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 0xca4880911979968abceb36d7bef9e2c00638ac30af1a0b7b0110983737318fec. 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/fbd2e9b7-3e7e-47fe-9b3a-c8218f4a4f61.json and https://artists.proofprofile.net/proofs/artist/fbd2e9b7-3e7e-47fe-9b3a-c8218f4a4f61.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 0x3c281954118726f6c0249d467d97866dc27b995ee0023034cad4623f3509028e. 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/CA5KR2497622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a77411ed26f8c01113e6b23ae73574253cbf5da0f03bb1b9775d4b341e34a34. 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/CA5KR2497623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a777654c290a92f201988f96d55c8e9c7ad27f1ae5a9a60e86032c20c4afb0d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CA5KR2497624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d93c100e130f0089385e47f102eef47702724a23b55f670cbee62f5841131a4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CA5KR2497625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f74fd82b957e1fdb45ce7599f8b75e9b1ee78de7c64a6ba9690893c4c96177. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CA5KR2497626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0242c10f818f4471d905c9ea4b1cb82bcad42aeccc44d67f61c1e01f71fd6e67. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CA5KR2497627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4aefffce0452fa5e4c0d45ac60adb947822b0a5988eb1fc4b85a47032505188. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CA5KR2497628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9bfae0849f44ece3fc877ae3b772fc76d32a57047d11dc0c5b9abc1c5e5fabd. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CA5KR2497629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6883c0fb7072dc93c0a27c62be47847793bafb390457d39063174f1227256dc3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CA5KR2497630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde7d5dea07c720ccd26c44d65988f67dcae325fc54e6040805f85c585cddd91. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CA5KR2497631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59807321f457b6ecd6ac12ef0a1cc5d29b21c65725f9219cfd663bbce594a5b8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CA5KR2497632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578eed2f48ac0ec56a719ea1ba498a8070ccc134b568f4564a8b8b7f76a9ed3d. 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/CA5KR2497633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ffda632f861e7a40d6ebf105e616957a4ea182d4249e3c74bf25bae998cbb76. 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/CA5KR2497634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe41e033b87bb6ad9a306940b07376aee59d160d6b70be80416248bde41bfab18. 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/CA5KR2497635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a93db00337824925816c415c5bee9cc5c41d7c79d35d4fb8b18a528294e0da. 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/CA5KR2497636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5dc880f14f630bbf3d057270a12468ee000b9c02705cac77b1ce9a4139d3bf6. 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/CA5KR2497637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0cbeba713d9fe077957e9fd75f3d38fb5488c4afa954e2d5d229f0fe525a022. 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/CA5KR2497638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4adaf595ca93b91441639ca586292fbdd4352e31c96603a6fbcd4e9bb53ba98. 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/CA5KR2497639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf88da8cc9c58168e5700a667fe4a710d44e0ecba9f99d0fcef999c569a42b528. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CA5KR2497640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d6537c45466bb208d42ffa775a968bf642b3f8dcbe8bfd6a989d3628a5b7da9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CA5KR2497641.