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 0x96dedb0b9f6bbd294038a2af2a71d1b17aee93844865617d7e8b7a18d6501cb0. 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/cb7c2604-6fcb-443d-8fab-4d483a5254c3.json and https://artists.proofprofile.net/proofs/artist/cb7c2604-6fcb-443d-8fab-4d483a5254c3.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 0x05ec4b333bbdc9a88481852cae8207babba70ed80f1d5690c53f2f54e1e6b3ae. Chain 2 (Bitcoin): anchored in block 957796 (2026-07-13T03:24:42Z), 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/FRX282226191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964c40ba7b727c7243a75b4ce4cf8996dcad39d36977e17555a005f7e4ce4538. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:35:26Z), 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/CH6541867717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02be759d8ba8c7bfc61269322643dd989460ebe1f7064104ec355fbbd25e86f5. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:26:54Z), 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/CH6541867719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17339e9f0810dfe7f2bda30030a88ef4b5a8cf141bcb1b5537e3f6193d5a5a22. 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/CH6541867727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0824a2709ecb6f7e1271e37d77307717da5d0320b0fe7cfdb91862d1d3631c6. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/CH6541868616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c61bff8177b984d235634b5359f4f07bb9d09b9e739a9db8251e88ed30abf3c. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:18:26Z), 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/CH6541725606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce845545931059c64187cc79dd2627fcc4c7b211d2ae084335465b4a17f72a39. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:56:40Z), 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/CH6541725609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25cd2b86be08d2b8c09ea431f894756d8eb97d9e0e0739de04e0570747eaffa0. 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/CH6541725615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x470921c643baab7842ddc52b2410c047e1b31c42788c2fad97880c74b72ea93c. 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/CH6541829597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6867680e9cc8d042b27eb29768a13c3a98d822cb98f746fc1bad511e0d0b3a2c. 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/CH6541829598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc60d72b18ac226d3f5481f7914946a1302eff1f62fd090cf1e3e3710d6a3ce4b. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:48:57Z), 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/CH6541829602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x163c13b876fbaa5394896d1a39a2de8e53d8b5e6389e75fd476ad3a7c4fa6eb7. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/CH6541829604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab940939e25ed3c1d74125bc2bfd703b54076ff4bafcf1fc559e229258e96b4. 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/CH6541994751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf008c8647468f8fb0b94fe88a15da5a8a6bdf054fdce61f24ee6838601bdec. 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/CH6541994755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb469adced27460f99ce816640baf61881af8f99496252ae1944d33d082a1e13f. 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/CH6541994757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0926659111fa88f00064388d5af625a00f58952ff6c4439237f10bc9eda1cbef. 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/CH6541994756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c00669728e539071c66c1726ab67ac15da9d75efb76228a6f6205e324188ec. 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/CH6541953936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74923cfd397eb52d4d13755c213d8644226a7d875231591913a4c4156c48578b. 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/CH6542021926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828ee6f6ba94f00b2e811beb4e1248cf28cb84752df1d4f0627b23e2024bc418. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:06:03Z), 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/CH6542021923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca890cb1ff36981a59e0e5b12270a56b850dc86c7e82797060654bce9ee8145. 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/CH6542021922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe2d6ad59b012f6d90ebd0751fd26c6d42fc87663e61f27983f89d6832c32eb. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:01:29Z), 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/CH6542021919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f486d0f730aa5d4465c35a7b567b7541299fae3276baff1c8a8b9d16a3a8b5. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/CH6542021918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35f1ed7721d9ec40952972f10217b09a7c80648eb5ca29baa4c399f30046db7. 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/CH6542021917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc68438239740d4b2a7c557f95d170d5c943f243d7dcd0fb1246f59b284eeb7. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/FRX202273026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf387ae95a09f9b9527f79056e4e5f69d4e10324342d356214a7daa531c154449. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/CH6542294959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19fd37f106c4d083579ad159aae3e769afab27d5a4f07cc7cc3c305f93fe40d4. 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/FRX282315868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0445f6672c827423cbd459e5f3d67f6ce80f64869d5d859c219b5f2281ab01bf. 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/QZNW72373334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf04415d5cf42b78d4d7f8b505ffa9bb6f7e2f606b4da13c97678dbca834b787b. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/FRX452340154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf9b507699602fc97befa40ddec9e48ed598f249fc9db6025282bed6e530a03e. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/CH6542335211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb48f30e2670174e05c310655c11e3029cf6cafbd06b84583776eb08818dcac4. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/FRX872399849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaaac7ac96a4967bd7d173099f532b3ebb29daa1a39bbbd4f22ba9445d8bba7f. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/DGA0M2320748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x054dc8d6ad5fb0f59ec9231539542fa6d18e47c456dbfc45bc2681cb9f51a0ed. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:10:05Z), 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/CH6542409920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x982fb2145dc4271bf0f7d6763136deb0d7af5a29fb8ca4de6faaef3ea0e1d74c. 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/FRIDO2413350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf78095b291826a7572b3f0ecb2bd1a68c008c49f961da5a7bfff64da9fcc743. 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/DGA092411332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb73b46e12d6df75c01d798d3d0bf19c6b87ab9d0f6dda81eeb2e08362da7d9. 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/DGA0S2487733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631e7dad35c41125f333bae0683a455b5aad2a793b96aa0e8fc6bc5d12760965. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:00:07Z), 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/FR96X2541248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cf159f181cc8aa0383c94e8b85648fa6add93b6c49687ad0dfabfe315c9c241. 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/FR96X2575766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36591f8ad99110c722c88ef42cadf8bcd7b15517e9fa40351344fe1ce623a475. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:02:15Z), 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/DGA062514392.