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 0x1fc1c6e000c71a393cfe3b850ee816dbc6b06e28493ff11793f31f75a560b28b. 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/a899f464-ffbb-486f-a95f-6e2a66660c79.json and https://artists.proofprofile.net/proofs/artist/a899f464-ffbb-486f-a95f-6e2a66660c79.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 0xaf318b48d72b68074b1c9a58061a41949c77d467813cacf2b08a5f63188a80b9. 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/QZMWW2342960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf69e50a22df24e440d8d3703bb7651e663be59b9f188377ed84c52187f9b77ca. 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/QZNB82302626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c1dcdf2017fad31acf15ab418ef1b38d13c00479b4c8096dbc8831d26459ecc. 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/QZNMT2393076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea308b99dac7c9eeb06cba2599908517cc476ca6528ee5ea5006ee1311043c24. 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/QZNMT2393077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0817d7b49381069f3f0c03b62dbfa3c9d4eb63f41eaaf4602157e7bd541a8fc. 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/QZNMT2393078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fcb7761ad242beda279dffbe20479dee7b65029252aa98ad6501a95922a5462. 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/QZNMT2393079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb89510bfb6a9d8c2ae426dd2fd04dacd60480ec192b28baf5599bd08fe04e7. 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/QZNMT2393080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17eca1054aadbbd5895b3606dc0b61bfd219683b399f9018c5c7fcb4b4da5410. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:00:14Z), 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/QZNMT2393081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48aa709d746b1f25e219f26327a3b0bc064dd8db31e2cebde14bb7b4e13b7b1d. 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/QZNMT2393083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9277827f15e68877d02a539f94907ddab6eea8c5695099151762e3b6f940f22d. 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/QZNMW2383325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x625553a361768c92b711aeddf230ccc4d1d97a70c634f6a69dbe904ad7e20c01. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/QZJ842004043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24675a52b265e542ae14cbff27c6b7ed75888e25679d06958e4f218a41ee3e1c. 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/QZJ842400039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5f90191cd6fe679c15de7e8d778e024b14eb5b267efeb559d6ed6bb5a373fa. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZJ842400275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010bf6904ccb1a40100536455dad908d32cd4438c2d42959d592b5ab9871d053. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:11:12Z), 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/QZJ842400276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x612ee2134552183c2ed5ffc52363e90b42bb365dd3154fd8f55c83dade21cec0. 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/QZJ842400188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fbb4e8164b2d668b767eb55994850a16c4c54dd8bd6d8536bf90730f5cf073e. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/QZNMX2405505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00ebc508996f16c160b6d28c3eeccc5a9fc5e3795f97eac532e31e2f3c1b0bd3. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:51:20Z), 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/QZNB82486904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf9e01d10ac228bdc58ea1d57ff2ee0f2938b6b259617fdd8514ead10cca730. 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/QZNB82486905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf948ffd872b6235f2ac66fc91390294da243c485415dc29c402fe777a434fef3. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QZNMU2426064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eddf4e04a4d6f1b19db56e7fc92162bdb60eab5f346d6a326b42a5b1fd6af13. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/QZNMU2426065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x667bf3544a3e29f2d2a6bf6070224d3437f6d0e12091febc26ce7d0dd2dcd405. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZNMU2426066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1279421b2e009cb1a7da61619eebf19e2b17ed70bfac45824579ea719da1ab63. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/QZNMU2486269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e75216ec647f2e5d3b00c9ca8598748dcddb34dd62ec2fc8e074954e8a2dd4d. 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/QZNMV2474807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de3d3bc221a327f52052bc4f8a381015907bda15acf08f8aa31e22f78de9681. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZNMV2474808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a9ff2028571810aeaa5b8dcf29edd1603d260622b905b74f1322ea982a50d1. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:43:11Z), 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/QZNMV2474809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36185bf72fc5af8e87634df78f93f20b59bdb572a1a84408b8bdf62df29604e. 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/QZNMV2474810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4efedd22d47b064d00c8f9dd797aabd073638c09c16b15078885140c4bbc54c1. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/CA5KR2511126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13117adf17aa61aa11aea42180eb851764dce391978b656d695819867e8b2ae8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CA5KR2511116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d2c95a7626ab6fa0aa10e472eb37ff725a6ad33b05ecf43d30842a4cae8b079. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/CA5KR2511117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374b6c08142bab3cf594844ed2643552422608cead8e28d1f0d44981734531de. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/CA5KR2511118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6629bfb02d12584af5d05ba33951b1fdaca6682897dc346e4ca7835d5db966c. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/CA5KR2511119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a293a9e3542703d491f7c7d5543b9e549a641b7cc937dd0f40d334d4fc0706. 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/CA5KR2511120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5045b24349657d979ae47072aa1cd3691399fe8a6218d983ade30aa0a6eb6a46. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:03:10Z), 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/CA5KR2511121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d682d6031f56ba9da58ae1e1a9f9eb9cef9732d774cbf68af31bc0beb700b47. 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/CA5KR2511122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb70325ff08d3d7d6634b0c63f595d01383e0b919bec00cfd86286a02d0fa7cf7. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/CA5KR2511123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6c39a4d749bee9df971c8a33b681ad53b60ed80a3fb78c34b86c35ea6a17ff. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/CA5KR2511124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ec6d649f930351198894b9c94c45d916a83eade1e7a00f5ffd13bce1213cd5. 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/CA5KR2511125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4efedd22d47b064d00c8f9dd797aabd073638c09c16b15078885140c4bbc54c1. 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/CA5KR2511126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d1cc70f0b8ad03034e60481e5378cf980944194be5713ee51abe9c615910ff. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/CA5KR2518202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x626f693cfccbaf7d5234cb5d2659c06a754a4bf175e78fbbb3d132e647ccef7b. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/CA5KR2518203.