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 0x8eb90372286796160dfa01251580b976aa3d5dca3819e60d19a3f5ec59e2ed8c. 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/279482f3-d204-46fe-b7e7-26b5baeb1cc6.json and https://artists.proofprofile.net/proofs/artist/279482f3-d204-46fe-b7e7-26b5baeb1cc6.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 0x0a869409f150d8722ffa2134dbe2588a2d44379b2755e26267998f6725043d3e. 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/5n075l6hBwwvBrplE06A1u.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/5n075l6hBwwvBrplE06A1u.
{"copyright_id":"0xc6fc91c0eff92133c026ffa6e852c3d7c80f57178421b0b11a303e991dbdb475","isrc":"QM4TX2261906","name":"Børnebanden - Gennem ild og vand","registered_at":"2026-06-06T11:08:04Z","spotify_id":"4JC14Vkx8PCqoqLAUYPIL9","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6fc91c0eff92133c026ffa6e852c3d7c80f57178421b0b11a303e991dbdb475. 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/4JC14Vkx8PCqoqLAUYPIL9.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/4JC14Vkx8PCqoqLAUYPIL9.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x377c292ed1ba921555f369fe75d500e14e123b9a4d37972890fcbb80f3f81660. 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/5LjSynPb41VEo0p9PMAdjt.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/5LjSynPb41VEo0p9PMAdjt.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb43d0f02cd712aeb2494b6baf268cace08559785f7b5654aeb21c1714f4d587. 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/6C5Fm4DZt1Cf43Du6ofY9K.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/6C5Fm4DZt1Cf43Du6ofY9K.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1538a075d626445c147c80bff150302ee0821fa0fb2dea2c12d6d46526bb174f. 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/3E1AwCeNzTi5SveBq5nY1N.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/3E1AwCeNzTi5SveBq5nY1N.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95f342ab679a42e56a0c57e305b47e2eec80b916a8f0a988ede3e6d87959d308. 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/3AzfdyxAx3nlZ3sgeWN9A3.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/3AzfdyxAx3nlZ3sgeWN9A3.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79a5e307749f1bca13f6a7805bbc2b4375aa24bc19e1e73feeb11cb262e30e1c. 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/3CVhKJoNkpou47Oq65Il38.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/3CVhKJoNkpou47Oq65Il38.
{"copyright_id":"0x4342619d9bd7f9af60a1bae8adf0c53ac3b07c3547c33ec5ae4817abece27769","isrc":"QM7282371717","name":"Åh Hvilken Morgen","registered_at":"2026-06-07T22:08:49Z","spotify_id":"5jewr9rAPO80kaZCov1tgW","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4342619d9bd7f9af60a1bae8adf0c53ac3b07c3547c33ec5ae4817abece27769. 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/5jewr9rAPO80kaZCov1tgW.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/5jewr9rAPO80kaZCov1tgW.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b4dc37ba430471280e3d2a0c231ece5fa50f935e55f9b3298510bf5f6416832. 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/1RlgL5J1oV1FfhR7tjb9qW.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/1RlgL5J1oV1FfhR7tjb9qW.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc130c53f08ad09d045f6fc3900d99a1a6a07fc319c551f277b25b2bbf5bf624d. 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/1yWtNCxEeZQ1YeSSZsTMA1.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/1yWtNCxEeZQ1YeSSZsTMA1.
Verdens Bedste Dig (reprise) / Det Store Kommunenummer
{"copyright_id":"0xbad9e6aa4ccbebad36e05ac71b130c2b9e0731dfe44c65cd0d2301c0b38ee64d","isrc":"QM7282371722","name":"Verdens Bedste Dig (reprise) / Det Store Kommunenummer","registered_at":"2026-06-18T12:07:46Z","spotify_id":"4w5ltfmW7YHz5L3cCkRAki","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad9e6aa4ccbebad36e05ac71b130c2b9e0731dfe44c65cd0d2301c0b38ee64d. 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/4w5ltfmW7YHz5L3cCkRAki.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/4w5ltfmW7YHz5L3cCkRAki.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6727db9e4774f902f759e42b9f1d92461cc630b3eca9da81445d95105c901e5. 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/0kvh8SAMgVRCbbJ6NNkaT8.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/0kvh8SAMgVRCbbJ6NNkaT8.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e6900816358ecb1b7a67d576e2955e6bfde8c849737f7ebf341b34495e56abe. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T20:42:35Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0BGwbThcXz2nxhzk0BqV3C.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/0BGwbThcXz2nxhzk0BqV3C.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac47b8b58d1cf7fb768e0c9faab269c008d820857076e3efeb577a1f3f94736. 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/618pxwUR0QdfE7F3surFw9.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/618pxwUR0QdfE7F3surFw9.
{"copyright_id":"0xdf14f2a05498e22128de51bb115a152c0545225ebdc0a6c5236e7286c1ac076f","isrc":"QMBZ92183954","name":"Cirkus Summarum Sangen","registered_at":"2026-06-23T07:03:22Z","spotify_id":"5kgtIj9oaHsnofm4ZUABEx","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf14f2a05498e22128de51bb115a152c0545225ebdc0a6c5236e7286c1ac076f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5kgtIj9oaHsnofm4ZUABEx.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/5kgtIj9oaHsnofm4ZUABEx.