Sir Charles Spencer Chaplin Jr. (16 April 188925 December 1977) was an English comic actor, filmmaker, film editor and composer who rose to fame in the era of silent film. He became a worldwide icon t
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 0xba0a502f104c1b11ac93fba11ca499db20263d500df48608c739de0f49e9a17c. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0242eb82-8585-44fc-855e-cdd561d0d74e.json and https://artists.proofprofile.net/proofs/artist/0242eb82-8585-44fc-855e-cdd561d0d74e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Cinema: The Silver Screen Classics Collection
Modern Times - Theme - Arr. for Solo Cello
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 0x63401a211892fdd52961cf9f44b0ac38e58c3c00fa0fb7478ff544a11da6dc09. 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/FRZ132010170.
Charles Chaplin (Arr. by Marcel Peeters)
New Compositions For Concert Band 25: New Wave
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f6eec1260c28431898100aef2dafce6742802aa6489488ac65165a508d20185. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/QM6P42075182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf28ad189ab4cc00bfb63b7c35477c446451af8a166273ae41523775cefa918. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USSM11203796.
Smile (From "Modern Times") / Ton sourire est dans mon cœur
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a0d8a96817602eb09648269675ad13331496e85d8028b0153dcd68440128f0. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/USRDG0310008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a6e3ba2717e699bde5aebb36d68da296d648ad8408bcb0aa1ba667feba0078. 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/USSD11500213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b6baf5dbdb7bdd862af6b3b7e06113b03ea027118c96ca7d141f23f4ee77bf. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/DEE861001514.
Smile !!! Works for Double-Bass (Arr. for Keyboard and Double Bass)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x241411a0b40baf333942edf12859f320d7ef1daa11ee7aea7bae9c2a45b518f4. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/ATMA40800158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf28ad189ab4cc00bfb63b7c35477c446451af8a166273ae41523775cefa918. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USSM11203796.
Modern Times: Smile (arr. for cello and piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856594d8dfb1cb4c8438eeb3445dbf2a4fafaae10a3faec9d15a260cfc242380. 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/DET901222018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a1b2a51f726904ef7e6444251dc015e11471c30f78b8b43d3f8c2e87dba499. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/GBCJG1000049.