1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x9165bc5622c12ce57a5f6e1032bf45d95a1e39d0f448fbb256ab438bdb66ebfb. 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/ec3f5646-519a-482a-be62-a5e1500d90e9.json and https://artists.proofprofile.net/proofs/artist/ec3f5646-519a-482a-be62-a5e1500d90e9.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 → block OTSBitcoinBlock must exist at that height 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 0x384f01b2ca0d7addb74add2b212c6dc73b0a846ef2cd4fc6feae8b0c1e042d93. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/USQY51243471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f3f0597caa935e971c04b0a73509bca7f7ef1bddcf2d6eaded7d3103367366. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USQY51243473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f7a4e768bf5d75e07ede8a19a87bab64137c77e0c935ca19b90d9a40fe152b. 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/USQY51243475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1307b50cb8c2ee07fcdb903d396add24fb0de306a059c1e18981150c91ff2596. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USQY51243476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ddddfacf06da37ae00278b5710c69e87721304adb677845a2a246ac0a65f7a7. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/USQY51243477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf940af117318eac16d74d55cf74b9b8372e02f4aad9c6d627823571771bd2ff4. 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/USA2P1387304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f3592713bdd8fe4502ff62bfb449c9354168393e37b4b195921336d72d9c054. 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/USA2P1387305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86bddb8117916999a55c541560d438f925f261ad4f146d7e3e82962d27c96ed6. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:21:56Z), 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/USA2P1387309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d77ae0a6df548f3a42354fd9237efd78cb0cd278222b7b609a531f1d189abf1. 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/USA2P1387310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6e209eb440935c3d33247177dd2c6d03b57468bba2d81e3b5e52b35fd7dc5b. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/USA2P1387311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x369ec9291174e960de6338aace539cb3c475e21e6a5bb97da6b1e4e169b2a904. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:48:50Z), 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/USA2P1387313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x711bae93eaca507561fc2c09a2863997fc366eae51968d99342f998805a4e27a. 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/USA2P1387314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d7c73fbbb2a854367f5e7b341ec5c4907af1053ad7a415f38c9317a27b2a46. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/USA2P1387316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8915fc8ad3e55a661eb4aba1c6006f0cba7591ada944c8d7ab1fcc8253ce3afd. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:51:37Z), 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/USA2P1387317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ea07d6392612050cfa084a9247079631150588a06ccfcb15485318ac90e1cd. 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/USQY51706004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e930a9d263f109ada1b76436607b3e66d607746b3e3262e0f08bb4d104658bd. 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/USQY51706007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x264ef36115cdfb2c22bcb6a68203a81fee4eedd340b8e5b340be4244df0e2d59. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/USQY51706008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa15f2037c1695dc17fca6fb8936e7f9ad2b90bd206c5f802f252436bc9df3b8f. 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/ITXDW1600384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bec9ae645357ccbf1b4b99037c6e2fd10e0aa209e2b0cee7ff28be9a7a0bef3. 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/USQY51005035.