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 0x0f7e3c5ced58414993374e8eb415671bd4ec947b9741d13043c1c19febf7b195. 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/5ab77c03-9d7b-4390-a5ea-e7a714dac608.json and https://artists.proofprofile.net/proofs/artist/5ab77c03-9d7b-4390-a5ea-e7a714dac608.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xa45d5f26ebebaaa7383bf4efded0ff99889af36c70ac9e078f3edde99f71c483","isrc":"GX8LD2235375","name":"Down Bad","registered_at":"2026-06-10T06:15:32Z","spotify_id":"6moiTm2QVnnl60eVr5tG9g","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 0xa45d5f26ebebaaa7383bf4efded0ff99889af36c70ac9e078f3edde99f71c483. 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/6moiTm2QVnnl60eVr5tG9g.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/6moiTm2QVnnl60eVr5tG9g.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046f01e3818da749e952e0800d36ca25604f9fb9e0595e103c52940322b58db3. 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/4L8HHBaEdKbDTft2IkSA3l.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/4L8HHBaEdKbDTft2IkSA3l.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe038878a11ec546bf9ffd4109ad8358c08f0829ef0a0314987017baf180dabb9. 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/12UbCCUOn85Snu6e3a46vK.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/12UbCCUOn85Snu6e3a46vK.
{"copyright_id":"0x0b7f07ff9e990ec79aa588f730759f2aac4e36732586faff927eb6ecbcb22a29","isrc":"GX5MY2369941","name":"Praise The Lord (Da Shine)","registered_at":"2026-06-07T02:34:19Z","spotify_id":"0eKLC0NuRQ019K1b1pWYrv","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7f07ff9e990ec79aa588f730759f2aac4e36732586faff927eb6ecbcb22a29. 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/0eKLC0NuRQ019K1b1pWYrv.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/0eKLC0NuRQ019K1b1pWYrv.
{"copyright_id":"0xc3a613f9dac95d829f14f20ade8111a41f8eb79060b9b088979beb2b81fcbce1","isrc":"GBKQU2420135","name":"VOO NOTURNO","registered_at":"2026-06-11T15:21:50Z","spotify_id":"4Tvd4vrVVs28FkzqoSXNcx","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a613f9dac95d829f14f20ade8111a41f8eb79060b9b088979beb2b81fcbce1. 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/4Tvd4vrVVs28FkzqoSXNcx.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/4Tvd4vrVVs28FkzqoSXNcx.
{"copyright_id":"0xdc5229bbab761bc2f6d2c9431c9e11a90beb86ebcae8031d01aec900da6d7d76","isrc":"TRCCT2400006","name":"Would I Lie to You","registered_at":"2026-06-11T15:19:26Z","spotify_id":"7Le4Bc5OLSEDkAS6zLUHWY","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc5229bbab761bc2f6d2c9431c9e11a90beb86ebcae8031d01aec900da6d7d76. 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/7Le4Bc5OLSEDkAS6zLUHWY.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/7Le4Bc5OLSEDkAS6zLUHWY.
{"copyright_id":"0xfeb6a0205f70f268b9d3455fff6fb630fe34264c23b0bac23b60fc5b9076eee1","isrc":"QZWV32455413","name":"Strangers - Cover","registered_at":"2026-06-04T10:55:16Z","spotify_id":"7pXERiucnCI6KfVLI7fxrM","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb6a0205f70f268b9d3455fff6fb630fe34264c23b0bac23b60fc5b9076eee1. 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/7pXERiucnCI6KfVLI7fxrM.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/7pXERiucnCI6KfVLI7fxrM.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32168e22570698e1971d1279a9a52e66eba49ad53b335a6d0df612f0e969409c. 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/4IE0Cpyz8z2VaI3NpVxzV3.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/4IE0Cpyz8z2VaI3NpVxzV3.