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 0xae5f1038b7b4e65a3ff6a28edc12a96dd840e295b83f7d6e42273e1f8aa9d39d. 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/0372a189-3aec-4507-ad76-8fe222b490a6.json and https://artists.proofprofile.net/proofs/artist/0372a189-3aec-4507-ad76-8fe222b490a6.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 0xccb824fb8e3a222f4a8ada5c73349bf4d86ac16f0aa5dc1e95685bc62fd41253. 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/GB8KE2415295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x284c5cf511041d09fcea280bc1587f21b1e179449881d3c085010d488c249275. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:36:18Z), 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/GB8KE2417121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a6b97eb2b7227c262445b0c34722c833aac41214ebd1b28efecd9982b051877. 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/GB8KE2420239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd0ddc1e89103ba0e0ba7452375c2f030ef1339c810154e88dab0ae323ba049a. 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/GB8KE2420240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87c591fb788a5f53cf43a0d33ac6e6a46a78ffe2bb9bdcb59c09b9d43eb94c0. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GB8KE2420241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x070c0870938ed03077bbd4ce11c61eecb252b28d869846793243cd1ae4c317dd. 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/GB8KE2420242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf346c4e0ee3a42e00511c632230b08fc9b94087dfc8324ce5deb56c752ab0d. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/GB8KE2420243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff8ae45100c9d2e670c969001909840fdf1fe69bac6e91ec42373958fcfae7ba. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GB8KE2420244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x787fc65ebadfd916e64e7ba7209d23e9d5cb3e3288887644fcde41ace16bb5fe. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GB8KE2420245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x258b7bccb32f6a3949e920fddcd00d7c37693b05a620a3555b8d579303ba4ece. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/GB8KE2420246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c87e2e7238c61cc44e57cc3fa19ef838d5e7d9b93932fd875c40b6b19e275de. 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/GB8KE2420247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a349cafd1236bc5beedf13a6ae6903083c6c7ab90f020d7c4b8d114fa72a0d. 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/GB8KE2420248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb9d6f4014319d984d9f2cccaa426b18e49a2a6c7e5a9b5b326494ebe5dcc88. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:57:15Z), 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/GB8KE2420249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x369fd3c8f030983b443a9f087e2e759749647d117863a0d3c0ee810f4be0d84f. 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/GB8KE2420250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1bf1115d2ff19aefdf765ecf6766cbb36a16223347c92c35c005a5173b3d520. 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/GB8KE2420251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1385f527b250e2c2cbd6733bdbd100daa40fb65dabcbc982bc3e848cc391d4b8. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-19T23:55:15Z), 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/GB8KE2420253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda98b875bffa5c116bfa4829901d2c2b7bd461be6e69ba16fe58625c79c102b0. 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/GB8KE2420817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c45da224a18af69b89542f0c33a594aa8644340c7a945fe2f44136ace9056ab. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:05:19Z), 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/GB8KE2424031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14cea98729ab5e69aef11f4d79b70e80f76aff579baa53926e4abbe7d90e9faf. 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/GB8KE2424566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9fe792c7fb93f628fbeebf78a141aa00cd1c26ee9f125794a71c48120940f6. 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/GB8KE2426429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4564e1b83b217632d6fbda39269bfbb9412ea6aa5f087871b90283678ea84f50. 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/GB8KE2502485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0951a24a4fa8319cf8c8b638f1a2776e3c0827328b5cbfac6a33ef3afc3453f. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/TCAJL2502851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1091884be84fea7589a8b7ee06a0989a15f45c1d6ff121fcad5df9c42eaf224b. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/TCAJL2574455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631131992262859ab2061799c0f46ec8c36ac1cf7a32d8ed69301c762fc39e0f. 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/TCAJL2583929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c3378014cc53fe5223f3b4901774fc0daca034acd95f551104b2f677df97d6a. 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/TCAJM2544839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f08ea145d370244a5abbb63c6a66d59b972b40618a8fd3c3c5cf59a3508b43e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GB8KE2506043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a289a03b9c74f272a18946109e2f9e212f7a94cb97a691a19637c7af5444621. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/TCAJP2530759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d02e2a3269a0c7f6976bca6d2b685d48a02363c98895c3755f84cd05f0b698. 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/TCAJP2558758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc65452a85fc1612ca4174d9b50b6702da64b44571c2aa2b33b504a456648c19. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAJQ2519364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ba4d684f795b856fd6a17a518b394b817f8975908b0122a36f2d2fed691657. 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/TCAJR2527900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc6f51a672d3a836dc8d12b1edc400ed92aa625f93842f36fbb402c1889afce. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TCAJW2592996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x434fda08a3827c04091351437608d29e98e66cc508c37a66c7e4db01beab77d0. 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/TCAJY2513914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf3ed616587d0259e36ce32ce0db7fd0f4d756f7b5327615fe1e645e9612bf4. 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/QT65Z2527429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65d4c15e5b41cab02ddf1b290456efbdae453195043b216263036202ceb1d31e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GB8KE2425157.