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 0xc133143de1c679f60d08078783dcff2ebaa9d8483978203ddd91d44ea37dab2d. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c4ce7d22-4f3a-4b17-878d-8fa110013576.json and https://artists.proofprofile.net/proofs/artist/c4ce7d22-4f3a-4b17-878d-8fa110013576.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 0x7f8d7a01dc3e6d1d41340a382fd32686a4b86b6c19ef334470d5195d87860a89. 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/US7VG1880655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6b5f020c3f0b7d5862c6c4c699503f616c21faf45188289b7d33b0623286c84. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:18:10Z), 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/US7VG1880661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d034b4f78fe985587c0812cb7ad9d87f2530f97e020a4598e3727b23ba35b1. 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/QZNW72264683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb73ae2119dcaae38defd7948798ae5b21d281146115a41b58e2a7f57107c4e52. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZNW72264685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb434cea60374705a297b560f32f897fb3f7d27515df0d9dd3de1fc39f0d9a90b. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZNW72264687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x700c5a00a627060d56f8b01b92829d2846ab49438aa9f5012a374dd76a0a551c. 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/QZNW72264688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0877d040e25a2e7e02ee897d82d9a8fc6b31d0b1eb56d42d4561799c3895517. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/QZNW72264689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe51a0711e4f2c4d65ffedcfadd9db8459386485405fa57fe3045d0a4d7d8cbde. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QZNW72264698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6fd3ba1fa1f95b22b444efbdb3e8f814d08767604221cced7707cb874f02f99. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZNW72264701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e55c10d4d7dd1de5281b2e68bedd3ffdd682755eb6d27b1060b3be22752c525. 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/QZNW72264789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62aea7fb46fd9f1a6f62bdf38c8e53f28cfa221a9f838ad0799f5701935d05ff. 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/QZNW72264791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fd01bcf4c381a569d2aeded640b2d9ceeef4e0f4ebd5872f0144b7512d82b3b. 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/QZNW72264802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d1121e7640f1caec2c9028d14cb9fa86201cdc183ed99d6d004ae01e99db92. 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/QZNW72264803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d8658d2bec9ac95898b823b67a5532a09a52907c44b114fa5385bf3625443e. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T03:56:40Z), 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/QZNW72264804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb434cea60374705a297b560f32f897fb3f7d27515df0d9dd3de1fc39f0d9a90b. 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/QZNW72264687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e149c295a9884e5fec90324a875324ed6dd47eca99cbd960cb9954c5ad3dadd. 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/QZNW72264703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47883c036af20644d125fb96127ac5e56249ca2b2ed05beba6fa52ddf3fc26b5. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:35:55Z), 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/QZNW72264790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ca8f5697aee2956ca1a150b5706f92b6236eb35032a8508f9ea7d7102864ff. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNW72264572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271e6f8a8d4371219c695dadf4ef8f5fa551a1abeb433e5706990901cb3303af. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZNW72264573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b22e8e85be08baf6895b1b4dda06054b78213dca55a10431e8b039b9c2ef530. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZNW72264574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3094971e644faacba98adb6bb08c29ebd9d5ca38824da0ae3145f6388c7a8c03. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZNW72264575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e4701ae12006eaa0de60a3f7ab444f8c7b34ba0143f34ab24af62ce5a23d2a3. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZNW72264576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00ae25492b86772fec50f6d76a936c9a7fadfa4d4975804c0b6d17930e797e15. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZNW72264577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ca8f5697aee2956ca1a150b5706f92b6236eb35032a8508f9ea7d7102864ff. 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/QZNW72264572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271e6f8a8d4371219c695dadf4ef8f5fa551a1abeb433e5706990901cb3303af. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZNW72264573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x206cda6dc7fc5642c6836dd5685298f195e193c3d1a48e7078349c4dd3bea6e0. 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/DGA0Q2379358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f84ff65ff81754f2dd9a7b529e4432aefffe4e01ae50852948b07ca6c79a6e. 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/QZTPX2559498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda78f1a531c56de78d19ae4cb7fc4c044a2ca126152a5ae8c6be26a0eda7e861. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZTPX2559499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116897aa30837e3ec551dc6bed070d04898eabfb14a69209fa2637e8b3d69f30. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZTPX2559500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b25c7dbc7fcbf8fa634fc1a2a9581bc799c683d721aaa2860968bccf474f53. 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/QZTPX2559501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1bb64926e80e4e51d06cd89becfbf167cdf3aa763e209de702813d44d828298. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZTPX2559502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc506a8a75a9fda154f29c37e82d27d86da5e8b31d2f0bca3092e08c21c911fe. 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/QZTPX2559504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891d8dad0484f1f33172aa277a19f9431e9a3ff95859a4ee3346db4486f16093. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZTPX2559505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80831126d44159e481a3ef6bce876a5b5711875fa82fbfe8586c5f5373b63c77. 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/QZTPX2559507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd219dc4de11b8a48e669ec979844485c058a9de22fbdd252271c00edad3f7d5e. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZTPX2559508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x465c3c5d22f678410af0d58d70fd04fff7f6bc4a080abada66da6c9694e3e307. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZTPX2559509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f1c54634b3a824cd31ab9b95878374311d520bb4bdfc20e1c5cc64a215b01e8. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTPX2559510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a3e3adec040a9c2424785e7c28676580c84807109a8e3e35e57978f2959eac. 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/QZTPX2559511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ad352cda945e2a1392d3a2bf30f743ddf531dd0672abec4b524b7d9f6e1e75. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCADQ1848166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1007058f4b8f9c0d537aff8ccc44815a172edff51f52510a6ef799e2c79967e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/AOA031522641.