thumb|Workers and cattle in a slaughterhouse in 1942 In livestock agriculture and the meat industry, a slaughterhouse, also called an abattoir (), is a facility where livestock animals are slaughter
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 0x35165ede7b6495b7b2684c8520bb20021b3a6bd8f76e78978a421b929ee1a00c. 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/4c6a387f-9e7c-4316-8d1b-e69a8e12e044.json and https://artists.proofprofile.net/proofs/artist/4c6a387f-9e7c-4316-8d1b-e69a8e12e044.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 0xb4beb0d63b12a71bbb050319fa624d2f0f59666b131fe14b1ddff2ce3ab2a646. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-20T12:07:07Z), 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/USKO10901371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe728ec9826ec14db27805a66b9b58c7ea0d16bd9dc5f202e9a49b06b90e84de7. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USH3G0701809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb50e2b365565d35ea1af3b4855db7bf56f3df1edb5a1a08b42559b65fb5862. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USH3G0701811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aedd9d4d4f2f26cfeb5aec469b08a90fe53153de48bfe9237b6842656f3d356. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USH3G0701812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x423d076fce89d3346e84a2f9010213b75b075c3fa702438602eae358c85f2758. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:18:29Z), 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/USH3G0701814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf36cdc19dcc34c4457d25df8dd33f6200b8189b9d2126258c7827d2d1c0842bb. 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/USH3G0701816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x807edca208ded2f68802db14ab3aa422215719a079ba2f4197254ed360553fdb. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:29:33Z), 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/USH3G0701818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d909e72c9f592da969e9d0b0c45773e4e0b17ce1a6e324b4ac6a925491fa47. 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/USH3G0701820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x927a1484f488e33a5f60143a3b2cd07dce913d6ede7c4da7e66f348779954e44. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USKO11100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25179ff293f18a6274c8156c563c9e4ef19af4dddbf85a0b193158c029c6869b. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/USKO11100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61007c231874504779bb8676a95647dc0eb2593be351126e71f5bb9ce84cdae9. 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/USKO11100018.
Put Some Money On It (Remix) Feat. Sheek Louch, Jada Kiss & Styles P
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbafd7415d44a491ab8e71b79f43e524cf344689d02b0c2c1b10d5fc38cb13708. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/USKO11100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06183d0aade7580a99dd60af33f8cac0592a78fc8841fde61647265aaf73cb48. 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/USKO11100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b1196590e9a9b77286a96cff0804718add9584b0810ad0e49057b024dfadb9. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USUM71207972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe698cc0f6e8510082cb741ef4f136eae64dd45d0123c43cbea8bfd924420681e. Chain 2 (Bitcoin): anchored in block 957961 (2026-07-14T05:58:47Z), 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/USUM71207988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d83dd37e18da982cb5126502730020679329934eb7d321e9895211238cb5395. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/USUM71207989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb70bd642277f154d8b6d7ae8bfde60196fe294e11e568434d8e70ce206390ac5. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USUM71208001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc5e6ced5a4f085754714a32cad672bc58f230b5cc576476c244a8ce30679674. 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/USUM71208002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8139a6db4905091ed04e587fd5943c73dedd684226971c9148f60dab3397abd0. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:33:44Z), 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/USUM71208005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde3963bba3914b37d54b1e503b5a5a5277093d0011a3099ac9a6c8f6e97ff80. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:50:01Z), 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/USUM71208449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83891ecd1f55832dce839938fc87cebb951c43472800233676f7eb46d9bfd240. Chain 2 (Bitcoin): anchored in block 957868 (2026-07-13T14:56:55Z), 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/USUM71208451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7c5a7053f0ad613b7cb6d753adec83b70eebc5b044d1941996994c99e8cf05. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/USUM71207971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d440b4396833e15a464964ce72788412eea24a5a36837f4d6af1b284a2f191c. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/USUM71208597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b0ea14f6e211e0660a4fd528d7805546cf0873b786648ec5c266d86de056cc. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USUM71208765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c77d12710bdafdbea83b6b6f34ec6ee1db25afe57bdad02b6d8b06b222b40c. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/USUM71204401.
Give The Drummer Some (Explicit Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81e6089aef990976f26b0d80bedd73a93ed7a65ab4e0562244d113186073b48. 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/USUM71101891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81e6089aef990976f26b0d80bedd73a93ed7a65ab4e0562244d113186073b48. 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/USUM71101891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4afe0f5a9c44beb1189260be7b1a84fe5ad1a788149613f6e84bba3e11e94a6a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QM7281490055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b1c6d0864e591c7d80236903e470aca70bb2afe7bba88c91babdd245b8c436. 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/FR5R00907326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x491cb50596e702c058123c6ec4592c6c190e63cd8df8e6a501e3b5bd7243e6c4. 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/USUYG1058697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b66b3711d392dd5e2e98f3735880f4c62711e8593f74b681a24fc9959773152. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-21T17:06:18Z), 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/USQY51562459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x243ba43822b875b62ac20d488ffd5fffefc44f635af535594db5b30767245845. 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/USQY51562462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c105a6004507639c624da34f0f67fd9f66da94cf6fc50b82962cc58010f1d21. 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/USUYG1058006.
Southpaw (Music From And Inspired By The Motion Picture)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb95c2557c955c9cc08f4fdf0a7a32733899508c0e54ea40a670bb4ea25d9ad3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUM71509343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6a5b16e82b03a488a71dc521f587b3ff383a8b83119509eff937ca96d166f8. 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/QMLD61400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6a5b16e82b03a488a71dc521f587b3ff383a8b83119509eff937ca96d166f8. 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/QMLD61400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b9944d070af2686e7b0398d93bc7d39e76b41d970ec11d3c58936f20e414f2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T01:07:21Z), 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/USQY51530301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2826ccdb2fefeb7585f3c88c88f93fe71a602d896a755c6a836070dec9af7892. 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/USUM71415922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0904b1f5fef85c867efba2612415290d26b021a844314d8506057855f92a1e7. 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/USUM71414659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d434e3dc7e610b755d66754aef4b2cacec281ceff198effb5ee832f3478df9. 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/USUM71200915.
Fast Five (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa230fe3bd085e3f3b500bf93f307ef3e1cb786fc9caad49424839ba79e555b. 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/USUM71105021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb95c2557c955c9cc08f4fdf0a7a32733899508c0e54ea40a670bb4ea25d9ad3. 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/USUM71509343.