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 0x55eb2af25ce2c9ebfdcbf8346625d2c9f09b9001f0c077ad5e1105658fcea692. 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/f32bab42-e777-44aa-855c-9a3c5ccc0e6d.json and https://artists.proofprofile.net/proofs/artist/f32bab42-e777-44aa-855c-9a3c5ccc0e6d.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 0xe558e4634a676844ee74cac1dafd76555af7c70b3cf07b9fcc0451df748eec08. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/BKLSM2300065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfdc87acb90b13094a7f452c8988de08823fddf7f41a8361e1f089ee7c3e2eb9. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:46:06Z), 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/BKLSM2300078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e2bdf7ab71ca29670e83f78beb6304b0d96825ca30cd31b7ee64a38308abdec. 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/BKLSM2300079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f7bfa9a06f65f1cff817d8926b52329d65cb341e54f229596e11d0085a92864. 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/BKLSM2300080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccaef035d003d425e607a13f5ec5592cc8b96941dcbd17d973e2aec0153135f9. 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/BKLSM2400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x951e24d04437ff5a72fe6993cc2e8d9a747c845e23cdf191e1d48025be3dd645. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/BKLSM2400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x298b76d43fd5dc801ba1de04638dfe5cb0b618335a9fd4d7b3348fd3890e9b0b. 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/BKLSM2400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf26b8d66008f8a44ab372dd217b146a4d87eb60cc56739594d180113d214eeb2. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:24:57Z), 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/BKLSM2400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb0d973f30d2128dbd76f86688132537d04348a132ff3654b625f7a184e6d83. 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/BKLSM2400029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c10225f5cf3c02af49130f3561ca6711739c97e259b1bc02c9c4622c7d274a. 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/BKLSM2400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a1c1be012597f8e42d0f4d7b99826c3bde41da10f7ac31c514302e75c0dded3. 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/BKLSM2400047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab55c708712ab73491c10ae7919ae13c9e5264e072984bed28fdd823474f106c. 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/BKLSM2400050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351fd8baab89085e77cd7ee2703baf1343eeff5e47a47dcfea67e6ad1371ed37. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:05:03Z), 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/BKLSM2400081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae60a61cf56836e921568c848c9f49e089072ff249c342256f7a3d3f9e45434. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:32:18Z), 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/BKLSM2200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d71a86ba00ac370e3084360a59d8b410fcc055fff0e8010b2402bd04f19fefb. 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/BKLSM2200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc611a7d6b867878ecf07faed9f0e150f3970836f0e80ea0220320be4bb8892bf. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/BKLSM2200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4758b7a514cc8987e0ce08b435e0bbdfcc80369e0c91e21ef40a2469168483. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/BKLSM2200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce8e9d5c28ba10375d3aacff9545da8e012db90771af9035d7d46955b1017d5. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/BKLSM2300061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01aa1309bfc15940b96cb129967c4fcd11dd95880f5a32f9efc477a6b0d8efba. 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/BXCND2502047.