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 0x138560ee3a9d485b785b96532e10abffda4780d8041e6191c8734148ba9167e4. 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/eed2ba42-d79f-4cba-beae-86e924461ebb.json and https://artists.proofprofile.net/proofs/artist/eed2ba42-d79f-4cba-beae-86e924461ebb.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 0x6c4ad887ceda40dfb104541e6454dbf30ae162617df87bc03e7aad1f90447a9d. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QZFYY2064572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16717468c1474f32f5ce963a3f59d3aa1cfefdd69a40148895eca3b63b140d7a. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZFYY2064573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c4e4e846b683fd8076199a81f8f9488c71b88749d03213b66a0336cd806c56. 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/QZFYY2064574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb853f0c9ef4934199a3a40c82a75400c0fdb41a66760b2383ccb168792c86229. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZFYY2064576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d9b75c26cce05653bf724bdf7ff693bc54e61db77478f9b794b1820de4a650f. 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/QZFYY2064578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ceb7c77c86035dcf842e8e779293071e5dc2944ba9146fe8bf35c53cac4924. 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/QZFYY2064579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389db5a959fc3270580404141e99ef9e8ef6abc79c2c2a97ba54553a8fe430ed. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZFYY2064580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9a1803a9a5deb0a0124cd28fa8b10ebb4470b31b8a5edf3b229463b93992f36. 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/QZHN52090381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba59f80d2d8d4d55cac598b0a48d152a188bf9fb1330bb749e8acd8ea243362. 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/QZHN52090382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e736c445866009eae47ba2a39a82a7f35291bef70a49174d1868ff470572282. 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/QZHN52090385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd71dc72e9d36442facc9f552d9d235dea9dddb9c7eb61278203773af49d5f181. 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/QZHN52090387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d05c6df13889357d513a25fc6a3da962b1e0906219d9bd233f776db25ab6f23. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZHN52088974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d28cc0862afcb02250ca5707d1bad67b52c0c81f059adbe147f662753c48ab8. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZFZ62137801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26220c5aaffaf4a5c82a427f56f40d4274c1c37cd95d337f5d73d18faf80e6ea. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZFZ62137802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2619fa579d27463236d99d4bdfe359426ede53f40bf4ae274379df38cf5567d4. 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/QZFZ62137803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9770a87e31e6c158c3a4d27555c1021e710155835d15e59041777a104fabd4a4. 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/QZFZ62137804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeafa61c93287692e27614b20f60f22a762b711e01090f611421d6fa68fe72f2e. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZFZ62137805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd8b45546d14161142a20b83affc3374bcc3d15e4ef03293eb596d7c6e1dd0a. 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/QZFZ62137806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62702cd3c4a62053050cf1edb8464f392ca57420f801f77d80f9d105f0982d54. 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/QZFZ62137807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ac4d70aa5c5e866b9b109c319cce4cf185cae12938639d2645d62a0ca74c1a. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QZFZ62137808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7591a1ade7762f76dfe4738d75673d86df959a07d84a0712758ac6a3066b4672. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:23:45Z), 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/QZFZ62137809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa98318516884e7294e9fddc010161440b6bbaf7027facb0a8b5b5e610b7ea074. 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/QZFZ62137810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb103359c4ee4b8cfced6bd5d26fbf33a7cb9d808f95e88f1558e3f648a49d2e. 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/QZK6F2100238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a5f712147df528b8a38a4c009da4c4cdb5a46f868edbefd8430482de72ed11. 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/QZK6F2100239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e829f2800455801d3395f06393056804a5d93ccb61f8c03928cce2083dd5d7. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:53:07Z), 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/QZK6F2100611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45796333c2efb5e1a86567ee6ecc3cd0988f18aaf895bcc665eb15d56001cfa6. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:49:54Z), 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/QZK6F2100617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffacb84e2d63a62c120fe1d25638658e25a9f5ca8f7f6973809b1490d377efbd. Chain 2 (Bitcoin): anchored in block 959063 (2026-07-22T00:40:20Z), 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/QZTAU2103474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5f5487a39041158e0480c6f105af8cac98c6079f77a979b01b0491ffc9ca1d. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/QZHNC2598262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4edfd00bd1c216ea2e9846fa860ce280148e82ecb9918ded9e393e256d7cea0. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:06:39Z), 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/QZMEM2519200.