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 0x981c95bd048cd5368b5d9d2e38d5160c9dbfb3a667c97c99c78582d80b7dde8e. 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/fb0d9ea8-cb7c-482e-b95a-5fe90e66d3c3.json and https://artists.proofprofile.net/proofs/artist/fb0d9ea8-cb7c-482e-b95a-5fe90e66d3c3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x6c74c716eca9eb1291df18e718d32ca648ec41403158a9d78c1b6ebcad09adc8","isrc":"DEDU22300025","name":"Chastity (Somewhen Remix)","registered_at":"2026-06-05T11:13:48Z","spotify_id":"3y0tDFDuqdiLeEvldDsgmp","type":"track"}
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 0x6c74c716eca9eb1291df18e718d32ca648ec41403158a9d78c1b6ebcad09adc8. 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/3y0tDFDuqdiLeEvldDsgmp.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/3y0tDFDuqdiLeEvldDsgmp.
{"copyright_id":"0x9865040067b90e7de6ef32abfa8874aab4b6829e43610ac7ed1690e4795676d1","isrc":"DEDU22300012","name":"Chastity (Boys Noize Club Mix)","registered_at":"2026-06-20T00:12:46Z","spotify_id":"2pScCMCDpMiZGIAjA7tI87","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9865040067b90e7de6ef32abfa8874aab4b6829e43610ac7ed1690e4795676d1. 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/2pScCMCDpMiZGIAjA7tI87.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/2pScCMCDpMiZGIAjA7tI87.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2887355621c63bf73b8bf8879811bfead56eae3eb25ec0cc6e217d1d53e1d3. 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/0V6Mnx3yRZYa6UTpuTas5u.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/0V6Mnx3yRZYa6UTpuTas5u.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f830a25fb30c347a6d4bcac0b255728c4f072e5e9b3199f059a09117a019613. 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/57oEu27g2NIPvHeYBAWgpm.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/57oEu27g2NIPvHeYBAWgpm.
Ho99o9 presents Territory : Turf Talk, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa38b934a67b9f8b38200ec172a1e0ed59dd671b7e2479c84d72ed84e42606573. 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/7eJVIq59QBc61K3OYdEIYM.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/7eJVIq59QBc61K3OYdEIYM.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb878255ad73caf56daf93d735a966f22c64e126c5916224620210029a6badbf5. 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/4wwcHxuORt22e6j7BOablC.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/4wwcHxuORt22e6j7BOablC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f830a25fb30c347a6d4bcac0b255728c4f072e5e9b3199f059a09117a019613. 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/6pbVWSXwqoUKbrQ50ypNyh.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/6pbVWSXwqoUKbrQ50ypNyh.
{"copyright_id":"0xf5b444f8c2a474f99ac84018eeb4e46fb2ca50b8b69f986cc14c9aad327f890e","isrc":"UKQNV2100082","name":"My Agenda - Anamanaguchi Remix","registered_at":"2026-06-20T03:23:47Z","spotify_id":"1qIi47n0nsdGRfrTe0y57y","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b444f8c2a474f99ac84018eeb4e46fb2ca50b8b69f986cc14c9aad327f890e. 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/1qIi47n0nsdGRfrTe0y57y.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/1qIi47n0nsdGRfrTe0y57y.
My Agenda (feat. Village People & Pussy Riot) [Anamanaguchi Remix]
{"copyright_id":"0xf5b444f8c2a474f99ac84018eeb4e46fb2ca50b8b69f986cc14c9aad327f890e","isrc":"UKQNV2100082","name":"My Agenda (feat. Village People & Pussy Riot) [Anamanaguchi Remix]","registered_at":"2026-06-20T03:23:47Z","spotify_id":"3qqbi0q5yY3eFYc4HjhZHk","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b444f8c2a474f99ac84018eeb4e46fb2ca50b8b69f986cc14c9aad327f890e. 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/3qqbi0q5yY3eFYc4HjhZHk.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/3qqbi0q5yY3eFYc4HjhZHk.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd66edd3da1625ebc73e4b6ed51b5e235202bc09b56e611421afbcb09183e8441. 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/7GYs93LBamRL5UWyA86NJR.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/7GYs93LBamRL5UWyA86NJR.
{"copyright_id":"0x0bb6483261867b408a7aa04137e814c3032c7608b390d8ef27d9a90c0b9e1c5e","isrc":"USAT22101904","name":"Purge The Poison (feat. Pussy Riot)","registered_at":"2026-06-05T12:13:15Z","spotify_id":"51G4UdHXjcNrdLueS1ohzU","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb6483261867b408a7aa04137e814c3032c7608b390d8ef27d9a90c0b9e1c5e. 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/51G4UdHXjcNrdLueS1ohzU.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/51G4UdHXjcNrdLueS1ohzU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a4fd6487644b3f49a9640a93e746cbf35923f2829039c7885d5dfe1214ac739. 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/2G6AOP03YY7hCCxvskZLb4.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/2G6AOP03YY7hCCxvskZLb4.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2372d75c3b53b2aa28af7b6a2c5e8771e279eb0a6235afe92247fbd16c43731. 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/6owoifqMA61WEpm6i2IivB.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/6owoifqMA61WEpm6i2IivB.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25d9066fc4aa12a24ea8827ae4e1b93ed0854b4ce093b65eca41f49accab16ac. 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/6gK3DKtxeHzDArzMuFRNnm.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/6gK3DKtxeHzDArzMuFRNnm.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd5571d0e84fdc761122f978ceedbc68f45c06d0f78d77b30572ba312876f577. 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/1DbGmUbkssrPjKsdQifY4e.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/1DbGmUbkssrPjKsdQifY4e.
Weather Strike (The Bloody Beetroots Remix)
{"copyright_id":"0xde75be35aa9ef6c0b87068086e1c67148f90d6ff984343c38c2ab3675325e276","isrc":"TCAFO2135476","name":"Weather Strike (The Bloody Beetroots Remix)","registered_at":"2026-06-19T01:19:48Z","spotify_id":"3tvmHxQa7Utt1wm9CKtpiq","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde75be35aa9ef6c0b87068086e1c67148f90d6ff984343c38c2ab3675325e276. 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/3tvmHxQa7Utt1wm9CKtpiq.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/3tvmHxQa7Utt1wm9CKtpiq.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd5571d0e84fdc761122f978ceedbc68f45c06d0f78d77b30572ba312876f577. 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/3sParXYPLALwjvEvdUFy5v.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/3sParXYPLALwjvEvdUFy5v.