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 0x09ede345baa42ac50c81b8fb4667b84f040f96fbd50298e8ec25ece8f75dc4cb. 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/c6512197-8423-4ecb-a9fe-181f69e6acf9.json and https://artists.proofprofile.net/proofs/artist/c6512197-8423-4ecb-a9fe-181f69e6acf9.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 0xc794652ead07e91abf2692b7591fc068eecd879bdd42f4ddb42ba4898de34807. 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/HUC301402131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd47c530bebcf82a29a2c3a1a76f6f67df367199ef7d04b3dbb8e53c4ff3ff6. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:17:30Z), 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/HUC301402135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c5a206acba7ee5458b56c86bda7fe08926779a5f13153d519b2347caf2a432c. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T11:17:55Z), 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/HUC301402140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfdb6679e3ddeca8e680406f66c9d898ba8b97a2f124ed0b34280b62dc10b409. 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/HUC301402143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e500bceaae7e273aa9b057dd023493318d230ac52f9871ed5f0cddf69156087. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:39:57Z), 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/HUC301402147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20576f2710c96955d041d9ac479e7d168e88205a39196b93e8cf27a8b10bea19. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:31:49Z), 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/HUC301402148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fc5341c6b9904be763b3b421fd4d13f91c452c2d8702e00a7b8cc86eca4f48a. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:36:57Z), 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/HUC301402154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d162c9db1f8900b9f59d364e5d058a51f1f7ad2541a70b524d111be33ec971. 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/HUC301500803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc96ac7f093467c44116b0a29b6188bdf4456043c81331679224e3ac434b4a8. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:10:10Z), 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/HUC301500804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea94da78b13a531063c27d1a6c0aefb4c96aab2efefa5210abb65af54829a03a. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/HUC301500808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d79efded4f775731463712f79f885c3b98d8334596080e8ae724f900b504ef. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/HUC301500810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc530591fc0a7123a314d61917f3e6fb0992b56606df8800bfc636a3974b721fb. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/HUC301700457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b77649cfb189510e81fa3d7331677ca4ac19b6983282097809bfae5614d2f53. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/HUC301700458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf48e83b930b59b9948078bf8bcf96d44d554cead8c16d3917c16d32182c39507. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/HUC301700460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6355956a2a3b6dbb90b57f3846fa3e3828854b0f43cb6efc851532353a8a45eb. 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/HUC301700461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x325901131163c288bac22a06fa47779ae5093862f42de7b06b8c704f9fb5743d. 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/HUC301700462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3621bb97e9d0cbc71aadd7ae228d41de7a5c8f7ae15220031c96cd9384e6713d. 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/HUC301700465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb538fc4e5dcc0924680e2a5bf1e6c3582dda9ac00a662972d7ffa1c088328e73. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/HUC301900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6fbb7cc07220b09d067e28c7c2435d84b7236af418b3d35d71cc071b52b56ef. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/HUC301900107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b2327a379063434d08e67eb195618cee12946a563fe8ac02da8b8ef8813db2. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/HUC301900111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb530664564e7476ac8dd81231ab5290698ea35b69ab8747a7f3eacacfbfa3e4a. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/HUC301900114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf89659c0a4a840898711614e04bac769702a10799cda30ad4678c548c2b844. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:53:49Z), 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/HUC301900115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d2234798cfa57c3903fcf88c1ffa8e903f31cd866566f3ed87aa9f0a07c0b29. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:35:54Z), 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/HUC301900116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d4329ddd0e5bbca75c77a507be9c51f1f71cf6cb6f909285a243e332e330d57. 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/HUC301900117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f395084e20373ad1c8322a92166c48f60ee3287673cf578fabf97b87ba5a5f6. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:01:10Z), 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/HUC302200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b9aa7f6f5f5fe7559b4a87e2f5d758b7878b44cce4ae3638480ee82be0bc2d. 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/HUC302200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83954d0754e366de6ca83b46cec4848c723d3afb1662dcaa3371bd6f6c9f3db4. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/HUC302200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc314d79c57798af7e41dc3b82ece3e1b75c48ef9bb72820a35e99a515900d5. 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/HUC302200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9595f6f3118a83cdf9ce379159b9d9c66f262fef4cfba86db3679ac83476acdb. 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/HUC302200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c7587b79ffe2bba176ade10322d3cc91953cac6d2562a9eeda7306cf01afb59. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/HUC302000062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf63bb779c9e0cebdd6d016892f7d107e2ca212472095e51202c99fce5eade5f1. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:49:24Z), 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/HUC302100677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe244da2e226d1d8745be9b430749f07873688e76b528755e9bbfbadd70a0503e. 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/HUC302400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b09b55cfb845da9ad63602f27ac886c48f8e78a950bd0de1d21b7e990ad8f5. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/HUC302400154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f7abf6e30ddafa15baf23db6329200846373d57ab766350f4fc3fd78dc329e. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/HUC302400155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7811a27f17d758995729e6cf7e852b59ba81ac7020dd72d8c63de8cb28a70f. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:17:56Z), 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/HUC302500137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f4916c7006055640ca598366327412ed2bc634e3f5432baeecd10db6fcb2ec9. 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/HUC302500138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b8d8a1c9f024cf8427ff1741761a4fa1dcef3d8236ec4d7a2a11e2c2fbc6919. 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/HUC302500139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3162fc9cd0e5566696f11ce1382149f2713ea8967f54a6712010ce9ef6bf9486. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T05:03:00Z), 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/HUC302500298.