thumb|Tompsett in 2007 Oliver Tompsett (born 25 August 1981) is a British actor and singer. He is best known for his work in musical theatre. He originated leading roles in multiple West End productio
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 0xa40a9451a15bb6ddf60790be843efb3f161b8377bfc21cb5709db746029db6b5. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/641b56ea-bc02-4f4f-b4a0-d4e5d89c36b1.json and https://artists.proofprofile.net/proofs/artist/641b56ea-bc02-4f4f-b4a0-d4e5d89c36b1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Have Yourself a Merry Little Christmas / The Christmas Song
Christmas in New York (Original London Cast Recording)
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 0x02d1bc8a9531eb538125f21ca77f4a36a513897d3d71624fc218b62e3dea63a1. 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/GBYQT0900047.
Cynthia Erivo and Oliver Tompsett Sing Scott Alan
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e072962e7e1b90376809e1b5671474a6e60c26d9cf8b3b15d210c6619961fd0. 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/USHM21555225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe943a9da9377d983fd2d5d096eb7e6cc45de37251816b71846e3c13cf191807c. 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/USHM21555227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0acc20aa1867cc6db66245affb2ea24435c7a9f68a0bca6cc8cdb708a5f01ca8. 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/USHM21555229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x774a6d1f994fd01a5cc0e3bc3e0301dc806ee745c9f88fdc042379b6ebf00759. 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/USHM21555230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a12bc06a6d1c896b927805dd491dfd61531959dcf051e3f099fd6abbed6ffc. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USHM21555232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52424ee997cbeedf2fd854c366db9c6be720ccd73b76d4190670a4601395e8e1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USHM21555234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99137d0093906735534c43b9769aacbec5bb19819ba3519369df931846d05c11. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USHM21555235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf6b1c5d1d65f10c36c8678064838e0d335af8547a96e701ba723e40ab98c835. 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/UKZVX2200129.
Greatest Hits, Vol. One: The Songs of Scott Alan
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e8927c3069b1bdec2d86d9c4b25569595c016958008b766c80db62d27c71e4. 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/USHM91448265.
Golden Key (feat. Oliver Tompsett & Jon Lee)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba6f80d6dc77c0e3ce7b077fbfb0bda49666b217d2cbb88bf04edf44d5279292. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBGAM1300054.
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