Sicko is a 2007 American political documentary film by filmmaker Michael Moore. Investigating health care in the United States, the film focuses on the country's health insurance and the pharmaceutica
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 0x7df44c7338b542fc561c6dbdeb987005088d7ffd9a5ed0d5e9a3c927de7857a0. 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/1e5aa50c-b1d5-4794-a42c-fd6c1b71a065.json and https://artists.proofprofile.net/proofs/artist/1e5aa50c-b1d5-4794-a42c-fd6c1b71a065.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 0x792b314401eb779b925fc08919faab5ae31937d07ef22eeed258d0463d4e00a9. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEZC62100765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f792d059ac0bef26df9cc2496c024cdda05cf3282982ac8d3144fc873fe15de. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZMEP2181349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7276b3d33509129bce57539f644c434ea0d61be8c7adfb3470d08e0e9ae26b52. 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/DEZC62268438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba21921d39dfee61c38a8d11579fd570ea12eb3cd0ddbb53e2517ce1ce31ddca. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/DEZC62294862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7747349ff73e809d1b70c4c8f85c35ff1d44d7711aa5dcc64389a3e098927b8c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DEZC62294863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e385f721b7f13667d9847d84047926e22604895bdc0c4e6d3c4c908b0b69e1. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/DEZC62294864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x067c6a63065d108f0a8cb6962fe628bdf501cfc485fcdd927ed1847f50fe37f7. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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/DEZC62294865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ef634901c6c971030d65136b4cfac83e40cb30764d6afb07ab7fd18fd26711. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEZC62332298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796b2da05f624761a06d3040b549db0c2e10de354274655d6c076d24f0aa305a. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/CH7812350744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4334f26e471c4b33b59d8c6aadb7baa7a467017f2f609ec109c9808f3d73cdc. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/DEVX52300123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f5e72013127435f5d8b06d25414d496d9f687230220f77b8746d0a3fcd5f92. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/DEZC62436831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc956cfff69329029dd74dd86c0e70501379cda3a91bd7e3f39f9bb33aeec1ee2. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/DEZC62445736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf851d30405862a10ceb91b01018f0720f8e11f17ba38a15ba87f5ff17ba982e. 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/DEZC62452839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06334b55aedc4ca3311405f6a736dfb2b942575dae5393135efb1c7ef2effb7a. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/DEZC62453185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ecf72e641fe3c0361c7207ab7861e6fdd2c02952f3d57b42093673101ed580c. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/DEZC62453188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x259ea8ce0c48a7d6955a4cc4b8d2776762e1d1c3be7eda4701c887260552f2fc. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/DEZC62570787.