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 0x2a598971f264759a90107e017f6353dffa159c249d8af18b0c3e160d41049d92. 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/902fc0ce-4dd7-4366-88c9-4ee9fc024c52.json and https://artists.proofprofile.net/proofs/artist/902fc0ce-4dd7-4366-88c9-4ee9fc024c52.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 0x5f3292792e88b92aaa0d059ce72083b9a366adafbdff94d7b04f96db32a21845. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZES82285959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab379bfc3bcd2803bd07b80c917f453f269aadc8628213b4f36d03e170bbaed. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZK6Q2063990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca3cdf677331b3d2db959cc86615caf54853af7df1561cc4a24a60629b26ec9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZMEP2430146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aafc069d06511a7c37adcc110d74bec3ec1cbb222b400f43aa1ed75adea105d. 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/QZDA62074167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe587aaf90b45672ae330c449fcfdb929ccd339064014fb13bc4d301743581403. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZTBB2257847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a00bc7de0c5bd6711f4a69af352c1b56b2400c7f9c3488184e834d32196572. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZTBB2232820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde6f178b43c815c79636b50bd49c29d77e0134a1b4906da598a5cb8fe055742f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZHNC2133075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7981031b38a38f8c91fd2acd88e5c6e216d48c245c015ba4adfe63cb7182633. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZMER2304392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a07c8c9684fbbff558cf82aaf7281145e621ed121731d0aa2813dc84b53aae. 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/QZK6G2232666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4395a55a63117f5cbd69f0f1c45b13539dc1198ef8ea91c4d2809ce3d4af5cf2. 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/QZK6F2264567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x146437cbffc0c57587eaa4015e626b66ba78f88869971791aadae4f7d8991c30. 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/QZES82409984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23114e0cff73a8a8b3395fc635836f470303ac28044cb9a2af9c9bd21414511e. 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/QZNWX2206063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff802ad96ebaa614e2fa3e0fbdeef8407d35b347e986be34d552d02fbd0e9b39. 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/QZMEP2430147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2af1dfefbfa98eb57b176116c8589359fe24f6b778e4f14904724cf00aa498. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZES81973714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cdd165ef56208885c17ce7054ebb250a7e3ecd7e8f78eeb8e9b7b749e234768. 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/QZES81973715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac56b673a12fe6df90bca7c324a8078bfe60e24a1c7a933562fc86fa76c27328. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZES81973716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x746e76b8b7f2b50ff40057de482f408cff8c3a519e5ed7564b9f466ba0ad6d5e. 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/QZES81973717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141ffe1882c15466457ab5e59f5efdc986fcb6f3b3c9faec6859b04a81f1fa56. 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/QZES81973718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5fbb98382fe9720483ad2375d321404c22c62be499f30e4977810f1f48af4f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZES81973719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703994cb09f0f5a3efed95fbe7c5f6f8bce20bba8e073b227502e48f79e7364f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZES81973720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116caa5c0b67c374fb4b51874b4afdc77664749cf191bf92c8f493b7a30d4e76. 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/QZES81973721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e9c13000834dcc22102acd6ec31958b07c3ce498c3ab35a2d6d81ae67eae59. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZES81973722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75785c2256b99d8b904596f3660306dd14d2d03414253fec45be1e3d1c68b2ba. 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/QZES81973723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7008e1787ca9e08306630691dcb3b20c5047aeba20e6b86070ce49426e35238b. 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/QZES81973724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9cddba0c4fb653a7467f7ee254beddc79cfb70fb3cc313f9b8a3c25f06cd850. 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/QZES81973725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1533b81f79a97ce5d0e473d126d18c9de01d66510d8db87ed408623d808ff7e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZES81973726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x146437cbffc0c57587eaa4015e626b66ba78f88869971791aadae4f7d8991c30. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZES82409984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7981031b38a38f8c91fd2acd88e5c6e216d48c245c015ba4adfe63cb7182633. 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/QZMER2304392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f3292792e88b92aaa0d059ce72083b9a366adafbdff94d7b04f96db32a21845. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZES82285959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x985416714cc883f2479ede46d5fa12cfaae882959fa18531c1bfb7f9781b8eae. 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/QZK6N2319611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca19a6e2f799f3052a42c22ad5cbfde4e4a1efe9253598e6ecc210dd5349dd85. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZK6N2319612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe587aaf90b45672ae330c449fcfdb929ccd339064014fb13bc4d301743581403. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZTBB2257847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a00bc7de0c5bd6711f4a69af352c1b56b2400c7f9c3488184e834d32196572. 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/QZTBB2232820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23114e0cff73a8a8b3395fc635836f470303ac28044cb9a2af9c9bd21414511e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZNWX2206063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4395a55a63117f5cbd69f0f1c45b13539dc1198ef8ea91c4d2809ce3d4af5cf2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZK6F2264567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a07c8c9684fbbff558cf82aaf7281145e621ed121731d0aa2813dc84b53aae. 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/QZK6G2232666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde6f178b43c815c79636b50bd49c29d77e0134a1b4906da598a5cb8fe055742f. 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/QZHNC2133075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c37173dad7750577510e0f4b6984a94d4d046ed8b339f84330a954b3bfd722. 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/QZES71806491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab1cec6a97a02fe5a9e190c7a19d16a62b6086e7b7e9ee6aa7debe021431d6de. 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/QZAPG1881143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53254ff51639578cc7af9fb963348a6c2f622274361f0b5a63ce96a711a2815a. 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/QZ8LD1729320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd883a2a4860bbcd7027c020f5e4d67cfbb028f703d9c6247ffb626663c159717. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM2PV1739971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c0dcc04bf99aa8c02eb3f302c56921f5b57893800ed727ee4778700b7afaf9. 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/QZHN82595421.