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 0x08e605c483291a4b2cce88a7489a28ee2d46c5a8edad784f8aae05e42918ff4f. 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/fc1946f0-3186-482c-a24d-a8d830406d4e.json and https://artists.proofprofile.net/proofs/artist/fc1946f0-3186-482c-a24d-a8d830406d4e.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 0x82273c553797ecc00f6dc10b1d2f14a0f51f36d1fd92b45739cdd5ac4754aa9d. 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/SEYOK1412830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38cf0c0cfe74eae865da69c8902650b3a316ec259db0b351ec1d9f72f5800d0e. 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/SEYOK1412834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b70fb78deabcf8ead77406ae38d0a1ec7c011c6c3bf093c6c335ffe5b3f7fd4. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:18:38Z), 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/SEYOK1413430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75364b9ca4df23c45b1e00a1d64646ce0657c11248734d0b4bce3a91f61eb7f. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/TCADR1831808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5f15c78654d8e87107d2d32685602df6b2d45bf81b40a0341d0a572eef4ab0d. 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/TCADR1831811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58af8a3a342a2cde00b916f0bb87051a5d2e58f9441761dd1629141a1943ce1c. 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/TCAFI2162507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac063249a3dea31e068daec704d9551dd582ecf8504e139dd4f4a238165d4da6. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:41:44Z), 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/TCAFI2162509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc057ad13d3b5e258e0723171aa18844054af939966539be1acde609800a0af90. 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/TCAFI2162511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b8c024559bb8e2fa91aa4c3020713ac40758cae1738aa0ef12462a890415cf8. 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/TCAFI2162513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfbdf6e5a760583ea90d91f7f8c79c18fda7671ac3575c6086602e779747a2a8. 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/TCAFI2162514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8441a672066f87a8b25b40a308c1fde81c717ba322ee38fc8a13cb218c47d6e3. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:22:43Z), 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/TCAFI2162515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a6eaf69454196900d188a348fa62a44e696af8967167093e211e70566aae75. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCAFI2162517.