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 0x97154437a522766972323333ae25482ebe85dd01eb131dbc0941f7ad952bc7d1. 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/b828782e-ebe4-484f-ae96-eca38e3c1cd9.json and https://artists.proofprofile.net/proofs/artist/b828782e-ebe4-484f-ae96-eca38e3c1cd9.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 0x9943f9db059adbf8136884e5d88fd87be3909d02480b3aeb21b75cfbf2a41222. 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/04QQKADf45xNvlgJHC9nvO.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/04QQKADf45xNvlgJHC9nvO.
{"copyright_id":"0xdf0fd82802f202f5d7bc938df07f98a5aa8a1578ff25bbd892f0d47c9656b43c","isrc":"GRUM72500015","name":"5 AM IN VANCOUVER","registered_at":"2026-06-01T12:06:54Z","spotify_id":"3VwyRL8A1CkxCLWtWalb60","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf0fd82802f202f5d7bc938df07f98a5aa8a1578ff25bbd892f0d47c9656b43c. 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/3VwyRL8A1CkxCLWtWalb60.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/3VwyRL8A1CkxCLWtWalb60.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb50f25545e1afe2dd5edfa73f8279d88458feaec99e3d291a3b69840c5b5ff. 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/3yv9yWYjee6XCuKblpkM56.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/3yv9yWYjee6XCuKblpkM56.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b74f8b0c5b1263c0993d10537cb31885ce863e58b7bddff7361bd4626deb552. 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/2XmI4W0bTReeEJ9PVcT5ne.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/2XmI4W0bTReeEJ9PVcT5ne.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c13b851eb63129ef0c0129ee72b588bca29f11c34674e896459e8ddf8c0755d. 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/3Rke6L86WTEsyLLbc30b9D.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/3Rke6L86WTEsyLLbc30b9D.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8cc2033d5eb94cc7b090fa95276d16e76799b111f0643b2d40df76efe738c51. 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/4DSkK1XfAaO0qDfcoyqTXc.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/4DSkK1XfAaO0qDfcoyqTXc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eebd3a3cd6ad76f55ac4de04a25f937ed62cf2255adba98fca2b41c1ac0cf8d. 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/7FWLP4FqCITqzIkZHtS0fS.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/7FWLP4FqCITqzIkZHtS0fS.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe434896adc0344c4f3373b183c3b3a97b791861663907edf41c1607b0169896. 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/7hTfTFm77zsHQYugOQICtF.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/7hTfTFm77zsHQYugOQICtF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dbaf9d11824cef48541661bd7674982920f70e577bea9da60c5a08bdf2995d2. 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/2RyMXtihyPhSl3WWdAZvJc.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/2RyMXtihyPhSl3WWdAZvJc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9943f9db059adbf8136884e5d88fd87be3909d02480b3aeb21b75cfbf2a41222. 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/4ZS6jJaVeDIRDzi9JRirde.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/4ZS6jJaVeDIRDzi9JRirde.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9538a345022ae451c3ae87729f897bd316d865f220c3c4ecb597b86e272c1d1d. 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/2V8NtP26Ja0IE3S3rU01z8.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/2V8NtP26Ja0IE3S3rU01z8.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf1440e466cb8c463f5c2d088f5fe992eeb56d14649f211faff94c4c52f50951. 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/10XT0sJ9X6mphdFnkPcutl.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/10XT0sJ9X6mphdFnkPcutl.