Hynden Walch (born February 1, 1971) is an American actress best known for voicing Starfire in the Teen Titans franchise and Princess Bubblegum in Adventure Time. She also voiced Penny Sanchez in Chal
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 0xb137f8dd10fb4a5979a35c41589aef8bd2d78b1f8e720e3ddc713136e40f1d76. 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/95b98152-8484-4863-a991-3d63310590d4.json and https://artists.proofprofile.net/proofs/artist/95b98152-8484-4863-a991-3d63310590d4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Jump City Rock (feat. Nandi Bushell, Holly Palmer & Hynden Walch)
Teen Titans Go! (Soundtrack from the Animated Series)
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 0x8804d6872e7a7241f6866c66a0d2a36bced7bca02b728dbb0d232e25a62e0569. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USNLR2300009.
Go! (feat. Greg Cipes, Scott Menville, Khary Payton, Tara Strong & Hynden Walch)
Teen Titans Go! To The Movies (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c802490aefc2c301076d77442720405d2012aa73fea0c1e9331f20e72f76ce9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USNLR1800351.
Upbeat Inspirational Song About Life (feat. Greg Cipes, Scott Menville, Khary Payton, Tara Strong & Hynden Walch)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x382cddac827bd059f02e1de94329c9861f2dc504982fc28746b47c0b3ee00c82. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USNLR1800353.
Go! (feat. Greg Cipes, Scott Menville, Khary Payton, Tara Strong & Hynden Walch) - Battle Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x655d10ab69f1e7a7fb9aea3e729621630b207810645696290e4447fe5951eed4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USNLR1800356.
Baked with Love (feat. Hynden Walch & Brian David Gilbert)
Adventure Time: Fionna and Cake - Season 1 (Soundtrack from the Animated Series)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f1cb99b64c3bc81fd90492f3a7e513784946927ba566384b5bb7ca689258c2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USNLR2301410.