Anthony or Antony Williams may refer to: Government Anthony Williams (diplomat) (1923–1990), former British Ambassador to Cambodia, Libya and Argentina Anthony Williams (Medal of Honor) (1822–?), Ame
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 0xfb173516f05bc607c8b35acfd2782623405cb8a9fa0b126328523ac4d1e480b9. Chain 2 (Bitcoin): anchored in block 953777 (2026-06-15T11:52:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cbb96878-169e-41f1-8b6c-06fd11acab6a.json and https://artists.proofprofile.net/proofs/artist/cbb96878-169e-41f1-8b6c-06fd11acab6a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Piano Exam Pieces 2019 & 2020, ABRSM Grade 2
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 0xcf5449be44bf90d21708be6fa8079a913d7d84404d1be7be6943ed0eb5c01020. 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/GBEYQ1627001.
Die Zauberflöte - Arr. for Piano by Christopher Norton
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf340315a1d200257e6a3d97dbf13e0e8620ebb31f74d1486345cb40e829ded2c. 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/GBEYQ1627002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa753e453f7067dec96e9e408adb0b8d52992743825c6777b7318ed67664e56. 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/GBEYQ1627005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe02596b92efa17865592835199110d6b66d76ad87b0678a404b092d3c72c362f. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/GBEYQ1627007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e42fd22d7fa0c20081910822f41831b29991ea4440cf96d7d74cd7da456b5dc. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBEYQ1627008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea21a3435c8afe59421cc34871c363c6626a8ed66d8a07afc13c5208d1576974. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/GBEYQ1627009.
The Planets - Arr. for Piano by Quintus Benziger
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c91b350a5a078070f6a7634de02ccabbd6e914661dda4c7feef055ece93005. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBEYQ1627012.
The Piper o' Dundee - Arr. for Piano by Richard Michael
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c8baf411ec96d888650dbb0344635e27ec64b7e9851505a4a3734e8b6fad8c. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/GBEYQ1627013.
Peter and the Wolf - Arr. for Piano by David Blackwell
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64564d3b07bf3043e9aed894da12a5bb45f00351f525983047a9d55f8d237e7. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/GBEYQ1627014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f623829c0330e3f239bd76739ab51a47d889647a729d48e34739405e83a356. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/GBEYQ1627016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b86c68a2ef80406233a65cb57b04bcdfb2b0133673751b146d391db484d9e6. 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/GBEYQ1627017.
Piano Exam Pieces 2021 & 2022, ABRSM Grade 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d9228057f51e5231eab10483c8cc454b1ad4f0fc13c8e05531463e6f64b9f2a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBEYQ2029311.
C:11 Can You Feel the Love Tonight? (from The Lion King)
Piano Exam Pieces 2025 & 2026, ABRSM Grade 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe13212c800fd7b7b7a9be5f6bef8f4e37afefbbb39ec32ef3c7d4a49d365c791. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBEYQ2453843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fab7cf70816bae7d887758b04e93d536c5a005d34b847ec95482a7608ff08a1. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/GBEYQ2453837.
A:11 Moody Gigue (from Piano Sketches, Book 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6b3239c2df58d8dac25d844ab99e9c478cf641c6dcfcf79e942a9a1570f492. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/GBEYQ2453811.
A:15 Jazz Etudiette (from Easy Dances II)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced70f769b54c44ac982ae0d9d558e428826e5515df147df8419419aedb5e2f4. 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/GBEYQ2453815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc22e07870a5730aa7430f43eacedeaa3dca6211756914506389643798b965c0. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/GBEYQ2453825.
Anastasia (from It’s a Piano Thing, Book 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9ba080c349a29f6be512fd37f54191e73a42c2fd4f2e4477818922b516e50ac. 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/GBEYQ2029313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfab552091986ff736db94992c7de6554ac6e2fd537b908b7ecce9db4224d262. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/GBEYQ2029303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f9ea0af47e194b38fd255f6b43b147d14b5a2b576bc92490122bdfeb987ba4e. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBEYQ2029321.