS World of Imagination 2 (English Version)
Grrr! Me and My Animal Friends (English Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x157a288a263773d6c7128b573a554360e11928edac883c67628dc5521c68e859. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRMIM2500362 — a six-check JSON result.
¡Wajaja! Canciones Populares de Lotty Friends!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa289f706dc73ee61dba3cbc76b58ab067f24ea7ef8dc0f5cfa905576c52dedbc. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRMIM2510986 — a six-check JSON result.
LOTTY FRIENDS Kids Funny Songs (English Version)