Charles Mathews (28 June 1776, London – 28 June 1835, Devonport) was an English theatre manager and comic actor, well known during his time for his gift of impersonation and skill at table entertainme
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 0x27d19184b90f819477a4bda5c036be1edc8bd025630e0276165a7ecd41f567c5. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c05b0a32-7d2d-4bb3-9a6d-ad3e21d04a2f.json and https://artists.proofprofile.net/proofs/artist/c05b0a32-7d2d-4bb3-9a6d-ad3e21d04a2f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tchaikovsky Pas De Deux: Female Variation (Pointe Passé)
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 0xde4d592257538181ca07db475733186c8538a68c3aa3621cd7bd92ffe43c4d5d. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T10:27:05Z), 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/USHM21405381.
Swan Lake, Op. 20, Act III: Pas de Six: Variation V (Odile's Variation) [Alternate Version]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f582d7f322f8a539ea36bd186d31870efbdd912a84e06012f01e521de752389. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/USHM91652783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x345f9e63fd7e410e17a3fd5199986488f76e2a93b7f928d123e608f579735cd7. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:35:50Z), 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/USHM91652786.
Can't Help Falling in Love / Stay with Me (Warmup)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5fd9feb795d9286b47951ccf19eda7f75e50aa52a51334bbe294e486dad0d8a. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USHM21744429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08771b7f488d180eb9bd0a03b1dcf7f80a42bc2ffd845699dde2f2d08012da85. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:06:40Z), 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/USHM21744430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb84dbc04ecce55211b9acffa2c0b4714542d6de77acc3353b55ffebba328fc66. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/USHM21744433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c0d8cc63156057e306a47e2d6e8389b8bc884b16885ec9a02544eebd2ad870. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USHM21744437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44625d27bf2e2e45d75432517f077584b790dd2a27ae79c2605f1d7d267376f7. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T16:56:27Z), 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/USDY41850386.
Midsummer Night's Dream, Op. 61: "Notturno" (Plié)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x505bb6b6ca3e1e6140cfdba74e8dd0643e9002b38a9a8af0cdc9dd562a37dc92. 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/USDY41850387.
Die Schönbrunner Walzer, Op. 200 (Battement Jeté Fast)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ef94c144979b66ae8cf8567b8dc734a609400c9b7a549234564001190e9684. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USDY41850391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x458aed1af1411978cfcf50a3c8f2950cbf40f87ef7157153b58739260122f998. 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/USDY41850405.
Don Giovanni, K. 527, Act I: "Là ci darem la mano" (Battement Tendu)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab1ee3674ab93ad664884489a92be1d0f9daf399beed0c425ad4d8e713b0cce. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USDY41850388.
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 0xfa92d1e10aa32f6c0ab3234a624d0b4ae3456695f1c673cbbb1814b9ad529695. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/USDY41850389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5922f94f50b213840ae60be3b96f9c1c2b6f7f64db9ae0677348256c772c349e. 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/USDY41850395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5991431a937d204dd2db664e64ebe87a6590782f37a4a0ca788a8d4f04203aca. 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/USDY41850400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27bf83c93a28e5bb420ad386aff9334e52431fcb006c4eb32e06c2567098a551. 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/USDY41850402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da9877e50b8624fdf9c498a15a0231105ec98b39d7ec4545db4540e5a3583a6. 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/USDY41850409.
Don Quixote, Act III: "Grand pas de deux, coda" (Coda)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x550ebcc31db87133e7a19e2be572121cef2500f0979582a5df54a63ce3a362ed. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/USDY41850413.