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 0xf725ac32e672863e6bba2d66a7a2a8c27cf73196fef5fa3f6617edc9a3cf94a0. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e7f7c3cb-154b-439e-ad6e-af1a2f443434.json and https://artists.proofprofile.net/proofs/artist/e7f7c3cb-154b-439e-ad6e-af1a2f443434.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 0x609c5ab74d5407c43e7402cf3f7cefea8a69cd047d2c81cc97cbd16ccebf4932. 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/7Ky4jZMNUISu6zaN6B4Np3.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/7Ky4jZMNUISu6zaN6B4Np3.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be6407afa32b3e3a1a148302e341fcb677c1366c452da086fc47144b6b7f969. 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/7pGD0TBsDI8VhBMToMaK7K.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/7pGD0TBsDI8VhBMToMaK7K.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58fc8b346d8a2b18f0e934977f8de48d7bc4c1088f201efaae7451fd33c3b106. 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/74vcLyBayWvQEZKZMryXjE.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/74vcLyBayWvQEZKZMryXjE.
{"copyright_id":"0x5eb86e0ffd7f454db5acdd8a9c8f22d37bbd956d80c430fe1fb27a236e8f0119","isrc":"TCAET2064633","name":"Mirror Image","registered_at":"2026-06-08T00:03:19Z","spotify_id":"3C4YqfLaNtpgLNnbCXsVM2","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb86e0ffd7f454db5acdd8a9c8f22d37bbd956d80c430fe1fb27a236e8f0119. 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/3C4YqfLaNtpgLNnbCXsVM2.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/3C4YqfLaNtpgLNnbCXsVM2.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d589be3203d57542451870e48a207c4cbf18899fee4f3324e970820caa7e579. 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/1tMxvHhoDImCLLjOjx1Hbr.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/1tMxvHhoDImCLLjOjx1Hbr.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51bd74b0c1b64df5d93888497aaa75f3b3d90fd1f9c42e5c25ce5b0969d3cbd5. 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/1tOLDjIHywDlFyCZe5Zeaw.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/1tOLDjIHywDlFyCZe5Zeaw.
{"copyright_id":"0xfb8514ad4d4041532e7517b63c95088c50f85e9ee6fa758f532bc6ce7efae011","isrc":"TCAET2064640","name":"Tomorrows That Follow","registered_at":"2026-06-04T08:34:35Z","spotify_id":"3CmbDtBTbcB8r1EDi2FSV4","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8514ad4d4041532e7517b63c95088c50f85e9ee6fa758f532bc6ce7efae011. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3CmbDtBTbcB8r1EDi2FSV4.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/3CmbDtBTbcB8r1EDi2FSV4.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ed845c06fdd20ee6e4d777b83337b5312ec383a82728074947465dcd6f23638. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5Ju8bmTFToRU3gmgSSU5jm.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/5Ju8bmTFToRU3gmgSSU5jm.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4200f4b49638c811a45afe016351ccfadcb17a9741ae2ef4954e6ccb0095ee65. 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/29sQSeSSdOyiL04lrAOH4C.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/29sQSeSSdOyiL04lrAOH4C.
{"copyright_id":"0xe813a770d78bca46fdfcfee6c2f00818906c061791f23a7d4e37ba9da2a320d4","isrc":"QZFZ22010914","name":"don't fall asleep yet","registered_at":"2026-06-04T10:10:07Z","spotify_id":"7sQhhSlMui3JOZ4s2j4IjM","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe813a770d78bca46fdfcfee6c2f00818906c061791f23a7d4e37ba9da2a320d4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7sQhhSlMui3JOZ4s2j4IjM.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/7sQhhSlMui3JOZ4s2j4IjM.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0614557543671157f30768a1fe5c7fbcafae4aec7e6bd63bb4c4edc2003bd627. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4ijnxMhOU6UtIHV5BaRmYV.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/4ijnxMhOU6UtIHV5BaRmYV.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41713da4c2a8197a22f4f9bb21e12565cb1874bc119c9724f6e565b7f961362a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6A303sXMv52lMSASqDw2zS.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/6A303sXMv52lMSASqDw2zS.