thumb|right|An infant lying on his stomach. Tummy time is a colloquialism for placing infants in the prone position while awake and supervised to encourage development of the neck and trunk muscles an
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 0x4e7b6e8ebf88d35bad0d71963f51282c47f7fccc0c7df7a906cc97d239de935b. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a40988ee-1d95-419c-a3f4-d1ef9ca00f19.json and https://artists.proofprofile.net/proofs/artist/a40988ee-1d95-419c-a3f4-d1ef9ca00f19.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Nursery Rhymes - The Wheels on the Bus and More Children's Favourites
Nursery Rhymes - The Three Little Pigs and More Children's Favourites
Nursery Rhymes - Humpty Dumpty and More Children's Favourites
Nursery Rhymes - Jack And Jill and More Children's Favourites
Nursery Rhymes - The Teddy Bear's Picnic and More Children's Favourites
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 0x9de3723be2e2c9e863964622c48180f5114425e008bcb970abe9866d607c1007. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/CB2CY0933435.
Nursery Rhymes - Twinkle, Twinkle, Little Star and More Children's Favourites
Animal Songs - Fun Nursery Rhymes for Learning
Number Songs - Fun Nursery Rhymes for Learning
Shape Songs - Fun Nursery Rhymes for Learning
Colour Songs - Fun Nursery Rhymes for Learning
Tummy Time Tunes - Baby Songs for Your 0-3 Month Old
Tummy Time Tunes - Baby Songs for Your 3-6 Month Old
Tummy Time Tunes - Baby Songs for Your 6-9 Month Old
Tummy Time Tunes - Baby Songs for Your 9-12 Month Old
Big Feelings and Emotions Nursery Rhymes and Songs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8430f8b660442e827ad7cbd35883ad253fb0189d2c09c574e9c99fe16a6d21f. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/CB2CY0933935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc57a78b4c96f26a320565ea1f613935be18b94bd3249c8752aeb6a2902301ed3. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/CB2CY0933953.
Kids Christmas Stories - The Twelve Days of Christmas
Kids Christmas - Traditional Carols and Festive Songs for Kids