The Siege is a 1998 American action thriller film directed and produced by Edward Zwick, who co-wrote the screenplay with Lawrence Wright and Menno Meyjes, from a story by Wright. Starring Denzel Wash
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 0x4960a49d64a49dc3e2763c3e0dda3cbfa79b5715b84337d35e896094df005900. 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/544ae66a-0dbd-407d-8301-3ace614ede89.json and https://artists.proofprofile.net/proofs/artist/544ae66a-0dbd-407d-8301-3ace614ede89.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 0x3303597659d996d6a3d78e98189da06c924a667a7453c543716c5061275748ba. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USHM81952638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea19e1783382de78b1de1aad1f1af9a5293fabd70ca17602e2cdc1587c3bd623. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USHM81952639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8658c0c3a5b35ca24e0aff71e651d88dcc608c228456adda00636795fab70c83. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USHM81952640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04245855dced308c18de5d6203714293a4393c7d044f761212da32ef95571f28. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:51:04Z), 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/USHM81952642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a4cb6e07d1dc8b5db64d46cacc97d9f35b8e512750b3a509ea751eab55ce06. 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/USHM81952643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31041d7942ed28a78c9039aec57934b218d0a597a8a8a46381454167deee7583. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/USHM81952645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef094eab8ad4b040c9ba0905ac979cdd3d3c9859d83bdd1bd65308b83f1ad80. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZFYX2050073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf908b36598d9ca48a85c4b005ac33e9c4776285e0891764db58bb8ce9438f053. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/FR26V2030414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x084f6c0e0309fb93858894a95c3a7bd2d848e1a16faf60c8f2d416383eb02d0e. 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/FRX872153526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb2eae1f2fff72b71f0d4912f80e845b7bd341b276780e25b769c7cd3f5e10d1. 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/FRX872153527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25acf70b1261b5918b6cac33b30de6978b68c47ddf8b585e6b0b6bcab6614acc. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FRX872153528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca12a9f16adf1b4ba07b88f9dc2e75bfb7229224ce008b0136a74d6ed21c3c58. 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/FRX872153529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87570bc5754a77dade6dcae81f31cb29f79edd31bf01be4cd4a71725b63f6b56. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:56:32Z), 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/FRX762287006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9145afd78b3360b1098bb52b3718b183a80bf4a79055a0b2d4ed20342a76e2e9. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/FRX762287009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea0188b428e7051860424d17556322c58a3f19ccb031faf2c5ce5fd593bdde0. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DGA062319125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea0188b428e7051860424d17556322c58a3f19ccb031faf2c5ce5fd593bdde0. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/DGA062319125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f8c6e138eb24bddc40d9b8ae8f6d66cee513949d4b0ca7f903ab02b70976ee7. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/NLRD52325423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b34b9ca2b62e2989800c1142ff61e1b8101cce3298541a615fa2465bdaa51de. 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/INUM72400674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e4499d168fa8e79a0ce58130b867abfa09ccb44870687c0c3ecceda784e6e52. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/USCGJ2307717.
Amdavad Rap Life: 2 Heavy On 'Em, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4615b274fdbffbc502a9b11b35d21927b96704f4919ee5a026a00c23504200a9. 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/QM6MZ2412962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd51e93c6ced501af567044e218724dfee7b743ed3aba391e578fedac61a066a9. 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/USDY42201927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x542fb54819471c952a345b982b4a894937899a97f8c8cf9801054e871a5f2ddf. 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/NLRD51966222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd49e06d2a450a2ef6a2f346ea904b89dbdaa3a491c0685ae800a98690060d495. 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/QM7282579727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff6372db9028179d6e88dcf8e5ce6989154cf32c950dc3801cf24c0aca512e72. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZK6H2102295.
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 0xd529d2cc7a5e6b8d22724c7b2b46f3af367c9c752f55e1ca0843055e195daa27. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/GBRKQ2113477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf93cfa86bbe67f01a408a4882526ebd95af5442ccead05596ac9e4fa7e04227b. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZ5FN2310623.