A Foreign Affair is a 1948 American romantic comedy-drama film directed by Billy Wilder and starring Jean Arthur, Marlene Dietrich and John Lund. The screenplay by Charles Brackett, Wilder and Richard
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 0x39ab933dc6bd287930ee8e4070760147f4bb228ea28806390a20c788453cff1c. 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/cdad2392-c3ba-4ee6-b1ad-f8a8dcc80885.json and https://artists.proofprofile.net/proofs/artist/cdad2392-c3ba-4ee6-b1ad-f8a8dcc80885.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd75b8ad3431ed31ebf502c00604396a430b7f4cac4645a7b3496a74d77fe75c2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM4TW2302017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6976463f6aaa13e8e75974dc6208cd47d845d48316a936c8cb705259183c74ab. 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/QM4TX2353966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1017f35c696034bca9393b86932a54deaa7dc82f7455401ebd553dc7a2640427. 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/QM6P42309346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6059a15d4b54ac378bc0545b8380937427720371226574c5f34c1e9997d52dd0. 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/QZAKB2200679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x365fa1bf8cc36ff8cf1e3b6918bc1837de4d6faaec417720221e76406c8d1a23. 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/QM6P42309353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb9c6747b7dea201e2feec6985b8f800cb1e4982d68b0f801f5e73046aacf98. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM6P42309356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1695cfc6a24e5d44ed38427eb20a068e78f490d4135afe9f97289df118cd98e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM6P42309362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7248c33c5256f1d68ece667e91c712450daf3843387e061be03f26a83f50e3b3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM6P42309370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8097083d7271cf8b9fbe772dd7f2d98bbf106ea1b8867eee784f1ca345332b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM6P42309375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd44b98635a66bd62dfc9cd741254594c67494833ed04264960effb0b2c7e89a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM6P42309377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631d21e11d4cd2b606e65ef59496283bdbcd6205ba828ad73887dc27a6abf7a5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAIX2488928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a7585790e3d11543377092fe2f4c1ee5c2e2b38997b2fe6424700de6ab5f394. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QM4TX2477004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6976463f6aaa13e8e75974dc6208cd47d845d48316a936c8cb705259183c74ab. 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/QM4TX2353966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd75b8ad3431ed31ebf502c00604396a430b7f4cac4645a7b3496a74d77fe75c2. 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/QM4TW2302017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6059a15d4b54ac378bc0545b8380937427720371226574c5f34c1e9997d52dd0. 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/QZAKB2200679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd75b8ad3431ed31ebf502c00604396a430b7f4cac4645a7b3496a74d77fe75c2. 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/QM4TW2302017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6059a15d4b54ac378bc0545b8380937427720371226574c5f34c1e9997d52dd0. 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/QZAKB2200679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x782ea9c6ca6afa047ee45387ed7e58a27e30c20b72b6fe7aa8d4da7f92e9b4a8. 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/QMDA62124026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f5fbd7e0aafc55d1f68286ac539edbe903beffefff8e20a3f488926d88eb9e. 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/TCAEP2083276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc65961993b13c3e8fcdd5cefe50fa6f1f1dee44d42ca6861ccd8017931d46f40. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/QMBZ92009204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f8c8bc9fb7d3e5286094831d6b784d62b4c8a192f05c331c6d921b645f2e74. 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/QMBZ92009205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ce3d1b685f0fef77af41f4a2cd384710d7aeb30ed0de0ee061035df3cfb492. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QMBZ92009206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ddd46668785af12a4c1e1bf47f75be7cb692a607f265552240957180ac467e5. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T10:09:59Z), 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/QMBZ92009210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc65961993b13c3e8fcdd5cefe50fa6f1f1dee44d42ca6861ccd8017931d46f40. 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/QMBZ92009204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x723c823f3d8be7cd7679042ece1758aa8e950d43d053001d9467b28ca02f89c2. 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/TCADI1715060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f89fe89105ddd16e4db46fc3d2a9b0d1b8400619d1dee38d61ee585ba9d2a58. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCADI1715062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf523dddda954e339c8c704486a7ee861047fcc3cd6dee65e4c8f932bb30d9243. 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/TCADI1715065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67aa4776d884891320305562816069bcc38f2595c4efb8881c68f2f5515238f8. 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/TCADI1715067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb359f3771774a105524e897c1d7a79aef3c13412ad3be74236ca8b67cb244878. 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/TCADI1715068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fee286166db1ece0041f99bd28243da0e10ab46abe24db434d17f7a8156ebbb. 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/TCADA1700259.