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 0xe3140e33fb6da6d7a6c3527fd6767ea370a86761a993ae23ffb04e8543eec583. 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/e194291d-09df-42a1-8319-dfed38831805.json and https://artists.proofprofile.net/proofs/artist/e194291d-09df-42a1-8319-dfed38831805.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Ultimate Childrens Singalongs Collection: Classic Kids Favorites
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 0x121ab9891a14ac8a2aab0fd6ddcddec5063a5f08b122f661f62a1ab9097e42c6. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QM7281495890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa682744e18f41e737cc8a361d010df594c8b322730f765bd9649ba32def6c5cc. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T21:01:29Z), 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/QM7281495894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b6bd8e434d49d51880b5a058176214e9d0c899a8c7d4d74c1bba17998fa76df. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:45:24Z), 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/QM7281495897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc3c5f2547347c408c7a930e27728551b13014e50f55e752c358e8deb99ca72. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QM7281495898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x209678ef061b3d8364df21a65a0303ee2c08a572d276ae86a704f4b396bcc699. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QM7281495903.
Noddy in Toyland: Songs from Season One (Volume 1)
Noddy in Toyland: Songs from Season One (Volume 2)
Thank You for Being You - Dennis Scott Intro
Thank You, Mister Rogers: Music & Memories (Deluxe Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f8f7643bd0ca21045fd16f3344cc1e2eebc5b3a4687825017a9ed58e27c52f0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM4TX2334936.