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 0xb18673393b860d9c9d671d5c128df492810bf4d2bddd6eaf80b81ca0a1e08bfd. 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/aee78aa8-ab4e-40bb-99e7-c3bf638bb671.json and https://artists.proofprofile.net/proofs/artist/aee78aa8-ab4e-40bb-99e7-c3bf638bb671.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 0xcc5750ce5ebe5c3b7a5b905dc17c0953829b75aba94c792d89cb6dbab72847cb. 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/TCAJO2553093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f701aa3d3a7928e39388d69e6fd90ee26a915952ec7d262bd6a2e3bbd7a0ce. 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/TCAJO2553111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66fa14e0065378602a6b1c6fca2d91a1a811250e41a6db81833ee25cde1714df. 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/TCAJO2553127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5417741516a10fc64a9a097a378e107f7458094b9841e12f974a8c23f0254f4. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/TCAJO2553139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d793017c8e8297c4ec5e808e7181a2002c2a0c08755ec5b4eea80e809d6501. 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/TCAJO2553151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7195a650f2b4fb414998efebf387ff0a75ec807eb1e484e589657d7b2d0b34a9. 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/TCAJO2553163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b33e1c992d714faf6934c884fca15b71f1f4b8e8fe06fa211a9448895651b6d. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/TCAJO2553177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef67504962f7e6f5a8ce5799966c6ee67c926939a69f14cbc86cbfb1c8f92dae. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/TCAJO2553187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71fa3d06871ab2289288ba00d4acd05cbb890412a24efd9d805a6d298aded1b6. 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/TCAJQ2506167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5b722270ee24e3b31a270fd009ec579f6eb4610b5a0072ea7bde820a93b3056. 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/TCAJQ2506178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f63d7a2c79be8df65a97833d369c8f19cef5b63d9e6877bf4c80e4c35efe2c. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:19:00Z), 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/TCAJQ2506186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaefe9af3a80f9c42de89ddf9af3fe384f6a109609b093c7286220bc1a48fd97. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/TCAJQ2506193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cbb154d8ef6236a9a37d4fce4dc317d0a6e0ac3b7faa977228cace33975704c. 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/TCAJR2506195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da7a12452ca18955135c3f7fd54db7291175f77440268c9ca23a053047970bb. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/TCAJQ2506203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaea306533d524f285dc7f5fa81d9df58b799e86cf3e53647dd519e5cf52802d. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:24:57Z), 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/TCAJQ2506208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf35620fc4ef16300ce757455fb7e465c8353af60aa19522565ae49f67b2b3adb. 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/TCAJQ2506213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f2c7320edf56313939ba51f25b599f21e298980c30507d35757d0d5026a1ee. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/TCAJR2506221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eeb160210acc8f03c54e8f773374e58954f6f491faef7a024230819cad8d8cf. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/TCAJQ2506226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x982afe1ed10ccf8807943e4cfb33cff47d80fa2be6f3413dbb4882b510d5d9ee. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/TCAJQ2506229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a13f993eb1735da0ca384ef8231899f0e8974ed48b947729088d916a89d7577. 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/TCAJR2506230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ab9f451bf3627d0d7aa67ff5cd46f86853613132440f0cc508db85e9d11300. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/TCAJT2527211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae92c016b71683d7fceffd4ff0ebd0a0c2fd6f94f81d153ff1da1130a37bb13. 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/TCAJS2527215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7075cfe1de9b2d313868a034be6ef92ba45c999bb78ed8e468774b3890ab23. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/TCAJT2527216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x565f2446bd499be4c9c0e2dfca2755ae35cdb45c6273df805d8816d179c5ea07. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCAJS2527217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ca8f8c0256c0fa2215a96d89710de9dd370ae6fb2bc956cf274d037e0c6cf9. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:53:00Z), 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/TCAJS2527222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdaaa0dc8b8c8a51fed0f5450123de906d6fd00e2877f3a4ab84ab01c36cd8c5. 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/TCAJS2527224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0145075d62a4a45a057abe80e194b3df125156732165073141a1217fe3bac5f9. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCAJS2527230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a2e1fcd9b1662fddadc0beca07232b069dde1c9c7370a782c0954cc6770e94. 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/TCAJS2527237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e12c087366d0a44f329efd4daf4454a10417207ed04202731abebfdc7d1157. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TCAJS2527240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6438eaae5e093edb481babff6c4c2789853e5ff6ad5e9945546bf1a0dfd9ffa0. 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/TCAJS2527244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17408d422b400d86855751e5b51ed3f8825f5886f535ae390a4b89cd12b99e79. 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/TCAJT2527254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd870ba0edb82f8aa7ce11a5007a0b15389067f48b6846c907a57c578a081e8c6. 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/TCAJS2527259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05302a9d6f30019b66666f29cbb0928d652970d39631362acf3af10e3ed9b8b7. 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/TCAJT2527270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020ffee55bf244bed70bbe3c52453b5de48e33a83810d6c97a15b8e6fb84475e. 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/TCAJT2527273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1218a66627b66eca6c9a792f6b05683a0e7ef536048b391e99e1d31bac655fd6. 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/TCAJS2527275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x158205d6521cd3ca4e8cd92a2ff646303a03dd04151033bf149f51fe1f9cf607. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:57:03Z), 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/TCAJS2527280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d5051e1830ad5603d18ffd7c1a0407cc41cb0844c65714e63c758cd4823fa21. 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/TCAJS2527283.