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 0x6cbd4861b010182e200a8ef41314e183a44f960211226709415bc90ec67e0b94. 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/606cb7dc-fb9c-490d-a6b6-609ccf2d9a10.json and https://artists.proofprofile.net/proofs/artist/606cb7dc-fb9c-490d-a6b6-609ccf2d9a10.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 0x120c9e5dc676a917ee87a3085657281ebb2f01f47372b33cce899a04503bba5e. 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/1LPMktEFTcExqYm2x4D0Rf.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/1LPMktEFTcExqYm2x4D0Rf.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe75dbc00443809471eb9b6129cc6828b156e4b17ab98c549fcd1b2546eb7d383. 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/5P1Wa9JlinO6DLkJTXX09b.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/5P1Wa9JlinO6DLkJTXX09b.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0930010ea9d4ea6843a707b1ba9bea303ba92a1736e60977d2f14d8fed9fd7. 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/71usfyu4lteyYq1tGP9m16.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/71usfyu4lteyYq1tGP9m16.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff71bf4e9711de36426ca9dcd0ccf88ea0d209c00bfa899a932f443ce11f4f9. 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/5D69iztSfLRgVYQpmadHxR.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/5D69iztSfLRgVYQpmadHxR.
{"copyright_id":"0x4c4736308880cfabca6e5bd689d21aa4f75cffbda588eab634d79aa790b5c342","isrc":"GBKQU2408859","name":"Where Are U","registered_at":"2026-06-10T20:53:04Z","spotify_id":"3hPtQvNpNIu9CkqNamKiQD","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4736308880cfabca6e5bd689d21aa4f75cffbda588eab634d79aa790b5c342. 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/3hPtQvNpNIu9CkqNamKiQD.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/3hPtQvNpNIu9CkqNamKiQD.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09fe3010bec51ed9861149e536ace11a144be47466ad279f56fce4b9ad7fa7f7. 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/0sHd5TJTUDFrhxfV6kOC1U.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/0sHd5TJTUDFrhxfV6kOC1U.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0753b40503240c15a7e680ce787414cbb509fb4848217f7c96f1f3562f7b5a. 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/5iRfV72DCt0ec5NdxVjI4a.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/5iRfV72DCt0ec5NdxVjI4a.
{"copyright_id":"0x5769ed905904364e3623a3bf8cacc476cfe3b53f8ebb2e94a92deeb10064ef1b","isrc":"GBLLT2429614","name":"Take Me Where You Are","registered_at":"2026-06-08T05:31:44Z","spotify_id":"0HozlxPPVmMQmniXRV7HkF","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5769ed905904364e3623a3bf8cacc476cfe3b53f8ebb2e94a92deeb10064ef1b. 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/0HozlxPPVmMQmniXRV7HkF.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/0HozlxPPVmMQmniXRV7HkF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c566604f4016a136595b25a2c42c30e64220b44176989452d5a52e847245e9. 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/1kHpkJio6MHq6WoJnFkhpr.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/1kHpkJio6MHq6WoJnFkhpr.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84391eadb02a82753f231103ac502f62e5c11190ce4d9ad2e6822ccb144d5135. 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/2PJjKect87yaaZ4faFgHmx.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/2PJjKect87yaaZ4faFgHmx.
{"copyright_id":"0xfc9a81c6911300b190da7aa7859a9bcc9f94930bcba1b94c3bca9914aef4d400","isrc":"GBLV62402426","name":"Double Vision","registered_at":"2026-06-06T05:38:02Z","spotify_id":"2A5ukjdXP1yJOYDWdUxbXx","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc9a81c6911300b190da7aa7859a9bcc9f94930bcba1b94c3bca9914aef4d400. 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/2A5ukjdXP1yJOYDWdUxbXx.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/2A5ukjdXP1yJOYDWdUxbXx.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1d05e712446c474fb099f93141d391ad08185fcf35f0462a39737c10d02efce. 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/6NFWp3ScUkwyKyhPCM0QbF.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/6NFWp3ScUkwyKyhPCM0QbF.
{"copyright_id":"0x10cd3e9350a069bf022f1819c69c585d38fc5d80283bbf64fffe8d9d486b6fca","isrc":"GBLLT2501108","name":"Lean Me Back","registered_at":"2026-06-04T11:12:13Z","spotify_id":"34BbOnMijmWzFFO78i3BBB","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10cd3e9350a069bf022f1819c69c585d38fc5d80283bbf64fffe8d9d486b6fca. 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/34BbOnMijmWzFFO78i3BBB.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/34BbOnMijmWzFFO78i3BBB.
{"copyright_id":"0x45c58a307a2527e6dd67234cddab5671b462dd9e01486db84a069eaa8d9feaaa","isrc":"DEPI82457242","name":"Somebody Else","registered_at":"2026-06-21T09:12:27Z","spotify_id":"7oDwIPkHPvLGRqaqWBnN9Q","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c58a307a2527e6dd67234cddab5671b462dd9e01486db84a069eaa8d9feaaa. 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/7oDwIPkHPvLGRqaqWBnN9Q.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/7oDwIPkHPvLGRqaqWBnN9Q.
{"copyright_id":"0x494bb748d51c688788bb4fb0372af7ee7d2b44a0904cb8ce4a03cb788e75d747","isrc":"QZWDE2428832","name":"Back In My World","registered_at":"2026-06-10T20:57:42Z","spotify_id":"33f6RHM8myjvMKJbrqdPXr","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x494bb748d51c688788bb4fb0372af7ee7d2b44a0904cb8ce4a03cb788e75d747. 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/33f6RHM8myjvMKJbrqdPXr.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/33f6RHM8myjvMKJbrqdPXr.