This & That is a 2015 children's picture book by Mem Fox and illustrated by Judy Horacek. It is about a mouse telling bedtime stories to a pup. Publication history 2017, USA, Scholastic Press 2015
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 0x1f217888c3c794c7d701f40af63b0e797cbc3009251415dadb2e2d710aaa68df. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ceb4c972-1474-4e4d-beb1-abb20cb16ed4.json and https://artists.proofprofile.net/proofs/artist/ceb4c972-1474-4e4d-beb1-abb20cb16ed4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
I'll Give It Back To You (Musumeci & Dodi Palese Remix)
I'll Give It Back To You - Musumeci & Dodi Palese Remix
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 0x06c8a382fc664cf3beaa19eed12edeb7c1683c0e89d40fc0d9363819daca6119. 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/ITSDR2400466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01112ba5aed50eededb9610fb6f80a0ee8d4a26d9e4d4f324a595cc8b6e347d0. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/GBKQU2503943.