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 0x6e2fc8d0f067307b1bc76e5dd8b6b3985b39c10e76f62ffe9cb46cad38ea05ee. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/afbff2af-83c8-45ce-a51b-af5cc7aa05ae.json and https://artists.proofprofile.net/proofs/artist/afbff2af-83c8-45ce-a51b-af5cc7aa05ae.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 0x5405c0e6c423e068b4a914b6aa6f2ac82c781580561177de1bf8b815fa86d7a4. 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/0IEpFiWXbmfpiiUHPlPkYC.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/0IEpFiWXbmfpiiUHPlPkYC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0760638745b83c8ee21f8238475952295eef8e9d3c4a91388801a313b7b6347. 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/6ulEymrJ2Azx1uo3YHSE5w.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/6ulEymrJ2Azx1uo3YHSE5w.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9de52fdbc870cffb6ed5176b24de07940148f7b477db0a17790125324160e21. 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/273T9K9df4B9KpipYZY4o4.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/273T9K9df4B9KpipYZY4o4.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7242dd6cbe45757c85b3a3775b531cd8282ae5d5306eb8f59e8a50e73067021d. 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/5WYOFPJKUJ8p0pzT7t4ixn.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/5WYOFPJKUJ8p0pzT7t4ixn.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7242dd6cbe45757c85b3a3775b531cd8282ae5d5306eb8f59e8a50e73067021d. 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/3rFNqqOjPeAcTn1P2i0FiV.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/3rFNqqOjPeAcTn1P2i0FiV.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec4e13b87f181a70c0d3a06b42193f293a522bd36129dd8a3cf0299225f026f0. 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/2XZqsIRtWvPjWxGg8ag6mp.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/2XZqsIRtWvPjWxGg8ag6mp.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x146d611b0800af89fe9d4aa084e5b9015991b1502a7348630a4c1111db1458d3. 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/5iLXpHe9EuxOGO4If0sx8u.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/5iLXpHe9EuxOGO4If0sx8u.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a04715250f5b197ea01209f0244bb672236967899212df4cf041a43d3e263db. 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/6vjZ0n6l43VBU7GnRWt7xP.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/6vjZ0n6l43VBU7GnRWt7xP.
SALLY (feat. Kyle Richh, TaTa & Jenn Carter)
{"copyright_id":"0x3409c0b796da5bd950893a55ccec10dcc2a54c57229f17fb03bf8ffa618c1ae3","isrc":"USUYG1436559","name":"SALLY (feat. Kyle Richh, TaTa & Jenn Carter)","registered_at":"2026-06-08T01:03:39Z","spotify_id":"187GVdvJvMKtU46NhaoBVW","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3409c0b796da5bd950893a55ccec10dcc2a54c57229f17fb03bf8ffa618c1ae3. 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/187GVdvJvMKtU46NhaoBVW.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/187GVdvJvMKtU46NhaoBVW.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc1ad3d1ca98f0695984c6f82a50d5d1746dee5ae6d45170090be71ab3ca2be8. 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/2kiSMw0e4ijDH1Yr6E82fZ.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/2kiSMw0e4ijDH1Yr6E82fZ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe296475820947ec33e6ab92616046f537c28ffb4f0be3492893854bfcf31e4ea. 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/5P2vbM3jbOw4oPABJGkSCe.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/5P2vbM3jbOw4oPABJGkSCe.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3cc23c14c872e71dceda94dff92986b2919afcf138883eb6675735222961f3d. 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/6kRwL4C1U9JiSGabMNr6h8.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/6kRwL4C1U9JiSGabMNr6h8.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8b64b47b11aa249de4f0a9993ce345ee1337bde6295d433175d69711b29fa9. 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/2Vn0Fj7ZMcMri84QwlQUSS.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/2Vn0Fj7ZMcMri84QwlQUSS.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3e0e3140037a7f6c0037edea0dab997f7b8d136e0617a885436118422beb6c. 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/7eOTedO7u2rD6yYTRhTyiB.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/7eOTedO7u2rD6yYTRhTyiB.
{"copyright_id":"0x24c0ac6cc7ca8f6aac7d4bf9fc7a972fafcdd939db4d213514afdc5f9e771273","isrc":"USA2P2451257","name":"Beckham (41 Mix)","registered_at":"2026-06-05T07:25:19Z","spotify_id":"0AMujCMT4wOt8nKDSQwIK3","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c0ac6cc7ca8f6aac7d4bf9fc7a972fafcdd939db4d213514afdc5f9e771273. 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/0AMujCMT4wOt8nKDSQwIK3.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/0AMujCMT4wOt8nKDSQwIK3.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81dec2ea46ee7cd2dd02b0fa9a7e4a2f4a31fb0a2bad2f0ff94ef0b0c24cf6b5. 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/24b5TbtIBm5xRixapLABo7.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/24b5TbtIBm5xRixapLABo7.