1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xd2622eeca2341e487be17c0477d2da11ff5297a9325bef0693098dc056b1cdfa. 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/7a0f4bce-92b3-40a6-b3cc-34c886558c40.json and https://artists.proofprofile.net/proofs/artist/7a0f4bce-92b3-40a6-b3cc-34c886558c40.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa697fe65ac0f96d2fefe187846f6e634ed1a3eb93117f5390848b13ab8aca3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4D6SjcmlfZdy9el2o6P9ZU.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4D6SjcmlfZdy9el2o6P9ZU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce11e21785681569b7554e023d8c469665db1284d675ebd7be3c85c9b017185f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0iR5YzxiuPHkNISqM3SCSi.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0iR5YzxiuPHkNISqM3SCSi.
{"copyright_id":"0x44aee07bbb7d994fdf8bebbf065eeef7f26d15b5548ed1bb7997c5e9d7fc6bdd","isrc":"ES6081641103","name":"Los Mato","registered_at":"2026-06-10T03:35:57Z","spotify_id":"6nleFLa3f2dxorQ0flHd5W","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44aee07bbb7d994fdf8bebbf065eeef7f26d15b5548ed1bb7997c5e9d7fc6bdd. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6nleFLa3f2dxorQ0flHd5W.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6nleFLa3f2dxorQ0flHd5W.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf289aaf1195ee31d6056f4ed754a488361e63e85b200dd87d50ae8b2241e303d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0cuNsH3R0efPZNjm69bqXg.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0cuNsH3R0efPZNjm69bqXg.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d91455d098d3dc76b35669c05a0a427914002894e853a534abac0d3f6fa1e5. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1wWglxfgy9RQ643C5jP9pa.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1wWglxfgy9RQ643C5jP9pa.
{"copyright_id":"0xc08aed169a89dfacd193268b8a27e933fcd871c60fbbbffc2e5c173a6a729e06","isrc":"ES6081641106","name":"Como un Mariachi","registered_at":"2026-06-25T22:52:53Z","spotify_id":"7sq4cw0GdszoxqwJyQXje4","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08aed169a89dfacd193268b8a27e933fcd871c60fbbbffc2e5c173a6a729e06. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7sq4cw0GdszoxqwJyQXje4.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/7sq4cw0GdszoxqwJyQXje4.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e462d05354f413bb77d73fd6d407fe36022e90ee6f00e300794ad86d2991208. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2ZtFNwFdqryFYV71m4AzH5.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2ZtFNwFdqryFYV71m4AzH5.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42b93bc142de232863a018b0608564807f6109c17bf25404a8c0e02c2dcfab48. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5izXJdBH9eRaMkaAOF9or4.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5izXJdBH9eRaMkaAOF9or4.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68dda8641e7708c3e426a463580d55d78d48b0bc73e4d30ac16009f60890d81f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4AAcCn0FMGwpGmaHSaAi8k.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4AAcCn0FMGwpGmaHSaAi8k.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ff88db55a0725ff60f4e5ff136249789a04e3e97857c6c71c854bf5a1a9ea9. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/55B5qe9kMD6MmC118sX6Jx.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/55B5qe9kMD6MmC118sX6Jx.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8483227e3721c51f1cdd55f6f7a8421c8b3d223cc208664b91822f41b4d7dd1a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/66XVPwnSSrRf7JcSo7I2NP.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/66XVPwnSSrRf7JcSo7I2NP.
{"copyright_id":"0xe946f66e299e549f79459ebee3de723c48d0cf069471f2b457d4bbc5cdc00a6b","isrc":"ES6081641118","name":"Represento Doble H","registered_at":"2026-06-11T05:47:01Z","spotify_id":"6HZLmAHpdlxEqxPXjdao4s","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe946f66e299e549f79459ebee3de723c48d0cf069471f2b457d4bbc5cdc00a6b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6HZLmAHpdlxEqxPXjdao4s.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6HZLmAHpdlxEqxPXjdao4s.