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 0xe22057f352b3eab6d4d3d9c3930a0da2830e979a5b81945b6ebcc351b3148b45. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4bdfd339-4432-44fc-8273-c1c02fe5c414.json and https://artists.proofprofile.net/proofs/artist/4bdfd339-4432-44fc-8273-c1c02fe5c414.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Kids Melody of Science to Recognize Water
Korean Traditional Kids Melody with Korean Beauty
Kids Melody on the Award of the Jeju Dialect Creative Song Festival
Historical Dramatic Song that Makes a Drama Hero
A Sensitive Song for People Going Forward to Dreams
Sensitive Songs Recalling Childhood Memories
Exciting Summer Kids Song that will Blow Away the Hot Summer Heat
Essential Family Song that Tells the Name of Family Easily
Korean sauce, Gather up! Korean Traditional Children's Song
Curious about Penguins' Day! Exciting Winter Children's song
Exciting Children's Song to Listen to When You Leave for the Sea
A Beautiful Spring Kids Song for a Pink Spring Day
Swimming Kids Song to Teach How To Swim Well
Food Kids Song of Rice cake of Jeju Island
A Song that Gives Hope to People who Take on New Challenges
Gather Up For the Fall Games, Autumn Kids Song
How do You Feel Today? Emotional Kids Song that Feel My Precious Mind
Gather Up For the Winter Games, Winter Kids Song
Friendship Kids Song that Tells How To Get To Know Friends
Bright Kids Song that Gives Children Dreams and Hopes
Bibimbap, Representative Food Of Korea! Traditional Korean Kids Song
Spring Breeze Gently, Hey Spring, Let's Play With Me
My Thoughts are Shining! Kids Song that Make You Can Imagine
21 Tree Names Songs that Remind You of Nature
A Song that Expresses Gratitude to my teacher
Summer Song that Makes You Have a Cool Summer
Beautiful Korean Alphabet Children's Song to Listen to on Hangul Day
Autumn Kids Song that You Listen to When the Autumn Breeze Blows
Shall We Go Up to the Refreshing Mountain?
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 0xf645771aadf75279e006c577c2f68db5dabf0646298145fd184291d601163f23. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/TCAIX2424502.
Warm Winter Kids Song like a Hand Warmer
Song for People who Had a Very Normal Day
Kids Song for Peaceful Unification with a Circle in Each Letter
Kids Song that Make you Have an Exciting Day
Kids Song that I Sing Excitedly Thinking about the Teacher
A Song that Becomes a Small Light When You Feel Alone
A Summer Kids Song that Will Blow Off the Heat