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 0xf00d7147afa7a8a157345f53822f01003053edbd8e5b8a5ed741ae5263e6d69e. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/442b95a1-517b-4a22-b2b5-b8f2e8a0a3ad.json and https://artists.proofprofile.net/proofs/artist/442b95a1-517b-4a22-b2b5-b8f2e8a0a3ad.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Girl from Ipanema (Did You See Her?)
Isorhythm 4 - Live in Murten 2009 - Bonustrack
Isorhythm 2.2 - Live in Murten 2009 - Bonustrack
In & out of Order (Isorhythm 15) - Live in Murten 2009 - Bonustrack
Cut a Clearing in the Wilderness-Isorhythm #37
Feuilles Au Vent D'Automne / Isorhythm # 38
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 0xb6236e39123cfd2ceb6f3bae221fe34d34380c7fe25be9885e39cf29b8c56d44. 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/20BbU2OWc52pQs8ot3NtXR.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/20BbU2OWc52pQs8ot3NtXR.
{"copyright_id":"0xbaa488f7cb38448ca93f32297309d183ba776e1e80700f1b7298c405d3acbf3d","isrc":"FR96X2094545","name":"Unto the Burning Circle","registered_at":"2026-06-07T12:57:32Z","spotify_id":"6KU1Jwa2vjyiR8hLAGxMBh","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaa488f7cb38448ca93f32297309d183ba776e1e80700f1b7298c405d3acbf3d. 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/6KU1Jwa2vjyiR8hLAGxMBh.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/6KU1Jwa2vjyiR8hLAGxMBh.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x241702ac7b997b865a095223279db52dae09ca0a01c3aed1e5c33c368c499c54. 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/3eg30a8vQJsWGOtSoLOSIH.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/3eg30a8vQJsWGOtSoLOSIH.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cacc2ab7e95227e166d03160b107883536e41d4d74e3b5ed60ba8b98466e187. 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/6Rp0btzWVubMIMkWOyzxgO.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/6Rp0btzWVubMIMkWOyzxgO.
{"copyright_id":"0xc220a10e16eb94aa2e7fb3247d22a26b2135ab4c1ae88c7003d7e26fd6bdd6f5","isrc":"FR96X2094549","name":"Pearls and Tears","registered_at":"2026-06-08T02:30:18Z","spotify_id":"0f0lRTBcGJtunXTpCNmYPD","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc220a10e16eb94aa2e7fb3247d22a26b2135ab4c1ae88c7003d7e26fd6bdd6f5. 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/0f0lRTBcGJtunXTpCNmYPD.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/0f0lRTBcGJtunXTpCNmYPD.
{"copyright_id":"0x99fac3c2a4164f88b13f330e22b0f50ef17bf03855d1ed4bf24c4006b3741e54","isrc":"FR96X2094550","name":"Garden of My Childhood","registered_at":"2026-06-08T11:26:47Z","spotify_id":"3aLIc2iqvGIMceUmrvENP9","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99fac3c2a4164f88b13f330e22b0f50ef17bf03855d1ed4bf24c4006b3741e54. 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/3aLIc2iqvGIMceUmrvENP9.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/3aLIc2iqvGIMceUmrvENP9.
{"copyright_id":"0x37eaae44711c5eeb059c5aeee11bf023ea15664ef59854c2f49cc768c1eb7ec2","isrc":"FR96X2094551","name":"Still Life","registered_at":"2026-06-10T02:55:08Z","spotify_id":"23XWDeqLyUPNN4VFsYuTuB","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37eaae44711c5eeb059c5aeee11bf023ea15664ef59854c2f49cc768c1eb7ec2. 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/23XWDeqLyUPNN4VFsYuTuB.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/23XWDeqLyUPNN4VFsYuTuB.
{"copyright_id":"0x943adeb16abea9a56a8240fb55523ff5484ad36d269ccef42515b54cae236bb5","isrc":"FR96X2094552","name":"And the Long Shadows","registered_at":"2026-06-08T11:24:02Z","spotify_id":"7q17gi4ysuvYfyUQoBTbcS","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943adeb16abea9a56a8240fb55523ff5484ad36d269ccef42515b54cae236bb5. 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/7q17gi4ysuvYfyUQoBTbcS.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/7q17gi4ysuvYfyUQoBTbcS.