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 0x5c6f41cfc069688299b85e6fa122a3032f48d5175a6d4462c16c4f27fd96a2c8. 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/1f10fabb-9b4e-4462-8fad-b47f86f5a39d.json and https://artists.proofprofile.net/proofs/artist/1f10fabb-9b4e-4462-8fad-b47f86f5a39d.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 0xfa419b7eefaaa859b0e083770eaf72d4a809311f40b745d8bc3617714201a9ae. 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/0uHOVwV9D2MV4d9tGkAv5u.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/0uHOVwV9D2MV4d9tGkAv5u.
{"copyright_id":"0x6f2f3607ca03454f583baa5ec6f10519def12c0e5480a2f495d2ef8faa8a79d6","isrc":"CH4932000004","name":"Ich liebe Dich, Faber","registered_at":"2026-06-05T09:21:38Z","spotify_id":"7ra6gSEAen4ywJpgMEsFfi","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2f3607ca03454f583baa5ec6f10519def12c0e5480a2f495d2ef8faa8a79d6. 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/7ra6gSEAen4ywJpgMEsFfi.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/7ra6gSEAen4ywJpgMEsFfi.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d04a5bf162430266039f4de84458033c9afdd25e5b133cf1e35552de87241b4. 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/42EfIB0ayYOnYBdD6XWnM0.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/42EfIB0ayYOnYBdD6XWnM0.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b1666c5a6fbafd5238d9bd690bec1225a616731ed607d642ab679f44159d49. 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/3PnrnPDVcgOn5j8ZEY6nY8.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/3PnrnPDVcgOn5j8ZEY6nY8.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08956c7d728ba7b3095c1e0c86115b3e9246e779f438e4042cb6fe87f44e2ba8. 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/4mjwuLRPVbyYSPgNZO7cVI.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/4mjwuLRPVbyYSPgNZO7cVI.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c607ba31842bf8282909fc80742cdba601e95729ce1ddb64b3a9cf152a782a2. 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/4PIYPcJ41I4sZ36vAtLPvs.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/4PIYPcJ41I4sZ36vAtLPvs.
{"copyright_id":"0x0dfed17d78200ed2d188d5fe8bebdd153befd40e52e884081ce32a20b773420f","isrc":"CH4932000009","name":"Euse Rosegarte","registered_at":"2026-06-07T14:43:25Z","spotify_id":"2LZoIeuv577bvSL4nXjhOk","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dfed17d78200ed2d188d5fe8bebdd153befd40e52e884081ce32a20b773420f. 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/2LZoIeuv577bvSL4nXjhOk.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/2LZoIeuv577bvSL4nXjhOk.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510e8372b4297c9a33a27816204039fa5f5c9fd003e437a481179c919b378323. 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/4pyMbDczZdYcsWPPzMzElI.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/4pyMbDczZdYcsWPPzMzElI.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf4169545122dc44f7a33bbcaf5a1e972157119a4832e3afb35e4814672f957. 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/66zhNNAzJSQwA621Rj4uVM.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/66zhNNAzJSQwA621Rj4uVM.
{"copyright_id":"0x1f47b34fbc395ede69b1512556be9315bff02d3a0f0788272d49b165aa2b20db","isrc":"CH4932000012","name":"Ich liebe Dich, Dino","registered_at":"2026-06-07T21:16:09Z","spotify_id":"5tUo1dbhEpTWhe3ZBFnVdh","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f47b34fbc395ede69b1512556be9315bff02d3a0f0788272d49b165aa2b20db. 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/5tUo1dbhEpTWhe3ZBFnVdh.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/5tUo1dbhEpTWhe3ZBFnVdh.
{"copyright_id":"0x55a970e1ab6ffb819fca5eaf5d81bd023dca1e8aaeeaed76c7c6a9da8401345c","isrc":"CH4932000013","name":"E Nacht a de Langstrass","registered_at":"2026-06-05T17:36:49Z","spotify_id":"3BYkY2QksiE75xsSYKuKzu","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a970e1ab6ffb819fca5eaf5d81bd023dca1e8aaeeaed76c7c6a9da8401345c. 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/3BYkY2QksiE75xsSYKuKzu.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/3BYkY2QksiE75xsSYKuKzu.
{"copyright_id":"0x3d36bbe4acfdca3aed66fac6bc1a1c875d6c5bd6af5374566a432893fb86d46a","isrc":"CH4932000014","name":"Eis hämmer immer no gno","registered_at":"2026-06-08T04:45:24Z","spotify_id":"6pTnIK8L39z2g1VIsBm9En","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d36bbe4acfdca3aed66fac6bc1a1c875d6c5bd6af5374566a432893fb86d46a. 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/6pTnIK8L39z2g1VIsBm9En.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/6pTnIK8L39z2g1VIsBm9En.
{"copyright_id":"0x89920f6c5da6ba719e3916658ea3cb5e6ca548c5c917c320103efd9abba103ec","isrc":"CH4932000015","name":"Derfi di hebe","registered_at":"2026-06-05T13:28:10Z","spotify_id":"0offCTctIys3XsX6YKkOWC","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89920f6c5da6ba719e3916658ea3cb5e6ca548c5c917c320103efd9abba103ec. 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/0offCTctIys3XsX6YKkOWC.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/0offCTctIys3XsX6YKkOWC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60fb66b08a786a593dc474ae2b9c4316bec7c606a1e1f652cd54f5ce77086cf. 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/6miHVrbEgRF9KctbgPHNqB.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/6miHVrbEgRF9KctbgPHNqB.