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 0xfabde62e506abeed60e0c1222c59382c0509174135533c8aa949e1cbf72b8e35. 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/067754c9-ba6f-4778-bca8-92b493032950.json and https://artists.proofprofile.net/proofs/artist/067754c9-ba6f-4778-bca8-92b493032950.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 0x1f1ac4a58e8c20e4b7a4576123c81d20f1be1ecb12addb55cd48e64a28744d77. 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/5FkfTEMLbYT6JF7qiFjgdC.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/5FkfTEMLbYT6JF7qiFjgdC.
{"copyright_id":"0xec0856fd52990aa87757a754bf86f93bca27b670e0bbe5f26aa72f57c813b336","isrc":"TCADC1765173","name":"Amore & Psiche","registered_at":"2026-06-19T03:36:24Z","spotify_id":"5xwLfMUYCTYqDWNpqRkfGx","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec0856fd52990aa87757a754bf86f93bca27b670e0bbe5f26aa72f57c813b336. 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/5xwLfMUYCTYqDWNpqRkfGx.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/5xwLfMUYCTYqDWNpqRkfGx.
{"copyright_id":"0x57c8ff9b0602dcfdc447181b15d9d4101fe548b62ec388a68c46ebf48fd39986","isrc":"TCACU1650484","name":"Due Lacrime","registered_at":"2026-06-19T22:47:19Z","spotify_id":"2LwQTQtmC2VamRFVONCTIe","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c8ff9b0602dcfdc447181b15d9d4101fe548b62ec388a68c46ebf48fd39986. 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/2LwQTQtmC2VamRFVONCTIe.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/2LwQTQtmC2VamRFVONCTIe.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c5ceaa0eae8f640c654e451ed0afbe2141c890968a9e715658d6fefe754f030. 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/27P4qJmWLKH0SBXHRVg2CS.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/27P4qJmWLKH0SBXHRVg2CS.
{"copyright_id":"0x6abd8ae02da143001c2808b7cacee07e8ca9819ef8ca644e71ccfd91caec8ce9","isrc":"AUMEV2425513","name":"G Major","registered_at":"2026-06-25T05:39:51Z","spotify_id":"4sWWFz5skPqpCTFbcgL96Y","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6abd8ae02da143001c2808b7cacee07e8ca9819ef8ca644e71ccfd91caec8ce9. 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/4sWWFz5skPqpCTFbcgL96Y.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/4sWWFz5skPqpCTFbcgL96Y.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b03c409adc3e1309cfa2c4d6bfbe045663c2cfd5ab149e1fa127ca12bad7f0a. 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/0rorzgwcvnOfbH0tDyRdre.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/0rorzgwcvnOfbH0tDyRdre.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b584930dfdd87451b3ae62e4309161009bc70d0ed07aa11d3d34c5429c4b2a6. 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/0Iv2s5vXzUAuaAN1rrldz2.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/0Iv2s5vXzUAuaAN1rrldz2.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c56d6e8cb24ebb86637c0b4ececc2620064650f76ac96a9fb67a04eb50d896b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7mu6M8gKgBTDE7AOJIpBel.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/7mu6M8gKgBTDE7AOJIpBel.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b0380cc67c808aae8549e6177deb805a23394eb8053f0ec661d4595e0433fda. 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/06eYRJoeBYR4PATdux6Chf.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/06eYRJoeBYR4PATdux6Chf.
{"copyright_id":"0xbbdeb982d0cbb4c8233f0c1b953649a0ba2116c0cca973cd875af7f191e0e339","isrc":"FRX762170495","name":"REX - Atmospheric Version","registered_at":"2026-06-08T17:07:37Z","spotify_id":"7suxebccL8f6kFpS0Ffbv4","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbdeb982d0cbb4c8233f0c1b953649a0ba2116c0cca973cd875af7f191e0e339. 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/7suxebccL8f6kFpS0Ffbv4.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/7suxebccL8f6kFpS0Ffbv4.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x682abe7882b1f50c1f77bc490a361118863c195b43699310679f088c6055ebff. 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/1U4XJITDIVgTOSbnsYNFaF.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/1U4XJITDIVgTOSbnsYNFaF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6332387f309b4ec8aa9e0e136070e1564f352c43877188bf366eec3d284de62d. 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/2VTZEXU65oG9kXKgYnrvgp.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/2VTZEXU65oG9kXKgYnrvgp.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f6ff033c2fabd3e980db4f92308af145fdaed77796da129b59657c87fe3c86. 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/0G0IXNYR9x2g5VTl32DU47.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/0G0IXNYR9x2g5VTl32DU47.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f1261ab9309941c2a678e349a4156c040bfe1bf8cf0316a917e87b7913f999. 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/5N2LrOQBh2uI2un9QaQKed.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/5N2LrOQBh2uI2un9QaQKed.
{"copyright_id":"0x1c1a4ad086c77c39211df7763c54811343cd212b0215cca767208d7bf7eaf2ea","isrc":"TCAEZ2037435","name":"Inside the Whale","registered_at":"2026-06-21T16:49:12Z","spotify_id":"0JAwXeFNGnKwHHBHBVWbZd","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1a4ad086c77c39211df7763c54811343cd212b0215cca767208d7bf7eaf2ea. 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/0JAwXeFNGnKwHHBHBVWbZd.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/0JAwXeFNGnKwHHBHBVWbZd.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa48456e53a60b9138f19b0430a5c839eb700768fc70576cfc92a30e7a196e3fd. 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/3UBnxflSxtUrga5msg09bw.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/3UBnxflSxtUrga5msg09bw.
{"copyright_id":"0x4b892a3c422dbaef19b88915af26c4ed6b06e819d15527ebf48f3e8734b0359e","isrc":"TCAEC1926907","name":"Mother Night","registered_at":"2026-06-08T09:09:38Z","spotify_id":"1gRjQIWMYT6iDqHj5Op8Sm","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b892a3c422dbaef19b88915af26c4ed6b06e819d15527ebf48f3e8734b0359e. 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/1gRjQIWMYT6iDqHj5Op8Sm.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/1gRjQIWMYT6iDqHj5Op8Sm.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe74ea816c7d94e5559076b712b94ba9cb8cc4d1705ca312962848b488dc24a5f. 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/486eZW8aqcpe9L5vbrZMtA.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/486eZW8aqcpe9L5vbrZMtA.