Jacknife is a 1989 American film directed by David Jones and starring Robert De Niro, Ed Harris and Kathy Baker. The film focuses on a complex tension between people in a close family relationship. St
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 0x18bf338dd17b0b327de8bbef9dc6acc69b26a8ff3edc498ac0198c29d2b9c7b0. 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/af531644-25c9-4cdc-b97c-c6c71712c571.json and https://artists.proofprofile.net/proofs/artist/af531644-25c9-4cdc-b97c-c6c71712c571.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 0xb6bc5af4831bc957671676a35d310650d7e8628e2659e14d5f20f6d0dfd07fee. 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/CYA112000832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdab1b6eedb267650612d46e521ef947c3b2b7b7e0e7d8adbb45773112361ac86. 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/AUMEV2161296.
Outcast (with Fivio Foreign) [JACKNIFE Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf8c4eb90662d46bbd4c593223d93bdfec37785114cba1722c27581984fe4f23. 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/CA5KR2516497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78196564310068c6e065fc88cb9238b03c70c98deee3ecf5557c64d5b854bac7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CA5KR2511748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf8c4eb90662d46bbd4c593223d93bdfec37785114cba1722c27581984fe4f23. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-21T19:00:05Z), 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/CA5KR2516497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa27d42ab879b7d59ec97390488d8d72eb8ae1bd1defe2b76c255c31d701bd068. 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/CA5KR2517046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1280d59f56b0efe0b96748beac3f3058ab5b6765855bd9f2c8ebda1adb9806d4. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GB2LD2410558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae70e8bd0f2694f1bd83dcbc9d3739aa728e90c8909bb5886887f6637451b70e. 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/QZE6V1800125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276e0fa179704513a1664fd52077d603af7e9e60d9ebd738cdfd033bb9c5e6e0. 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/QZTGW2400787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c605f3865afbd4ef69627dd38c7fdf10e0d392046743ceb4a414dd642b155c. 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/QZE6V1800124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbbf49cb2755fc2a690874536bac3c17285b02b085c02f730cf33d6ca1b40329. 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/QZE6V1800123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca37d9a58f6445f33095536b2ea4c88bc19e5f7951d8ddd3acc2119d55d7c0c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CA5KR2454223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4502088926ddc50e951f29dc63cc4e899189d9d49464adb6b2d3e6f7e79e25f0. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:58:52Z), 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/CA5KR2454222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268cf7409b6ae7f1c9bde39ac544db4157ab7b4dabb457f23011b66a26cd0ce4. 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/CA5KR2420296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6121b2faa3d712a8b1e6553c00b42c1a6c282df12fe31f4416ea70d99b833725. 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/CA5KR2438509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268cf7409b6ae7f1c9bde39ac544db4157ab7b4dabb457f23011b66a26cd0ce4. 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/CA5KR2420296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f76ed0fbb2a7173e72258e279bb2c0caec4b8bf3a420210e12b2f263a75d86. 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/CA5KR2397151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc377aa2f52ec7c39e32954ca1e0edeb80dd9cbc94c7561fb94814d673d1082ea. 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/CA5KR2385169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x656e7aaf79a4f80f6d030dd781ab4d05a33b6799c38dad7a6cc80ab81e74f672. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZE6V1800122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e5ad78d0b64aa0b28799a3589baa65fc121e62b73211ed7eb0c6b049bb51d1. 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/AUMEV2347278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e454f2e4c4ce64506d0707d2626ca49bca4960d324a2dccabe784e201d07d88. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CA5KR2320849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d6b9e3ca39fcc471da141469d5d1439e65a1ee2e21cb448d16de053ab77b45. 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/QZE6V1800116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f42dea7d4eca978b3644f24560084f021f57841edaaa462a3a4bb76c724b68. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZE6V1800115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d6321b02dacd3fdff6d8ae9f34964b5da401e351d28179f9ebbdf6d9e55eae. 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/CA5KR2235977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6376033e62140beeda11805d6203ed222d9b49442c1065f73a5bedfa6ec0e0b2. 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/QZE6V1800114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c1455b086423021d766d7d7c2186a078d5d91ce0dd558f1459a5b9d09144224. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZE6V1800030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3b50626c6c7ec42f1592c005f7b72e5318ac32da9ee8e06335eabefa7e82fa. 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/CA5KR2201313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a13191eeb6cfa176c0de3018836ed611e37e5f91b1441bbf393c694b872901a. 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/GBKPL2168489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e44dc22b9c78f23e30283354d4827dd9a6f99d86374241ef60b8aa6c01eb4e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZE6V1800110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa70fd66d81810df2dbb6c1f826af597a212171e41e0507a7219326b208da4c30. 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/CA5KR2167340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf97b6631b1723411d8b89c43cbeec51aa9bc0ed17376e933d6575a3376f82f11. 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/CA5KR2107550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac5534e7af593361208b8cef81ade66e67c19d2efcaafe602c5107b8aaf18b0b. 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/CA5KR2020195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1280d59f56b0efe0b96748beac3f3058ab5b6765855bd9f2c8ebda1adb9806d4. 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/GB2LD2410558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdab1b6eedb267650612d46e521ef947c3b2b7b7e0e7d8adbb45773112361ac86. 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/AUMEV2161296.
Unidentified Flying Objects (JACKNIFE Remix)
Unidentified Flying Objects (The Remixes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4edaf07b335fcda1888ba97fc49599043e35c42c441927dc5b1b7b17cb2c2bb2. 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/QM24S2202430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc6c11e388435f6e1683dbea0a189a2e2d4c3b3747e525f8227d389d026d1844. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/CA5KR1964801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e454f2e4c4ce64506d0707d2626ca49bca4960d324a2dccabe784e201d07d88. 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/CA5KR2320849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a3a7a71637248d4f00b63d912a28f61fbad7722baef46a7dda5cd9498603dd7. 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/GBSMU5003765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf97b6631b1723411d8b89c43cbeec51aa9bc0ed17376e933d6575a3376f82f11. 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/CA5KR2107550.