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 0xec5e541d9f7e479c9d0044b6182ef5d40729cb3a11a39d4a77942c90ff684576. 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/4da1fe21-3fbe-4a83-8d2a-4c42438d3960.json and https://artists.proofprofile.net/proofs/artist/4da1fe21-3fbe-4a83-8d2a-4c42438d3960.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 0xe18a505233927ae13ce82eb556612b1dc0a896ce596c57af32260ff9cccaeb58. 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/3hOnlnRyAFPIQWfcF2igKE.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/3hOnlnRyAFPIQWfcF2igKE.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1268b95c3ace488814d63556408c5b80f70c3d88ce00acaf7fa5534265a7255. 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/5I4ja5UXbcfQ4ROqYGMJjp.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/5I4ja5UXbcfQ4ROqYGMJjp.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a62dcf50fe817ec6a16332aafbcf98b92580ba429cec6a7c24931259046429c. 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/68lxnWY8oISXyBygXVanle.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/68lxnWY8oISXyBygXVanle.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11b30a048245059a54ef7c7a2f3d94f1ece77a43580370dd867c8c14f4e3984. 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/3tbygi01sSjILL6HnGUmUd.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/3tbygi01sSjILL6HnGUmUd.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf722600f95d117941953e714d9416f72a1dce07531f684b675d50247fde57fa6. 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/62n53jxI9xZ1bmGgvkhtum.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/62n53jxI9xZ1bmGgvkhtum.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93275887491ac7c6abf72436339009f1bab93d1f64cc0f5c1ba4536846dbcad8. 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/3wlIxnzqGZ3utNrYZTiNjA.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/3wlIxnzqGZ3utNrYZTiNjA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104eec691ac5eded1e8e8a87409e32315e38a94df669e52142200071fa893f7c. 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/6FkQCl9AjmxnnpYqzQ3cnx.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/6FkQCl9AjmxnnpYqzQ3cnx.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c01f505c30932bfc401e31960c720b8869dfce7f8c298a877d1e26ead0276e4. 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/5H5aBwwcakY8SitOYGvnqm.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/5H5aBwwcakY8SitOYGvnqm.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaceed3e7cc9a80eb13e9d8a47c68be1e18ad98a9a562850b995eeef04b9e0700. 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/1cuFXa871yNNzC95pDzsIn.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/1cuFXa871yNNzC95pDzsIn.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1830d638003660ca2c73aa7a9fc52e9859b28c3c56cea45f888b7afb045f0918. 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/6J67D8li5oKJWhB4nILPk6.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/6J67D8li5oKJWhB4nILPk6.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e6b5a106b784671cbae3628e6b451c7d11d946e2bcc6f18f29a86db8fd55f6b. 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/3eQhvVgbn4uL1JqniTQDdZ.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/3eQhvVgbn4uL1JqniTQDdZ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5760f9839ebf51e34f28a0c72b1b1b88f34ba491ed9e28a4c61ffdf3ffd873cd. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5GTql33ARip9i4Tc0CGfjn.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/5GTql33ARip9i4Tc0CGfjn.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5576b75d9520f5673a5c7da5d124cf48ac36549de9bd03c2f5e1e2af1ecfce53. 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/7sb5ezvidF4oeXDcFlb9DQ.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/7sb5ezvidF4oeXDcFlb9DQ.