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 0xf968d5f04797dd3c706c9780e73f8b978e9843e79192761b9a44f5e00dc1612f. 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/e266ff20-5aa3-44e3-a3a0-9fa898710478.json and https://artists.proofprofile.net/proofs/artist/e266ff20-5aa3-44e3-a3a0-9fa898710478.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 0x3f2734a39803dc69510c44a313101c0794c3bc5b4920cbf71d6adf6ff2434f2d. 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/35YCphGsAco80BWLCLLJu5.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/35YCphGsAco80BWLCLLJu5.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab938505d050863017922ec3c79cf420b1af0ead5830b6b39150db19daa5cac. 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/2fn40i0Cc9zb6sb7hQkEdY.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/2fn40i0Cc9zb6sb7hQkEdY.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b521f6ec98e59701613944ffa34f22e24f15d4b146f0c73dba568958309954. 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/4EZ2yyOAYGrULjAaV97mnG.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/4EZ2yyOAYGrULjAaV97mnG.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3b186761c22535a271f47e36ccadc3e5a9fa1083a1f9b24379ec68c668334da. 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/61jNLjoQMLCnGjeUlHfwkg.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/61jNLjoQMLCnGjeUlHfwkg.
{"copyright_id":"0x069e386beef3b03d79d2e2f7215eb2dfb494f539a01532138ee2215aedb3784b","isrc":"CA5KR2461921","name":"Hesitations - Full","registered_at":"2026-06-27T20:38:52Z","spotify_id":"4TrcNEXCtgn9k1VdkcuRbf","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x069e386beef3b03d79d2e2f7215eb2dfb494f539a01532138ee2215aedb3784b. 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/4TrcNEXCtgn9k1VdkcuRbf.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/4TrcNEXCtgn9k1VdkcuRbf.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc31338e6df2c6795b9d8b1e40df084d4272897332b7375d67ccce466c0807366. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6pvFIWeVlYER752jv0JoSw.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/6pvFIWeVlYER752jv0JoSw.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26663cf74b0798a7341eb5d5d551770e03f20b03fcbfe237eb9774f1eb1440e8. 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/2OqZ8QgbhFaX2iFYBqVcPv.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/2OqZ8QgbhFaX2iFYBqVcPv.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90082f3288203e7b7ae2e353ded2d6422e5a5e34e0c91fd71202d5baa51ba780. 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/4Z9P4uXjhboVPauhIAal0w.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/4Z9P4uXjhboVPauhIAal0w.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcf29f5a3df214a3a3a99726300ccde0a12977499c917ddcddd2a7a658e81967. 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/7wB5rI4uxRfSMHvRyHiFzB.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/7wB5rI4uxRfSMHvRyHiFzB.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc31f902910f6948036d37647787c0489a4033a52500e05b979ea3b4614ebb9fb. 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/4B1zjjkieGKk6jZikofYb0.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/4B1zjjkieGKk6jZikofYb0.