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 0x1eca621ab4a48a23c419e0fd8b1b900b0ce2055eee7519502af62b690415613d. 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/53d79cfb-3386-4384-9c19-335cc0e7c545.json and https://artists.proofprofile.net/proofs/artist/53d79cfb-3386-4384-9c19-335cc0e7c545.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 0x6b73277a9f6f489a4582b4d57957e0c8958402a12e72405ffca806a7c4f60c95. 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/0Vl4eICpXMjtiK0RhdaWov.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/0Vl4eICpXMjtiK0RhdaWov.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c4fb31a2ee4f45e5a3940e662f7893e74e2cf7f9c149b6961f492fb1dc6e6a. 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/4Upt2Q8OcUd85uo5x9QqWK.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/4Upt2Q8OcUd85uo5x9QqWK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b73277a9f6f489a4582b4d57957e0c8958402a12e72405ffca806a7c4f60c95. 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/0A141i02gDs2bG0Nnby51X.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/0A141i02gDs2bG0Nnby51X.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6681c4033ff96608512e826b6d5598eb411cf628ad27ae7186b7059156312bbe. 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/6QVxJg8q95hEuPgNRb56jK.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/6QVxJg8q95hEuPgNRb56jK.
Alles brennt (aus "Sing meinen Song, Vol. 9")
Sing meinen Song - Das Tauschkonzert, Vol. 9
{"copyright_id":"0x4485323724e85f002dadf2de0088db0f3bde0a87976990cd3dac45c059b04b6c","isrc":"DETO32200075","name":"Alles brennt (aus \"Sing meinen Song, Vol. 9\")","registered_at":"2026-06-06T02:39:05Z","spotify_id":"6dd71uogNQHdG6II40itFD","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4485323724e85f002dadf2de0088db0f3bde0a87976990cd3dac45c059b04b6c. 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/6dd71uogNQHdG6II40itFD.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/6dd71uogNQHdG6II40itFD.
Don't Let Me Go (aus "Sing meinen Song, Vol. 9")
{"copyright_id":"0xed33c79ca68b376e214e4a1dd8a5d17082efee4eaed75526b1d7c5caf5625d5e","isrc":"DETO32200054","name":"Don't Let Me Go (aus \"Sing meinen Song, Vol. 9\")","registered_at":"2026-06-10T15:58:30Z","spotify_id":"3dPngmG9WPL78MuDnp84BE","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed33c79ca68b376e214e4a1dd8a5d17082efee4eaed75526b1d7c5caf5625d5e. 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/3dPngmG9WPL78MuDnp84BE.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/3dPngmG9WPL78MuDnp84BE.
Auf beiden Beinen (aus "Sing meinen Song, Vol. 9")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1fb68a80536104b738631a58755c7cc8424496eca07caaea84808ab341960b2. 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/2iH0AkG646DMUCS3s0gIz4.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/2iH0AkG646DMUCS3s0gIz4.
Chicago (aus "Sing meinen Song, Vol. 9")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31691142c4e0034c3bbcac953edb2aa296511a83e05d2278455879c2b46f869b. 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/3FZ6qetVqk6ZUWnkqqRLEq.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/3FZ6qetVqk6ZUWnkqqRLEq.
Ne Leiche (aus "Sing meinen Song, Vol. 9")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x350577ddce1764352390f2cdcf09923afa5a99e16d02242a1b8479d647c62530. 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/5IvdWqfynWhy5Z5wCpbVov.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/5IvdWqfynWhy5Z5wCpbVov.
{"copyright_id":"0x5c71651847b254ac69f5c43deeac58aff5b555c1612f6500fa019e3ff2edaf91","isrc":"DETO32200067","name":"Fire (aus \"Sing meinen Song, Vol. 9\")","registered_at":"2026-06-20T21:38:58Z","spotify_id":"58LniGyiNJOcIv7TylL7F7","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c71651847b254ac69f5c43deeac58aff5b555c1612f6500fa019e3ff2edaf91. 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/58LniGyiNJOcIv7TylL7F7.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/58LniGyiNJOcIv7TylL7F7.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b73277a9f6f489a4582b4d57957e0c8958402a12e72405ffca806a7c4f60c95. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6ulJjwlS7MxlgMB8t9rTYr.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/6ulJjwlS7MxlgMB8t9rTYr.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6424db5ccededde39696e656a82275a1d24e796b6901ff9698a57fbbd7b42820. 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/3spnKt4GyMYcOlX2PgW7pL.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/3spnKt4GyMYcOlX2PgW7pL.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a8258cbe8e27aa42b25f18243401e8aa3d187d314e9a165cb0139c01a84f5e. 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/4fjIZ1SrvhJoO0TJKJLNGb.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/4fjIZ1SrvhJoO0TJKJLNGb.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a8258cbe8e27aa42b25f18243401e8aa3d187d314e9a165cb0139c01a84f5e. 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/0gKDd9B6lcivyf2tu4dGbk.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/0gKDd9B6lcivyf2tu4dGbk.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6681c4033ff96608512e826b6d5598eb411cf628ad27ae7186b7059156312bbe. 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/2UD1csihq8aPrpM69C2XrW.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/2UD1csihq8aPrpM69C2XrW.
Liebe - Die schönsten deutschsprachigen Liebeslieder & Balladen