thumb|right|240px|David Letterman interviewing Teri Garr on Late Night with David Letterman in 1982 A talk show or chat show is a television programming, radio programming and podcast genre structured
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 0x4fff61c2cfa405be5b0655dabdd99d7d9ff4f31dfe0524fbd478b81dbc505395. Chain 2 (Bitcoin): anchored in block 953730 (2026-06-15T02:47:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/950d73ce-ae44-4822-9e5f-ce1becd7355b.json and https://artists.proofprofile.net/proofs/artist/950d73ce-ae44-4822-9e5f-ce1becd7355b.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 0x2fe7b02065ff4c43401f8a3e504dab02d00fb950dcc5245c40c4bf234c50e2e5. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/USAT20103810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc4cae9c03abedc5705fd067b22ef2c754ca662c2252d2b95f354341d543c03. 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/USAT20103809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4accd8f8e0a96ff1b526907c2493c9199b9106793d9234cf5dca25da5f62e81a. 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/USAT20103812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e6f86844aad7254c6fd7cd52d94035a55bcffeb433a1a4d78afac1a0370d10. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/USAT20103813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57fe2f5a72ebc0d8f57b9b05b6bfd22873003b6446a2d3a8be4ec81f4333cb41. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USAT20103814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc344f39a59a131a2953a6dbd8da789b62b807268142bcc57a57e3d6e9f52e6c. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/USAT20103815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb460fda0af607152da8d7277ce6c6c50d3d1c26e75a2c4eafaa87a14664589d7. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/USAT20103817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce3c778e931fd436b9f734580a9edb3d7324bf55f889160b5c2bd12177e36f9. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/USAT20103818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84796c12c64ba1b96ffdffba7603822fbee02d8e8d55cd93b4df5d8473ade54. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USAT20103819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361763286ee7ddd7434269fbdddf9aecb666fc7e9947119087f9a0bccdaab33d. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/USAT20103820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de4fdf772c97d4999962aa975b84d9bed2b0cf1948a05a5ea9d709bb2994f5e. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/USAT20103821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb460fda0af607152da8d7277ce6c6c50d3d1c26e75a2c4eafaa87a14664589d7. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/USAT20103817.