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 0xe54e4f76758b4ab1f1bdbdd74b78f8ce4b4fd037733e5c2a07237a7c45d75cf0. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/26f088ec-55da-4c84-a5cd-195ed27c26ca.json and https://artists.proofprofile.net/proofs/artist/26f088ec-55da-4c84-a5cd-195ed27c26ca.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 0x9f97fec9afbcfea74f398b05baf59d6c10a2b34c0ab439a96a48cff2b8cfac4b. 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/QZWFR2479025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9996901c516d2e8cddaeb0b0599f04437163632072b6adbb271ccfa593815ffe. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QZWFR2479026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88cfd035e139eda1dbe263b9c303d07561e8b5b89b8a3125eec03c1d4d1c0e3d. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZWFR2479027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a3550165746e142987a8b5a87878260e2265879bb82705927fa52e0fba7e39. 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/QZWFR2479028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x901704d68498fb3e4bb7b197935a8b430c9e162cd8140d173d9b1447db3b9f69. 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/QZWFR2479029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389c6e60b63c74b7f22761f32dacaa85dc54f30a3d5753bb208b743bdc5efa32. 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/QZWFR2479030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7c895844653e0851c5119b64761bc7637b258203fba4b105a164c433ae3b59. 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/QZWFR2479031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee9d655d7063f0c45b2e232bb1bfb71a09ced553aaf4068c47b13be98dd87091. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:42:39Z), 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/QZWFR2479032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2258bbcdfbd8bbeab4594cf9302d1344af324e6e7e88ce812d5a552bcdc120. 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/QZWFR2479033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x547f76387d1f614cc5ffc6a19941bceb78187d44f8f55755615a688864470e74. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:26:28Z), 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/QZWFR2479034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa48d78e34919a8ef1c1c41c69dc7a97ebbdd144bf9973b5dfe7d2f7826a6e70. 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/QZWFR2479035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ebf64f6e3b09595e38a08432db47944cee69bdf8f3ad875d9e2decafccf36d. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:46:27Z), 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/QZWFR2479036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f9d85497ad35b696e2bf4935c961b46cd6c9b7a8d581f37ca7ca9bf1a52e1da. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:09:26Z), 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/QZWFR2479037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf448192cd4587ae1a46c223c0b2ce27bedc3810b261e9e1f7db9ab9e29b76b9c. 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/QZZ762490030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc2889eb97d3e871d58adb22758ab0dd40a559c6a55ba310b55f36d061fcceb3. 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/QZZ762490032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6000b66c950609d09580b8e186f529594fecd578aa98c95dd803e90eea99ba4. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZZ762490033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d1d57ad06a632a9b0844468d0ddcc39114125a984acf634d7dde167b0199f9d. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/QZZ762490034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d1ea3de2f36391fc8993c3e46e144fcbd0b06cc58f87e03e9813f20b5f76553. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:05:01Z), 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/QZZ762490036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd1619b6e15e8f667dc56fdda7e67e4f9492eaeb84d9368353dd24c36c4e237. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QZWFX2459882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x270722cb14437eb20a53ace8c92e2e042c8cd790d0676d308abc0955b980f1b7. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QZWFX2459883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9793450203efeec0078a0c1358f7aee0315eb97aa2b70193f5ddd8a31005eeac. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:35:44Z), 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/QZWFX2459884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e45873bd9458e81aa901c7f5a6eba79b3d2028f1f8e641c5c8070e91d3a381a. Chain 2 (Bitcoin): anchored in block 958676 (2026-07-19T05:43:13Z), 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/QZWFX2459886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a35dac18a2b9f10193c03adf48efadbd7fbee1830d9f1ac7737777d24649fc. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZWFX2459887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8332cd0b585871410b804c0227b8020a53cc165a5a58759480d43a3d7145002. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:04:47Z), 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/QZWFX2459888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a3550165746e142987a8b5a87878260e2265879bb82705927fa52e0fba7e39. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZWFR2479028.