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 0xd9273e5cbdce757f04a55f5bcfb25cd97682c9b0ccf70cf0ad1302b1acb8325a. 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/1377ccb3-e8a9-4cb3-b11f-df752f18994e.json and https://artists.proofprofile.net/proofs/artist/1377ccb3-e8a9-4cb3-b11f-df752f18994e.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 0x2c75e4ce901790fdcdeba879455a2d2c8b661c7dc9906b705bc6c3c4fc1b051c. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:48:39Z), 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/QZYFZ2388753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x482b36ef6174039562f9d029c610d3ec8f60991d16a1caf062c1f98a37ae8a6f. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:49:54Z), 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/AUGBT2364043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed631ef7d143053516998947dc7be6721e0e10efbf53a8a1c9d7d075aafa3dc. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:02:24Z), 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/AUMEV2439122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f85eaebf9aa441aa6e88e113cc75d79d80c85e514f8f93c34cc2ea74de821e9. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/AUMEV2439125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf6d1ff5b7066b562dae20cc16d4b654b3617184ae7e2d2566aaee29c82b2714. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/AUMEV2439634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac2c5e514e41a976ed64c7a24411a3c8ef32f39089d3677b5b7a0d394973f78. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:09:38Z), 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/AUMEV2439644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8abb757984fe854142913448e79ff58f2e9045f95c7943004d9a7d8fb62e643b. 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/AUMEV2439645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15b2fc7670b2be7d71df1019ebee2bee54b26dcb3a7854f9bbd8df3a8f0ca62. 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/AUMEV2439646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb66665c2e1349ca51892ba1ad6e6fde23718a4a95fbea190b1acfc73793eae29. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/AUMEV2439648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68cb8258ba91685cd9e537e77013a59e6d7ba110db45d05973178ed72e8d92b5. 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/QZTLA2441814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af640eaa3834c8e13fd3627d6e00f994902b798c8d3bd7e4e6bee50f4f14fa3. 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/AUGBT2431985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46f1fba9b53e5051f11d426b4d470c49f3571939147ed544ef3f905195d5918. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/AUGBT2494072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f454d80f53d9982ea80bc6253c21db6d4f09cd6f07aa63788567662ca294475. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/AUGBT2494074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8aa710be5cb1d9357ff14baa5f51ee4911a6405723cff394dba55079e4ca257. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/AUGBT2494079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4692568967197ec876e16ad80483a95c307275f4bbefff4010b64d6f1d49e721. Chain 2 (Bitcoin): anchored in block 957730 (2026-07-12T16:41:26Z), 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/AUGBT2494085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x327b688d7c23bc29280ae589739dbc7c6ff53acc3856c61e2f05dce6d755304e. 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/AUGBT2494086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec4cc4f868e23e0ab1d7e2678521cce01a61aeaff507a27cc7a6b3fbe148e4b8. 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/AUGBT2494095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e4311e2d1e2eca8e93f7e325c0777488d49c28e0fd1c19da9fa2a337fd4f47. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/AUGBT2494097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6107cdbe42c847544ced30e8095fdc892d8baab9a26cbc14454bf6474bcae883. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/AUMEV2522801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x008d5399a6efa6351634866b129bd49333ff645942522371b543eaeea16ea22a. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:02:34Z), 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/AUMEV2578142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x855ba57ab9dc571d7a1785bf03efdd82b39cdadb53f2070eee95837cd339434a. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:26:15Z), 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/AUGBT2531671.