Sarah Lyons Watts (born 1942) is a history professor at Wake Forest University and author of the critically acclaimed Rough Rider in the White House: Theodore Roosevelt and the Politics of Desire, Uni
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 0x825c7051f3033b45bee669fa46529a68300369574af82cb23afa45a23fc5e1a9. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3f0546df-9018-430e-b33a-3764d30ed8d6.json and https://artists.proofprofile.net/proofs/artist/3f0546df-9018-430e-b33a-3764d30ed8d6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Scary Stuff (from Razzamajazz Repertoire Piano)
Piano Exam Pieces 2021 & 2022, ABRSM Grade 3
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 0x017ef9e7afc0d79acedc0a7559816ed8ef6c756833ebeb3a62ce50ce75766fb0. 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/GBEYQ2029323.
Clarinet Exam Pieces from 2022, ABRSM Grade 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7272d3f8fe99191ae0f455c133111bb972c043001fcadde1c7e7a882a1beccd. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBEYQ2170502.
Flute Exam Pieces from 2022, ABRSM Grade 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a928f7a5f87fa9148676f99278de8b6b524c444e989ffb7be407b880f6d5383. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBEYQ2177403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b16f042820a259a3ff3a003d9f9fc4c32c9b605e2af3d2d608de598dea1bd1b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBEYQ2177411.