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 0x669724f3d075d6e39c89ddfe1bfd562657f61f47c3031c12b6114b92dec727cf. 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/9169a724-82fb-4261-9775-497bf0f3a9f0.json and https://artists.proofprofile.net/proofs/artist/9169a724-82fb-4261-9775-497bf0f3a9f0.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 0x623caa0467301f2d01905e43058be2649b6166044b17cc3d50c2ec7b3aa1dcb8. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:37:37Z), 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/QZ4JJ1818322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598b5b7ed10a28a8507ee5dd42e170cd3a8958dc61fb7125051ce2b4f3c9a7a6. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:05:32Z), 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/QZDA51933657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50d891aa24ff2ba7d31a3dc6ebdb6dfd7bb754620dcf277ff025c91489aa8b79. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T14:01:47Z), 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/QZDA61991059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72b83afb31dcdb3cfbfdf96ce5945fcbd23239acad46cb655e194387c2d81e5. 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/QZFZ41962153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1685119774ca8c1ac2f7bfd453176e96af133e3fa58a983d131838762126338. 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/QZHN41981756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x653e2ab2766588503d004fc42befdcc2dd0fbdd397844818b730c01826aab348. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/FR96X2011437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7487a9fa0ee9ce0af81a293fec70e182057c6a8646ca08bee90b0a13c221de1. 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/FR96X2011438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6964b4e929f61e74a4ff7ec83cadcf36bb7cdb43ba637f732448ad2b9c940adf. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/FRIDO2110851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe412beb1c2bdfa536df940468a763b399ebaa1943fcb2a2bf8cc892a4391b0ff. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:08:44Z), 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/FRIDO2110849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x869983c2f61e9816e665f597029142b46c44399ee7c7dd6af205a15d846a1acf. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/FRIDO2111417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28b1d547e8c78656e5ac6ffd5d1d0885dae5c90218c4f479154926f8e2d9592. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:35:33Z), 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/FRIDO2110862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28b1d547e8c78656e5ac6ffd5d1d0885dae5c90218c4f479154926f8e2d9592. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/FRIDO2110862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed78d87f10b6fbb1d86baf5a9c45a27c34a014b2afe8948b7d09c377ce64a60c. 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/FRIDO2112459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc96ee5ced0d7ea613b464435bec806d21b6ac7510c9b6152f9c8bc44ec2017d6. 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/FRIDO2112460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x422ebfb20edc3665095f83a2a5b1c1561171b19e473f0b6243d9633c060beef1. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/FRIDO2112461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa046ac7280629121d7408626e6a8be415b4d51e97cab824ef4c60c96eab4e006. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:20:33Z), 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/FRIDO2112462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1952296e5fca2c05fda820cb0d6007866a00c899b03df3aa3cb253bcec4467f. 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/FRIDO2112469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd635aadd37a7db3a55fa3cc1156375a1c961c5a7db5ffcb0258b12c3386ddd24. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:07:10Z), 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/FRIDO2112518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8f4bc311ede0277942f243148d44bbe252fcacd525fefd8ba81b0f4cf7a3be8. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/FRIDO2112519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa162148f238e1f8113e4129bd2405906224f3d9d2e233f04df719cf59f86ddc7. 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/FRIDO2210918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22859597b5bdcbefeab6f25ec4bf1337d5a8534c655f2ae0fcfcce349a27f398. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:59:40Z), 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/FR9W12331702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a41f27f864292f9e1d5c2a757c1a7a8959327d13a74f46abb64125d1627953. 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/FR9W12331700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f00e5fcee290be6274982e6cf4da795e6a25dd687acc054d7e87710aa4090fa. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:13:21Z), 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/FR9W12331701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22859597b5bdcbefeab6f25ec4bf1337d5a8534c655f2ae0fcfcce349a27f398. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/FR9W12331702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03184deffad6b15ebe9df08e24b3c6a14b5b3bc37687519ed94cddde93a26cbb. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:19:23Z), 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/FR9W12331703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93f9d42db5b0e4926b2625fb61882a128edb853b363a6cde433e2a1f9b4b487a. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:52:47Z), 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/FR9W12331704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf12f85bda54ffcdc6fc4f59775000dbe5a8f2a8d04e146b22e566891ffe5f6a. 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/FR9W12345592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa243808919742cc1288075f4421f9fc69607950134d30a9f253a65c81339cafa. 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/FR9W12345584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x531606e5c9342757250142a720d3d56a42401a04b93a4ca33c85b66490e0f737. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/FR9W12345587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x707cdaf81d419434b5b0fa14fa10675355d1eb83aad4368cc9705931e406470c. 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/FR9W12345589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a2e2335cf30c906f8ef96967b62b327c86963f4626f50aae6e696c668ff853. 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/FR9W12345590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65df3f27875e7b415a70bb0a625b27140213639bba5289fb6a7eeec113046a65. 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/FR9W12345591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf12f85bda54ffcdc6fc4f59775000dbe5a8f2a8d04e146b22e566891ffe5f6a. 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/FR9W12345592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc6ee7c5e2560093666dbed2b21590f6b06901a959f276dc6cc15f0e7cc7ecbd. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/FR9W12345593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc37831a2e04388aba778769e2239cb694d0bfe32e7f6aa10334bd09267d208fc. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/FR9W12345594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f5ee0ea1ea539b16acd0bdde97f790cd6da3d156ce6bbdfc236b5ad36ef0cc. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/FR9W12403405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5276314525081f19a80e230a6d0f6958e8f6cf6bccd0838f074d375f2ba61daa. 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/QZZ7N2484448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b03fbe9e944315e700a07e650735f54ce6ac5b6015176a9989656ddb3a0d554. 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/QZZ7N2484449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a93c9b3c9f7b775fce063581d1297d3a1fc001fea80c35f15eabdbd3d10d2d. 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/QZZ7N2484450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70c805b0c4c68dc08d94b48158c0629b9ffc216a5e84acd6762561478a01f11d. Chain 2 (Bitcoin): anchored in block 958647 (2026-07-19T02:36:14Z), 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/QZZ7N2484451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d93ff7ff0946bbbe58b1e97d9f6edf619e00ceafada2463f0a77bf3e5734a6. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZZ7N2484452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc44485a059855d41e90437e63c7e54592c68fe5862d59f18fcb99779837e6c5. 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/QZZ7N2484453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3615f1b96f8814a948a2167c098aab11c4769034dbd3e4e124376590595082de. 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/QZDA52516968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ed9f5a1a810e59716396460b9fbd11a74d8f0a8d47960a31289ed7ed3e6cc2. 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/FR6P12200420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76cd2ff3780ec89680bbf52f5e3fb84dffa7af09b39056ef12f3bd998857b8bf. 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/QZK6N2172421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f584d2779c0779aeaab96b36fb5edea500ea479ac9c138a54392346ee462ab8. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/FRIDO2010450.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch