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 0x33caaf88be839d9682124a6fefb13e04b8d982fe1af78942fafa5bbf870e3c00. 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/b64160cc-a75f-4ed7-85aa-11c5d17202bd.json and https://artists.proofprofile.net/proofs/artist/b64160cc-a75f-4ed7-85aa-11c5d17202bd.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 0xb432eece250c28fa918ccb156cf1c1e38d8439ba88c1108bd82840af5ef2b91e. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:04:25Z), 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/US3DF1721569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe997ced1c9856142e6e1ed7e18d1c196c6c12651c60a1c860c5e36eb0db99700. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/US3DF1721570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b250f99c977bb89727f4c33c0e829c0ce9221c118a3f1b0123c95c8c0986e6. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/US3DF1951970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef30b556eae309cb5c6a739b32338a37701c97e82177ad7ddc091746c75fb73. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/US3DF1951971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa758df1ce5979a6d1836a7706ed6e64579a9a0c35372ef9537f8b840e469257f. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:22:21Z), 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/US3DF1951972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ebd0c6bfc945da2791d042fef26696f4bf3aec8dd0805509e18469e4de5d1e9. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:56:52Z), 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/US3DF1951973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db0cfadb06257eb52a3390f3ba38dfc12d4213fe52e7f1e4012f9dbcbd30457. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/US3DF1951975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a759dbc40820cf28b2ea7154f0801a67cf8100f231e92bda3cfa9bf7534d06e. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:06:02Z), 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/USANG2098036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4362ba2a77b9911b7bb8ebf8a73418efc856f4b5ec6d34ef786333074ae913d. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:08:38Z), 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/USANG2098137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa819e65b722c1c7e21e08efcfccaa77af775dd99e750ef27549777246acb1a0e. 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/QZNWW2483659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x450db566a1f1a06d551e24e0b02de7c0baf6de41e0e7d9401345e5153c941c12. 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/QZNWX2486667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9484fe2614c22966b3047749317c6c5a165eb61bf89c42951a6cde5d125cedb3. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZNWZ2456828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1403afada55a897ce1232f426d3f42cf59d92cbf13ffb8889014f77c35867ad4. 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/QZTAY2474692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ff715eeabcbcd357aadf0db593ae726ba155d53a7153925b83a2d7f6692114b. 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/QZTAZ2405523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf62f58eeeeca95738b25478e2600f4fe0e57677235172c663d7e4f54b4a47f6a. 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/QZTB22459873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec5285799b15b8325c991572f8089be6e50307e29f3ca7c03dc70976038c2a8. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:22:58Z), 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/QZZ772454067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eaeb22064b42eef9fe0b4a1a3183b8126c1be859027c5f945fb6e14c2714f9b. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZZ7N2481876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4238cd71dd09806e5791c51860b499029f340211ae26130d31612c9039684d40. 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/QZZ7N2481878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593c3a40643687d7e56f53833489a50c017eb4a0e3b9a37cdc5f0ddaf9d6c806. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QZZ7N2483135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b3d7d9ed3026336d1781e3f249e10651fb0c0923bdf66b7453b8489e9bce6ed. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QT3EX2405091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d215f829ffb471a4997d512837176e84fd2d9d19defade00cb228cb2e9fff2. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZFYY2540378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6cd91db09e4a5368f085c9a06ac5113871bf17c6ab069f07b37b3f2204bb018. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZFZ42571644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf55a26570ab67f52b662797b9521f362c485a51ce4874a5a9393c2b36288525f. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-21T22:56:27Z), 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/QZFZ42571645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa027deec7a615f956bd72698ac40af35115efd35b2b2de752ecce0811e71b143. 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/QZFZ42571647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d2dce7545318d2a98cfe5a17ce3dca88a1bd35da40222378d7435db6cfb28f. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/QZES52579097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc821d943c8ef3a954df6768873274e455a278622a688573aa937e63bb11cef4e. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZES52579099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf871653e389dd6e388eea77c4d2103db270d487125353aef3fd7479d8d7a8ea4. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:06:51Z), 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/QZHN82523767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ee23afeb6ed888c5841485709e6fa1583ee44452628d95de13824f02da6b7c. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZK6P2521291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4acc4ae80f8a3126c5fefe6f6134d626645277df715ce0fb5b872cec5d53c909. 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/QZPLR2501213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4190c2bf3a146aa393ec25b18bf3629af0b748ffef924f00b97f22769c7d6bbd. 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/QZZ7N2524560.