Big Nothing is a 2006 black comedy crime film directed by Jean-Baptiste Andrea, starring David Schwimmer, Simon Pegg and Alice Eve. It had its world premiere at the Cardiff Film Festival on 18 Novembe
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 0x184de9eaceb4cd9b381801c7cbe89b42123fbe12a59abd0874211c217345c03e. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7124e9a4-08d7-49a0-97cd-dcadc5e8ded8.json and https://artists.proofprofile.net/proofs/artist/7124e9a4-08d7-49a0-97cd-dcadc5e8ded8.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 0x538da019005363880c9e26d0d40a01e78f37700cfbdd5b5f4ce8d43a6eab3967. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QZTUL2208201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb11b3a54b5709fa0cf6272a84b1ee00e06dbe37dc92ba5e929da1ad4a9659ee9. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZTUL2208202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36fa79cc67af45a150348e59e60b47eb88d67e2b2f8df61bfa06b14d4b08b989. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/QZTUL2208203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf0eedb410239f4309c3a7a4d90a238a4fa222c95a67be79cdc1fbd291a55ba. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QZTUL2208204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7663581dec1b66d323592ea7c62a6f74e9471fc6c5d66cba107e8a25acffe88. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/QZTUL2208205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02bdcebdd9de2f05d5f0ecf111a8e808fe81e8006c56190aeefb0deb0cd66e59. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QZTUL2208206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef09216617922739b2ce911b2a0976f0d601357f36ee428f4df6b232c2c19d33. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QZTUL2208207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x574220259be3c3e6ad74a8c0427df0d182a207e2d8fad7fe080ba77fd152d7dd. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/QZTUL2208208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b71c73e211bbde1cafc05c2daa9520a25205c14ac8f9051b2f3048afda720c1. 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/QZTUL2208209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeff2a77a98b2a1ff1ca7465dd6d4ca7efdc09e10187eb36ffb655ebd53a313c. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/QZTUL2208210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa976de70fd5a10122eecdf28bdebf0931fbc55e90a9a21a9aa6ebab030327932. 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/USA2B1900915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4955b6b5d9e695a9339cdc933e83cec8372c52fe189127e66c79bcee0b1d4f1e. 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/USA2B1900916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda3b3e1f39a63aba3691b71c2a8caa617cef3b1af9188a1487a6a4b42b261d1. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/USA2B1900917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce96367d318ea7508254a9acbccb770c495794256c5da1750eaea133aed9bd4d. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/USA2B1900918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30402d3f2f824e671103e622f29a5a93224876c305432ce3056657582e02afcb. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/USA2B1900919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x112c11211948df1cf5b68c04dbd78dd21bd6d5c4e159396ba3ef511a5c0c33af. 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/USA2B1900920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c58495a8e1cacae69ef0bb97ca297b95017997d625bbbfb9593d1ed8a946344. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/USA2B1900921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9afa06a046363fe086802c6b8e47a3739dcf04be598d1410202e13a8a1c25a9e. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/USA2B1900922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33981f53528708ace0eb9cbb864537476e9970f8652d6a0beba913bc732af34f. 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/USA2B1900923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c6b8dce27b878ed54dda2294920dda9a91a509e419a88f404f69fb6d8136e75. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/USA2B1900925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa404d90f7dd276b2b9a4f34815920a941ec9c388a452ab0a13366f1aa462560c. 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/USA2B2011415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda467bf6d96b39d17bcea999ed383637f1fbe74012e52ff399b5ae552bbd300f. 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/QM6N21748331.