The Cowboys is a 1972 American Western film starring John Wayne, Roscoe Lee Browne, and Bruce Dern, and featuring Colleen Dewhurst and Slim Pickens. It was the feature film debut of Robert Carradine.
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 0x73063df2d1c8ea09c3d876bee254cd809b35ffce1318721891aae428291be42c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dfc9455e-cd7b-407f-a34d-056cb03ee1f3.json and https://artists.proofprofile.net/proofs/artist/dfc9455e-cd7b-407f-a34d-056cb03ee1f3.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 0x46548291d11ff5c5f6f8735d6ae2805e2d7944519a25f9cab162c75d803d5be6. 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/USA2Z2301147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd801f23295298cf3263d83f3980c13eedbe904337e85a17391575fefb382080a. 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/USA2Z2301148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee739d422916da62c88b769c0c9b0493e46d7c46aff84bbe615477bf1c7f0054. 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/USA2Z2301149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x003d22b071d7a8e1782a9e0d788063597527793b7105e4ce953e53711ca45841. 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/USA2Z2301156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc58e69329fbaf3bb886cd63ffb398a38ec03b625ab4377180384437df4348d1f. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBSMU7663053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19d71b1a8e254b9bfcee78a7e7f6de07df938aecad8e6147a0cbab120edd6866. 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/GBSMU7663058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa18be8f2cb9b58c1ddf97d2fa878dd1ff2ed911c8b6273776d21bd6eec333ba1. 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/GBSMU6051024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb1909788c857dbff052782648bf1321c6070ce92336a4dcd6c024750113a0f9. 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/GBSMU6051025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d9f52597bc39e298510cbe136c76258e7ee2e56367e3e2ba39a402ee9590ae0. 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/GBSMU6051026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3070313ae38a383d6469a94df95875befdb4ed2c8a6e45b6c0d2a7dce5440e7d. 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/GBSMU6051027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648416bb4194d1adf349509b24efc5c3e381e7eb610908b8f5722964e3005bd2. 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/GBSMU6051029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5681b2b352be1558fa1b04ea4ade9e5f93594a0e6513dcca6aa0b697d6433f66. 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/GBSMU6051030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9970f93c40dcbec7bc5332303cc912553c15baa08261151cbb6a507b350c300. 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/GBSMU6051032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a30274a3c4d0b7dbe1904894117ff8854924ef3018ab8f9b6d5da31c9b4c25. 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/GBSMU6051033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323c6d8154d354e9862686e6264b5b13d97592cfc36c95d67f9fe146fa24d05c. 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/GBSMU6051034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f86ffdf6db57fd0dcf58c97ff7b2fd0d3ca471a95ee72d1a949f2a2a123d2e8. 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/GBSMU6051035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c83cd6e0a0feccde675066cb5bc1fffc3453c8b048679924f3c6a22958be3e. 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/GBSMU6051036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5178911b46a3c6b4414690d5337366ca71cbf963a57fe6b00a7277434c849e1b. 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/GBSMU6051037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1736fa062a633639ce69006c648448d39fdac7a29fe5b83e282c1f5e9c41830. 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/GBSMU6051038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x543b8760267fbd5787da3ac98bdc6b06ee83225b1a6a8ebef6d47085c78e358f. 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/GBSMU6051060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad330b492978b66ec9cf404e2869c9442ad48b85876860a9770addba7f145b9. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:05:53Z), 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/GBSMU6051031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf54a66eb88de26c98b4d498af0e17966f62b5f37734d10e79864b36606b9febd. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:50:05Z), 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/GBSMU4412166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd44d4a8456ee473babade746deb2ac07270bf7af62f6a18109e29effe98bc85. 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/GBSMU4412167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f22c6dae22abc080f22a4353c2c694535d09462748c119924fd05e73c11471. 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/GBSMU4412169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50cf0eecd9ddb19716260d8a558ab52ee106c6acc431b3d473da64aac31722f. 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/GBSMU4412170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70ca36e98cbee0c20325a2957f87861b5dee9b8c5cc6224cf34ab14f5050633e. 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/GBSMU4412176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e054ba0a85480333a0bf97057d7e91d5d9efcfedc0a27b75dcf5498a493beb. 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/GBSMU4412177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd06f6a920361494466b27eeb24426cc03acf517983af6cf60e0cac285a07e04d. 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/GBSMU4412178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebe55e1d12eada9d98347f79b20091331011849c325ef7248007c2759febf6a1. 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/GBSMU4412180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9eb889782d0da2870328ed5bc76c7bfa4cd3ad88ee5ac3a8bd39c293b24d049. 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/USA2Z1711370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2035037abf0a20b948a8e46c09073c21c3659917c42f88e77d47b7064ccd935c. 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/USA2Z1711371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa80370456106eae78fe098fe36c1f3fda551e8a085c2c6235c0ea9e162d2dae. 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/USA2Z1711373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bbe6254fc9226fdb1483e9f40eca34acca4603fb3a92a297e1ab06509a812a6. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USA2Z1711376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18fd07f5522d31cb228a001afa9c7420342b5ed84c3266fb3d6a857296f8f892. 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/USA2Z1711378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9710d89d2b8358ccf245317da01953d32ef99ae0e32cd7fa1772627e57185b4b. 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/USA2Z1711379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11518d35151c786f7e81b3498d804aeca1d43033c8ed1611e269111deee8ca10. 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/USA2Z1711380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f1ff559aafe5812b72fb5392ffd8a0c312b83c11dcd5f5e09f3ad36fa04443b. 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/USA2Z1711381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46548291d11ff5c5f6f8735d6ae2805e2d7944519a25f9cab162c75d803d5be6. 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/USA2Z2301147.
Polish Sausage Sauerkraut! - a Collection of Gizmos Covers