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 0xf8701fd9b0d6d2dca74c2aa641f1e79b9ac9300f6e63d76fea300f7ff07a3620. 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/3f1708aa-e77f-4eb4-9395-7b9b39e7f893.json and https://artists.proofprofile.net/proofs/artist/3f1708aa-e77f-4eb4-9395-7b9b39e7f893.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 0xf11d3abd3a570e97cd366c1a72a4f926a731d3a8f1ab1523ca784113982e6254. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/SGB502505697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62da26ea5ec1ca05868d07b3e96cb7de54907c2d0fc74a145b86ab87ad34ba4d. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:05:57Z), 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/SGB502502081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x910203cbd69455b84680e8c1475e5c664d1a66517379ab6bc46a74ebae034767. 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/SGB502501848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe639c20bf51e0adb4f65c4a2d8db5c2ef9c8d5a824ed3bb24196a661e9c5764b. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:45:07Z), 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/SGB502500296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31fa14211393bd5720075527a8a44c6e3073504a0d72affd223c0b9acbbace82. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/SGB502509691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75861ba728117850733c5c5830926772c2f12b49f2a0bbccdaa3b26a2dec0826. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/SGB502501853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21ad14ffbb3b7730e85b2ba8e6def45981095fb5a91166668c2ac54a65dbe9c. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/SGB502505927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67501859164c7c388dafb45f08c53a72d14cf9c6146ab398be3815a0c5bc8414. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/SGB502505860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0fcb96fc9b21acb073ef06efc203f39fb5e61c94d90a01905e196e38821a5f9. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:06:20Z), 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/SGB502501563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f718263d70c5abe31758d0f02ec297ae5d04ee056b6d2dc451c2d72af52ee5. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:36:23Z), 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/SGB502500877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fe696e7659ff7f7abf73122b02e218a2f2bdb85862c082cc8c1b29ec03d4933. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:56:52Z), 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/SGB502501103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea1d7d337a0f641c34fc6861c14cfd5e853b0f3cc2b0e5ed130ba9c1375754b8. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T07:55:28Z), 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/SGB502506033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5293cb98dd47eed23a734e73afaafecaa3041339e062229ba2f0347476bea5be. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/SGB502504321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87109c3ed94f08105328fd82a672b0129d2e299040f1f0b29a0df871f8a9546. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/SGB502500981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1959c5de047743dd95fb738ad078f865b92b8b51042a800e29f9362329dbdf85. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:58:34Z), 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/SGB502504597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x587f3668413b1e8c08892ec424f6ea2f84eaf4cb27850954c85661ba9abce023. 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/SGB502506708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c04b1f34e032758952df8cb612d30da65e7f4600a0f568b5f55e990b91a073. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:25:50Z), 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/SGB502503412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd33f7ad1f20c7160dcada797fdb15fd8229f8c7e9b67b07436f42bac0136a301. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:55:54Z), 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/SGB502501413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64623ab22bc3f4b43f380eb476e107075f0451b1f62462f5c88bd0e8c8b82a12. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/SGB502500087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a348486b5a9f3457e67a7f526ceebd238f76f7dff8faf5dd83807a8458206e. 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/SGB502500119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326dbfa80904876f8e5cd7e17d29b94c63a34db52a9cbaf72427c4a6227b32cb. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:22:50Z), 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/SGW502509151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x719c85880f93066528a34f5848e82d0291f5ee30be09de2c92f07b7d4157c8f6. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/SGW502505607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf03c4aa13a1024a3db9e7beb6ebfa5ca4d16b8834c556f76d09720e95ce3cdf4. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/SGW502504389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe649aa75f423b8abb0e251ed1aa323f43d63ca0cbd4ce7eb1fbb7df1369ef4b. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/SGW502504263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307de2b97c5cbcf69c2fef28537c4981fc6ea59b35047c6f1ddfc8236de5d1bf. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/SGW502506131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665960461aeed6101c8da18b1db3fff2bc5d30560b21d810bc03b86b681985c3. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:07:14Z), 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/SGW502507673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15dee060cf43949a2a37ad058d77814e033330168275982dbaa850941da3089b. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:43:26Z), 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/SGW502503850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95b580af0aa06359644f4142a5ac34c996f4059ab7f3f9e94e6ca3f53ef92d3a. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:44:58Z), 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/SGW502506025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca30dbc52a17e4cdbc81c989fb50948fc9aa13c6c0ac1ce209fc439220c0a0af. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/SGW502502884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335933d516dfea8f9d5751e0899753288cc32f1ad98374e1b6ebbed0d441a775. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/SGW502506761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2789c85f82b1ef30e8737ad1510fb5a4f239a018f009cf67d6441bfb9eebd872. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/SGW502504234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556310bca404b19d037594b450e75ea122f5fd1f8aa8a7e752d9153715791f3e. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/SGW502506257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22f28faccfc7784868bea2d76c69c2a21822f5e2b918c337b707cdb7b2e990f6. 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/SGW502509281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8183d44dd7f186244187805f7bdf9d68686b8dad7fe8500e63c79b5b57249e4f. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:24:40Z), 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/SGW502502517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa5fde10a3c9d49d78f7815cb5a5de477ea4cb06f4cf066af454f5d50fc1b9f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:02:10Z), 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/SGW502506513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c6863bf78dc4a1fb6d0b4a01a2da9dd47e6c047995d65b12f8ba53c14d38659. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-20T00:27:43Z), 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/SGW502502623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f05ff0e32c0952cc5a31523ed8398a4c07fd5a16f0bffaab894753fdf351546. 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/SGW502507461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed07ddd03a7459b2d68b69a32dfbde4a148faff3e67d8d5a8c44eddeb799b235. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/SGW502502419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf48b3bb8ec11d8500ce45224240e828666e0b210efef4f6368065a81def27113. 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/SGW502506928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b1ccdd689738cae2c47ebac469e38b0855e628600e1b02b009b5f33aaef0cc. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/SGW502506224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee464f55aa1cb7ea8371b57a9d261a7f908eaa7f21294f33a8680931d4b4c38a. 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/SGW502508105.