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 0x49b57d6e99ea23d9907dec5e78f05f0edcfac6a7af0875518408bf1d155e5e90. 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/1dbc0fc8-5588-4d2d-8b8e-bc72075ebf5e.json and https://artists.proofprofile.net/proofs/artist/1dbc0fc8-5588-4d2d-8b8e-bc72075ebf5e.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 0x84254199af7141a12fc292e53b8053c1dc18e2ea5013855a7ef6a40499d21f10. 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/16TMkVnEcHDLkpLVpThQGj.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/16TMkVnEcHDLkpLVpThQGj.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc357d5e37a56efaaf5cdae177180237c1593150d508ff07c6cda9b6e76651aba. 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/4dpeOOJAOVIEBsZUNIxV2b.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/4dpeOOJAOVIEBsZUNIxV2b.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca9682a705ca9ebaf7f64d9dd8bbf328ac445392e5a54168d270d13f1693b60. 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/26k8OPGYPdOgYcLry6gLOS.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/26k8OPGYPdOgYcLry6gLOS.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431d4d0e73240e348d7c3adcba154f834794a89320552218a47e8b3c079633d6. 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/0PKiZpmErCe7tZsXrr3frP.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/0PKiZpmErCe7tZsXrr3frP.
{"copyright_id":"0xa9a77e8a5f15aa62670e58e8d5dc7154d436594e95aae795edd0c13dddd82f51","isrc":"AUBEC2236755","name":"Older Brother","registered_at":"2026-06-07T03:15:30Z","spotify_id":"0nMT0deSbGknqxqF5y5w9c","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a77e8a5f15aa62670e58e8d5dc7154d436594e95aae795edd0c13dddd82f51. 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/0nMT0deSbGknqxqF5y5w9c.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/0nMT0deSbGknqxqF5y5w9c.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92859685b8618a2f48c4d558ba7b1115b3f42c3837a2793f13b5a97f8cf724a6. 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/1P7WETECK5ig0x1BcJiopi.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/1P7WETECK5ig0x1BcJiopi.
{"copyright_id":"0x11c9604468cbbd263395ee3c245f5963d8fdce2c24e69d2ef155127ecfedf2b5","isrc":"AUBEC2201320","name":"See Thru","registered_at":"2026-06-09T18:08:30Z","spotify_id":"2fddlpqg3nrTRHwEuyBEZz","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c9604468cbbd263395ee3c245f5963d8fdce2c24e69d2ef155127ecfedf2b5. 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/2fddlpqg3nrTRHwEuyBEZz.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/2fddlpqg3nrTRHwEuyBEZz.
{"copyright_id":"0xc04b8c89706526a2f9b71f334e4ded84d59595d737dfcad2732e7728db10f7fb","isrc":"NO2DY2200270","name":"Catch Flous (feat. 3One)","registered_at":"2026-06-18T11:42:18Z","spotify_id":"2vIyrhq8uGjIndif2SzlJj","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc04b8c89706526a2f9b71f334e4ded84d59595d737dfcad2732e7728db10f7fb. 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/2vIyrhq8uGjIndif2SzlJj.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/2vIyrhq8uGjIndif2SzlJj.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda72e85b3fce72c137931dd1f1345bd83a67c18a301b0b58050c79a85fc800be. 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/1tzP8xT7pkDmEc7teUe6oI.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/1tzP8xT7pkDmEc7teUe6oI.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x349d28fd7395a0a99adc0f8a7c4244d08cf4e0547692af6a0a704fe74e261d44. 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/0Ieliubpl8snIfr5xJN0ik.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/0Ieliubpl8snIfr5xJN0ik.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0190f54be098fc53a14551ad15f0ab0fa5a11875d7e37c5199e1125908c4c458. 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/1li9QUn40NeDVOt1qgooPu.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/1li9QUn40NeDVOt1qgooPu.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa31d59685669b652d92eaa896591e3ac3adb382911c284b65bc9dd9795ef00. 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/5nhmDLHgcP5k3VxRNCJC18.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/5nhmDLHgcP5k3VxRNCJC18.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f036460ef111b60ce952af5e0979e3d34d58f6b1dad3d3fb37cd67fe42a12d. 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/1OSCCClqlGlOmil8f3yMtu.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/1OSCCClqlGlOmil8f3yMtu.
{"copyright_id":"0x1196a0c70d23a7cd9890f68da3e9faeea318b1fca9aa44c215bd536117655ab2","isrc":"AUBEC2468467","name":"Don't Do Too Much","registered_at":"2026-06-11T03:30:29Z","spotify_id":"7gjg08bBsjWOr8wUQNy37v","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1196a0c70d23a7cd9890f68da3e9faeea318b1fca9aa44c215bd536117655ab2. 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/7gjg08bBsjWOr8wUQNy37v.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/7gjg08bBsjWOr8wUQNy37v.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8f7f6b5180698c76ed8325f436ecd129ed204925eacd50758f40172b7ff145c. 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/3VFRiXyNd8ratzVGuOKCFj.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/3VFRiXyNd8ratzVGuOKCFj.