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 0x2f36d54908ffae3f12b6beb6f5eb4fac532795b00888a2e815adc673a2740a2d. 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/72552db5-9e34-456e-9233-3bba4457ac4c.json and https://artists.proofprofile.net/proofs/artist/72552db5-9e34-456e-9233-3bba4457ac4c.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 0xfeaf6be0d9afaa5ef893f2a0d29818678109a42774d7750ae6075570c0248137. 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/7Kyum89tHgItLlchnr21MG.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/7Kyum89tHgItLlchnr21MG.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af475191649842f3a4cb286bc042a96df7468ffd676e7b6de7372caec69afd0. 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/4MlU81TyuXe7V5xz99HgDE.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/4MlU81TyuXe7V5xz99HgDE.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef20801aa11358b6c7199950aa2e4000c73f185cf947418692bd32246ae39b6b. 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/1DMK84ykuFTo4B3dboOU3o.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/1DMK84ykuFTo4B3dboOU3o.
{"copyright_id":"0x7c6ca861501d0d44170838c56494e47cbd53ff60c51c329cc40e7920d3d45db7","isrc":"NLAM41700005","name":"Bobbeling Queen - Team Rush Hour Remix","registered_at":"2026-06-11T15:25:33Z","spotify_id":"3mxywKTf5KJH8w2WwxP767","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c6ca861501d0d44170838c56494e47cbd53ff60c51c329cc40e7920d3d45db7. 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/3mxywKTf5KJH8w2WwxP767.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/3mxywKTf5KJH8w2WwxP767.
{"copyright_id":"0x477f6a9eabd5c8c9a9257b9613d698fee69e66d20a6a7589f89fb2c987c99a5a","isrc":"NLAM41800044","name":"Hier Bij Jou","registered_at":"2026-06-21T08:48:44Z","spotify_id":"6HvjdUOKDyDiHAgauFaX2h","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477f6a9eabd5c8c9a9257b9613d698fee69e66d20a6a7589f89fb2c987c99a5a. 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/6HvjdUOKDyDiHAgauFaX2h.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/6HvjdUOKDyDiHAgauFaX2h.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a54a973995d888632d13da841d6b72269d60153587a4c7d0ea77c9258e4277. 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/5rgqPumJbC0zbrqFZuRlua.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/5rgqPumJbC0zbrqFZuRlua.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d1316657c5cc4e7b0778dfa4a223317b74f736e7e486c749fe138b9c2538b7. 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/57maYLGsH9wPbF2q5xGi7u.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/57maYLGsH9wPbF2q5xGi7u.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1697daa0ed078e88132969b0b81a8c87a82342aeeb58a0c40b110398cebb309. 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/4oV9dKHJ10GidZsL64un6D.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/4oV9dKHJ10GidZsL64un6D.
{"copyright_id":"0xefb7a7fae93a5b4d73196f2a66ae6ee19dfd0257b6dd654dc351124608dbd26a","isrc":"NLG271604095","name":"Goeie Vibes - Team Rush Hour Remix","registered_at":"2026-06-10T06:41:56Z","spotify_id":"5eaBrmkssAqR8vsrvuQiYF","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb7a7fae93a5b4d73196f2a66ae6ee19dfd0257b6dd654dc351124608dbd26a. 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/5eaBrmkssAqR8vsrvuQiYF.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/5eaBrmkssAqR8vsrvuQiYF.
G-Rex Presents Dadadam Label Friends ADE 2015
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a2de75c799777ca038287379d81e0e893b0a38edc6eeed2061632630690b8d9. 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/783zusul4kG5C4DNIdPhna.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/783zusul4kG5C4DNIdPhna.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d831e5130a55279c1d66ca5a9d19ba9a8355afe359e02060aa0814d8197930. 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/5W6ag01dEOGnDzAJ7ZtbOG.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/5W6ag01dEOGnDzAJ7ZtbOG.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1057df9d6ce15ab425ad03531a9ae2fe7142bb0bed97570d7e0797a47058856. 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/3QCd4DM14jozZ6PxrjW5lt.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/3QCd4DM14jozZ6PxrjW5lt.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e60c277bebf044c5683d0f87bb2df669ee084805d48eeb7d6a525ee40309f1. 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/6Z61fpmObbaFkcF2CwoBzK.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/6Z61fpmObbaFkcF2CwoBzK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75c7be05d4f0ccd6fb27b7673ba84035347e6e4ef1d72efd313419a0a6833a37. 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/42mt1niQDZTsMrDuVArzgK.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/42mt1niQDZTsMrDuVArzgK.
{"copyright_id":"0x797edfcbe8bf74c782c8e611615d312906a6b1218b77c7d018e6efddcaaf50ae","isrc":"NLAM41600060","name":"Zo Gaat Het Niet Werken","registered_at":"2026-06-09T20:13:22Z","spotify_id":"3suE4uqsJJOGTln7aXF5ZE","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x797edfcbe8bf74c782c8e611615d312906a6b1218b77c7d018e6efddcaaf50ae. 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/3suE4uqsJJOGTln7aXF5ZE.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/3suE4uqsJJOGTln7aXF5ZE.