Roy Williams may refer to: Entertainment Roy Williams (artist) (1907–1976), artist and entertainer for The Walt Disney Studios Roy Williams (broadcaster), BBC radio continuity announcer Roy Williams
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 0x762b91af67ff75ecd7daa48dc144323aa9447f4b29aacf4fd093274b7c2ed1d1. Chain 2 (Bitcoin): anchored in block 953736 (2026-06-15T03:21:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/983d8b29-97e9-46e6-ab03-241a830a4b9c.json and https://artists.proofprofile.net/proofs/artist/983d8b29-97e9-46e6-ab03-241a830a4b9c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x3f61c6a7ea36becc821c9bfdbf907c49671aae72c2023a5a0bb7d864fe83bf7e. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T12:32:15Z), 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/SE5Q52004161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa909e1cdba04fb3b82c1db4332551fe32725132a09dcc9f29a382e0fd9fa3f78. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SE5Q52200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c07b636f47afd0a2530ff4553ef3fc16c3015ca1a2b010dddc01c67d2542196. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/SE5Q52200037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2af6d86cf8f44a8d5777c12e23ac56c1a275a096c40c42e239e56528cde444e. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/SE5Q52200054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd581b19af5a93b23fa67cc2a41446dd18516e33b8e0c99add52a6fea3d2e442. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/SE5Q52301208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d751193f59437f2d1c11c1518b4ca5b03fac3941f1c54601e198886d93d94fb. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/SE5Q52303248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eec09216e3cbeb602afb5831083240ce45e61004d8ccc886db086b20eacd935. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/SE5Q52304688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6660d2899561d55b158577e05974c6ce19f41d7af070e35601ce780e761e951. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/SE5Q52305074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f318fbd83687870bb3c7a0d014a26e2c1a45b08d9776b34749057691935cf9. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/SE5Q52304420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc00bb15cbe5b2f475ce0cded3cd743b882aeb319134c78a6846a4045cc167f. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/SE5Q52402470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77bc7b454c10d426dd5f4d8c9bd7ec558651a92b2557244aacfab46d8e55c2ab. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/SE5Q52500807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f92a642a95c392e2f05ac240403efc6726e9d3d0a5444c019227b224e52736. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/SE5Q52501575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35fa3b7598c7c63f6444a9ba7e271eee6b45708735a0771d61b6fd7b3856440. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SE5Q52502311.