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 0xcc0d99ad0b697f4569658b88ab967d2b65d4b6ce46ede86c2c0e2c973454a5fa. 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/2e625c5c-f95b-426b-a89a-c587792919c1.json and https://artists.proofprofile.net/proofs/artist/2e625c5c-f95b-426b-a89a-c587792919c1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xeb6da8f7c5726bc058bc287b2396783f718caab4de6ca55c23f11d5cedf9adfa","isrc":"USLZJ1788635","name":"Fuchs du hast die Gans gestohlen","registered_at":"2026-06-09T14:02:20Z","spotify_id":"6HoOTb8rumU3LCgY196MPr","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 0xeb6da8f7c5726bc058bc287b2396783f718caab4de6ca55c23f11d5cedf9adfa. 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/6HoOTb8rumU3LCgY196MPr.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/6HoOTb8rumU3LCgY196MPr.
{"copyright_id":"0xff4c93b9041232f86e6076010c89d84ca5821b218ffe0c546c314b300819df84","isrc":"USLZJ1788648","name":"Kopf Schulter Knie und Fuß","registered_at":"2026-06-06T15:07:02Z","spotify_id":"6ymCWq5biWn9SOHVRjaQzd","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff4c93b9041232f86e6076010c89d84ca5821b218ffe0c546c314b300819df84. 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/6ymCWq5biWn9SOHVRjaQzd.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/6ymCWq5biWn9SOHVRjaQzd.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x131479503f4e84910df900ff128b300b73547c0296ca0d1f5185b32c9a157cc8. 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/0TIZej5SK0915StJSquIWp.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/0TIZej5SK0915StJSquIWp.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1192df5cc05e8e14a489e7e9a9b067535bb44df8e398d3d1c0384798ffe9f117. 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/3PoNuK0WsIf43LpImvp4fT.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/3PoNuK0WsIf43LpImvp4fT.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2d16f69a188b8951af3ffa296b97f03233aade629a437f450fa439ead11cd3c. 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/2HqeJ3vwkT6tNb8d9PPJKE.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/2HqeJ3vwkT6tNb8d9PPJKE.
{"copyright_id":"0xbcfedc28a85c7f94209e3b07b91782f5df3e8eee390e81072c10558d6f37c0b0","isrc":"USLZJ2143411","name":"Fünf kleine Affen","registered_at":"2026-06-09T03:40:34Z","spotify_id":"2VdUHArGbr0DcSepcApIae","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcfedc28a85c7f94209e3b07b91782f5df3e8eee390e81072c10558d6f37c0b0. 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/2VdUHArGbr0DcSepcApIae.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/2VdUHArGbr0DcSepcApIae.
{"copyright_id":"0xc4d2b00e5b4dddfdcacb4999c0e610cdf5d38c88c295866a62d88510a5c8813e","isrc":"QZHN62273417","name":"Das Krokodil","registered_at":"2026-06-10T00:08:17Z","spotify_id":"0Pbl6WFhBVLLYj2HBAg4zb","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d2b00e5b4dddfdcacb4999c0e610cdf5d38c88c295866a62d88510a5c8813e. 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/0Pbl6WFhBVLLYj2HBAg4zb.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/0Pbl6WFhBVLLYj2HBAg4zb.
{"copyright_id":"0x22b0bf38cb8321e4195f36f6deb245fd2f44d6b2b1fe50c58a4d3abca96c8dc0","isrc":"QZHN62273426","name":"Die Ameisen marschieren","registered_at":"2026-06-08T17:12:52Z","spotify_id":"2jRVTnIaZ5zXZX3b2kb8jE","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b0bf38cb8321e4195f36f6deb245fd2f44d6b2b1fe50c58a4d3abca96c8dc0. 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/2jRVTnIaZ5zXZX3b2kb8jE.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/2jRVTnIaZ5zXZX3b2kb8jE.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe70fb602acb9ed285a8611a6eb792b16c866fe013c4315a534f45ef7a5a4bafa. 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/7L810JfMgjR63sK9h91ISW.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/7L810JfMgjR63sK9h91ISW.
{"copyright_id":"0x11040a6f2f81f8f6a90a658d746803df78c004da80c37260171f0bf0efadbf45","isrc":"QZES92120349","name":"Der Kartoffelmann","registered_at":"2026-06-10T13:24:45Z","spotify_id":"7gWAkXdGnXN5xoXxUVxfhY","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11040a6f2f81f8f6a90a658d746803df78c004da80c37260171f0bf0efadbf45. 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/7gWAkXdGnXN5xoXxUVxfhY.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/7gWAkXdGnXN5xoXxUVxfhY.
{"copyright_id":"0xa8c49f8a8ee7df10f016ef79de1727b4e555bcc2b874ccbf7543b2684d4f8953","isrc":"USLZJ2130744","name":"Der blaue Traktor","registered_at":"2026-06-09T14:07:00Z","spotify_id":"2d7p0wfXYThXY22oCkD1G7","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8c49f8a8ee7df10f016ef79de1727b4e555bcc2b874ccbf7543b2684d4f8953. 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/2d7p0wfXYThXY22oCkD1G7.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/2d7p0wfXYThXY22oCkD1G7.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39570231bc29a406ea264292fa413be6639b96fd859a7bc56b07dea120635f3e. 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/5E6rq1uo0aFPpgpoJEu62I.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/5E6rq1uo0aFPpgpoJEu62I.
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