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 0xa67849fa4a37ddaad9fa03d002600ad602f107b61e8f3b9b10b3bdb9ce2b6611. 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/ea3e2a94-c117-4b50-b175-07aa701421f0.json and https://artists.proofprofile.net/proofs/artist/ea3e2a94-c117-4b50-b175-07aa701421f0.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 0xb23b66db8199241e6a5192bc7a7dc0ddd082ca7b5de3095c0c3626d8b64d860c. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GX8LD2326096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa30031f4c3093234893015a74b072f7809290b2eea29fef15c4d91ddb08b94a4. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/GX8LE2309761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e476d4899d88d56840b326d7e5e5a24ccfd3f28441d9eeaea1bcdab9ce9b48. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:29:59Z), 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/GX5MX2399483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c241eea3fa694dca96e68f359250c12721495d7e6276b648bad826dd57d140f. 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/QZMZ92416420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d91a53c35110e3f762c83b0cef7a932280bc2e280c4ff7b35e6ca484912d1ea. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZTPX2458000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x678aa2bccadb14f82330196765abff72d6385bd8550d6528d4b48292467b65b3. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZW9M2407169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0288d55e04a8b04cf6bcde3e4fbcff26e379cfd0f6b791d7f697df3abd7a699f. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZW9M2471407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232727c060e43afcea9e43292aae56d66e5c0b927e0bcf21b4fa5b55319dbbd3. 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/US7VG2561174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddad5983eb3f7527dc76aa7d5a25e853e55d9b98deea1add3b4a11cf26df11fa. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:15:52Z), 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/QZGLM2528397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908683d82c52fc96c9126c05a51600963c744430a1431b1acbfa1538bf085081. Chain 2 (Bitcoin): anchored in block 957705 (2026-07-12T12:50:42Z), 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/QZGLM2537329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff6cbaefa3fdf965036a52b0f7d1740ed8113868f7eeab6f2d46eae237fbef67. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZGLM2587325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb0c05f4db20d7f14aa6eca0a886252c06a370c3fa258b2f21dbffa5ff99142e. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:28:07Z), 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/QZGLS2516230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c8763667534535e5d0dbca9a860d821f095084066403e5428c77b47a3407366. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZGLS2569513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8495f1b3e1aebdafb0f2c14787406a72dd33edc1c627982016aab7fd5a98d95. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZGLS2588789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf571dfd7ff6b97fa3c89a474dbe4a98b586c0a7d90fdbb2624bbcf946a85f6ee. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZMZ92544152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea04ae338947e4e455448844ceceba7a9504a3ff4b6acae6640975955b883d97. 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/QZMZ92563415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc77e4007be1e04b6e5d20dc66b596e3ad6a8347149e71539e14535a7ed3ddf59. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:30:47Z), 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/QZNJV2594371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9af3a9c81d0c3f9cfd1fc11f929fb54eaa4622a754c2a13aad2597b8c7e5bcb3. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:30:32Z), 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/QZNJW2522274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a8c74314f4b0cc63c289f10b4a1da12b4e41c5671de12888bbe241dca96f44e. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:47:48Z), 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/QZNJW2544662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea48e65ce814635d65e536e1783e56ac31496850c6e0dee67b150a5514b7de9. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QZNJW2565250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81415be20f50b18606473856ebfae62e673a6a75335c86258b2f88c9291cdd09. 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/QZNJX2529716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea6651284e889dcc5b8b8b28dee41e05d0ab932d46a2f6905ef911afe29015c. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZNJX2529984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc738dd20cbe902c610e5f9b34a352269f0bcd4ab253fdb100b8a6ebfa8b50662. 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/QZNJY2521044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cef23fcd09445eb40c22fcf2650f0dcb2c3e91ab39721d4cac8d44c7c9627c9. 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/QZNJY2537198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d6e0fbfdc5cdc6dd7672cac145c52e13a4aac572a0e2620b086ce6e1a262f6d. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZNJY2559418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe31a0a46a83a9f0909f81f37a03082beaf6d0729a928bfa85d60fceee1e95b63. 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/QZNJY2598816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540f621be20b1a585e285c21c906140db67d731e1eaf40d29275698af416a043. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QZNJZ2558137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf094a1afcd21dd99e927659604be6465aae1485f7b18e20ce06d479e387eb3db. 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/QZTPX2539278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d4c4913c5cdddf460b3a2a591c92135f6bb385bfdfd71fe270e3c49c654f9e2. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZTPX2587422.