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 0xe43c18c403f52061fc29e63ea2fe60b51881f807ab7046607bb83f35a87e05a9. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6cb84435-ebf6-4f39-8627-3ebb1832030e.json and https://artists.proofprofile.net/proofs/artist/6cb84435-ebf6-4f39-8627-3ebb1832030e.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 0xd249b2816708a9d1cd6c0bf08043daaf5253828445629b128f80f58da86e5f84. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/IT0051201001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd5d25402ca76b25e4e2c90903ff1f2eab4b7db2c0a5e3461e72b22e96431b3. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/IT0051201002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79d5b93117bbb726aed2114591bed5f55d14c5372e71f4b7bc2531a2dcbb31d. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/IT0051201003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57eac46c3bfd15d73e7ab4e563a6dff11abab809991fb7a411472937cb1d23a. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/IT0051201005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed2aad0e2db2ecc0a199304f8d77c87f8f27763b2d0f0f0dcfe696e8babf8e8. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:09:27Z), 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/IT0051201007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3167363da2cae30317970cce190883c530c41742e9dcd40c3344a478d66e67ee. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/IT0051201008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc83bfd06f94b83ca0c0003178df08c3731936a5619768051a1c019d5a67ec639. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/IT0051201009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff0df3c2a15e511bfae822d26f05a6377e140157a21b9cc60d8da49df5bd970e. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/IT0051201010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e3f1bd6d8a3806e2f241a98c6a74645a97761b4e017e01cd5d6b578fec9ef2. 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/IT0051600281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x399d9b2bac551bf5ab6280b758f73acc502cbc50c4e25a0e0de432677ebaaa30. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:35:17Z), 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/IT0051600283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e3cd68268d4debcf7e3363fc328bc5e8d08b0bc87f6e6091b8e6d5400f15a0. 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/IT0051600285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3028d69b6747e351d09dd5d9d33666e83e943578c125840d1fc6c55f157e117b. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:39:21Z), 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/IT0051600286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42fad1715d1d51e7a3df9a4b9ea5849056b3b9d6b792de704080d5fb9d579e4f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/IT0051600288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02db4915b2348b13500b69103c79a4902e45a65eb02ce3fe5a36383570745a57. 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/IT0051600289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d91270269a7f3048475ce5d2583f51bca75d5d8a58ef82b17e013dbd187333c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/IT0051600261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e8ab9354709897c496b26e6d39572d5f52a14af44a54863e3d2003599246b42. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/IT0051600262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2be27e8ab85c057acb574619513b7f8016f52ba03f02e3fc13b0c0d86fea71. 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/IT0051600267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bcb796fa12bccc38ed849a21066f84a3182d4e26d8648984c5fe851310db417. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/IT0051600268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d0d2ede821a87906b012442ffd6f2a2151532d42eb40a60b95275c6c47614d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/IT0051600271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb900411829416ed419b97011640f885155ef6edc9d2d0a01d6aa7ae0b4fefc9. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/IT0051700101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b808b1d2aebb5b1f9919ec9a484a62404172e519d1bd644f5e513d8b15577e. 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/IT0051700103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbf90015fa71522f94ac91814dd1bd022f127be6db8ec795bedb3ead41589017. 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/IT0051700105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3560cb8bae3c1e40e007fa6ec2ec6b70f3954fd77991b430cd9939442db3b2f. 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/IT0051700106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd97e94f27603170ec891cea8c6a2155d41fbfc73e142d01405c12bdc05e9533. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:21:35Z), 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/IT0051700111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c96c302505fe268eb74e3eaae487c04c7eef37095b42741f4f4ffa3a30d2a86. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:40:53Z), 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/IT0051700121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e13a7a65f57a5b46a3e010f3ef24f6121f15fb8412c54329145198b3655ef25. 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/IT0051700122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b244c01a747f36313536fc4f8e67d80dedcf2b997b5e5ed8f2d5749f47d075a. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/IT0051700130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe930986c7ee0fb399a186686d7c95455ff96e3d5d26207d305316175b5d8c5d1. 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/IT0051700133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46aa3ffb0c809905c59ad38dc585c9daddf91d7db31929b2cf1bb11dd8d4a285. 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/IT0051700134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd57ee692f8ff5e0fe7b7d18a0c303ee6a6d4f07893ac6470737a3f39422cf84e. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/IT0051700135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38343941468b3dca7cb818a1382e0d1bc525120194df43754890f0cf3163601d. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/IT0051700142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf496f38759c713ee90caf460a5320d1524a17e104a399e2332326a3a0e50432f. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/IT0051700143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c416469204f23f1802d6560b2bba52944a50a2d7de94ecd506ed294eac68172. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-21T08:34:24Z), 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/IT0051700144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0456fc14271a3cc0eae85cd747f498276437d905adc5b80d757ab3b739c79924. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T03:57:40Z), 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/IT0051700147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e2d8681fa863d18bec71586bc43a3cc452de9782255b56645770ed8d8edb18. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:46:50Z), 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/IT0051700148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x184b239d73b5f3bd775a95207ae7b0018fa06834789f93e6a58d02d280a407ae. 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/IT0051700150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a215a93e39f0ef8aa56df9b091bb7e841ef6e06a4ad2cfc8777548560786d2. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/IT0051700153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf4be13adb76c6b156aa2fd8a3e5b7468879ae150fb1e0fd2e2079250b1562cf. 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/IT0051700154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b019dd442b1aa22181b55e93c4d29314c6d0660f568b2de4b952642a04c2c3. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:09:22Z), 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/IT0052100201.