Robert, Rob, Robbie, Bob or Bobby Williams may refer to: Architecture Robert Edmund Williams (1874–1960), Canadian-American architect Robert Williams (architect) (1848–1918), Welsh architect and
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 0x4e0b3f99d5831833b76b26443fd918792cd62d7f24dcffa12ccdbd34b55316f6. Chain 2 (Bitcoin): anchored in block 954516 (2026-06-20T07:04:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a13e0633-921a-48ec-b342-0f449b859e32.json and https://artists.proofprofile.net/proofs/artist/a13e0633-921a-48ec-b342-0f449b859e32.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bassoon Concerto "5 Sacred Trees": III. Eó Rossa
Williams: Bassoon Concerto "5 Sacred Trees"
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 0x9ab75c455937436ad88a98c19ccd6bd7832b45aa0d0add1b0a23a50279836faf. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USB8U1514518.
Bassoon Concerto "5 Sacred Trees": V. Dathi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8777afa33fd0dcd9deb418e10d14f91eedd3a13181375c5bc642eb5fa3c6a26. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USB8U1514520.
Bassoon Concerto "5 Sacred Trees": I. Eó Mugna
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf61f21f904efc8f670bb6244b2ee36d5b5218530e4dbbb1a4ef421fed31ce1c0. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/USB8U1514516.
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
Bassoon Concerto "5 Sacred Trees": II. Tortan
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x329a3e4c2b4776d9d5ec1789f20359e8901a10198b10074ebbb0f812f9567566. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/USB8U1514517.
Bassoon Concerto "5 Sacred Trees": IV. Craeb Uisnig
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x311e601b113efb23671618edfe2364586b6949ac8613e9bcacc4656ea95ecbf7. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/USB8U1514519.