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 0x3fa29a193e812940b98138deb1ebc33c84a4a045e1911a014a9c8bb74bc67742. 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/10229c5c-b63b-4b1c-99d6-ec0d39ed0ac1.json and https://artists.proofprofile.net/proofs/artist/10229c5c-b63b-4b1c-99d6-ec0d39ed0ac1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xfa054270944ec279f1654d16fd89a3ee04e052a4a8a34f10fbdc1d8489c07ea3","isrc":"SE5W32201697","name":"Savanna Nights","registered_at":"2026-06-18T10:24:18Z","spotify_id":"3DJbedmEAaW4JWDL4XmywB","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 0xfa054270944ec279f1654d16fd89a3ee04e052a4a8a34f10fbdc1d8489c07ea3. 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/3DJbedmEAaW4JWDL4XmywB.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/3DJbedmEAaW4JWDL4XmywB.
{"copyright_id":"0x60b9d478653392b3ab4025c424c5d7888dcd45e7a84cda1a7a504f33b6b1e2c3","isrc":"SE5W32201698","name":"Into The Wilderness","registered_at":"2026-06-10T00:04:23Z","spotify_id":"1ApQaEodDVXqyjhfzruxsE","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60b9d478653392b3ab4025c424c5d7888dcd45e7a84cda1a7a504f33b6b1e2c3. 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/1ApQaEodDVXqyjhfzruxsE.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/1ApQaEodDVXqyjhfzruxsE.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb591a9d04ee84883d661613f30c23e2d6e16c5c8c6317a2ee2e1e152ef2f5fd. 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/4T69BdWfT3RhZfUhaUHlqa.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/4T69BdWfT3RhZfUhaUHlqa.
{"copyright_id":"0x0dab72f2e20b035778d3b651b036f0ea1d66a38ab25ddec96fe701bc70cbb494","isrc":"SE5W32201606","name":"Counting Crickets","registered_at":"2026-06-19T03:29:20Z","spotify_id":"12ZQIfUbPS52eOS7XivG5r","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dab72f2e20b035778d3b651b036f0ea1d66a38ab25ddec96fe701bc70cbb494. 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/12ZQIfUbPS52eOS7XivG5r.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/12ZQIfUbPS52eOS7XivG5r.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc53115f2fed4d7aa39e16bd546e6f4701ac180d7a32ac2f29d53c4ae1213c6. 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/1F8W0w1LuaWCaaw3oqe09r.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/1F8W0w1LuaWCaaw3oqe09r.
{"copyright_id":"0x79d512a5acb8f1440a48b0bb78df6e026b7c4e23d71cdab3162d6c408ded3a75","isrc":"SE5W32201608","name":"Night In The Wildlife","registered_at":"2026-06-25T05:28:25Z","spotify_id":"7Jk5bWkA1Lrc16j7I87mMe","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d512a5acb8f1440a48b0bb78df6e026b7c4e23d71cdab3162d6c408ded3a75. 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/7Jk5bWkA1Lrc16j7I87mMe.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/7Jk5bWkA1Lrc16j7I87mMe.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04819ced90363e7d061200f306b9a016f692bff9291353336b71050e49f69c46. 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/4NvJotgEGOGdhzHLl3mURK.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/4NvJotgEGOGdhzHLl3mURK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e4f631bb4feed84838446cae21eda5625a71694308d1640983ee3fe2c32fdb. 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/5SP27iVBdW42lMZph6ceNR.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/5SP27iVBdW42lMZph6ceNR.
{"copyright_id":"0x92da56db59c5f1c5d05b9e866dd25ac39b582d9887adcd766a8cd8e2ed08e942","isrc":"SE5W32201106","name":"Rainy Nights And Rainy Days","registered_at":"2026-06-18T12:48:35Z","spotify_id":"6yeXb48SVGA8QjCcnO9Xhv","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92da56db59c5f1c5d05b9e866dd25ac39b582d9887adcd766a8cd8e2ed08e942. 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/6yeXb48SVGA8QjCcnO9Xhv.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/6yeXb48SVGA8QjCcnO9Xhv.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdabf5b1e49afe6c17e0456e05249f83bd8454431a4589259ffc2bd984e4888fe. 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/4I6Z65KJVXsxv4YgWKgJBb.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/4I6Z65KJVXsxv4YgWKgJBb.
{"copyright_id":"0x25bcc927ee681454c73f0d63ea64accf22c85045dc6cd464e3b166ff77bfa85f","isrc":"SE5W32200712","name":"Drops In The Green","registered_at":"2026-06-08T00:40:30Z","spotify_id":"6idWKTKqgMJ1gRAZeD5bDV","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25bcc927ee681454c73f0d63ea64accf22c85045dc6cd464e3b166ff77bfa85f. 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/6idWKTKqgMJ1gRAZeD5bDV.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/6idWKTKqgMJ1gRAZeD5bDV.
{"copyright_id":"0xe2f7f4ae7dbfde0b642e2066195483f8da7d1e73ea329f923017add60aa31c7f","isrc":"SE5W32200713","name":"Rain In The Woods","registered_at":"2026-06-07T11:20:17Z","spotify_id":"4OeAMBEzqMeWTW51ns5YmI","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f7f4ae7dbfde0b642e2066195483f8da7d1e73ea329f923017add60aa31c7f. 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/4OeAMBEzqMeWTW51ns5YmI.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/4OeAMBEzqMeWTW51ns5YmI.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62aec8a5707764cbcc54153903f1dedee98cb22fa3187349581db7758b06d87f. 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/61DyLRwrghWPY9o93BoTNw.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/61DyLRwrghWPY9o93BoTNw.
{"copyright_id":"0x6f3279d2aa8caf3b2ebfa39477906ec4deacf2f955937c5bb25e6a96af7a5f34","isrc":"SE5W32102350","name":"Raining Down","registered_at":"2026-06-09T14:32:45Z","spotify_id":"4P7KZhk6tUHpehhyAfvXBn","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f3279d2aa8caf3b2ebfa39477906ec4deacf2f955937c5bb25e6a96af7a5f34. 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/4P7KZhk6tUHpehhyAfvXBn.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/4P7KZhk6tUHpehhyAfvXBn.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be1dddc7369c006afe86782e35d58596081cb85da2fb08ec7685aac5acfda35. 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/0uCtGrCoQPJBnUfD7SHZj8.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/0uCtGrCoQPJBnUfD7SHZj8.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ef3200cb7d066692eee8848b327be165774e344b83c2f8b3ff204bd527503b. 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/5NIj31hgXzoF8Dh1gju53B.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/5NIj31hgXzoF8Dh1gju53B.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ce24e35383b48a8c81888e349fcf52d8e7db0a18088b6dcbc7e02597e856e6. 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/7709cD193A9ASewVfJ849M.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/7709cD193A9ASewVfJ849M.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe199507b54a7c827fe2ab13e8956891413ee4456d2442390d02d3ea3ef4186dd. 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/2YUGgIVUWqZnZq0XseGdfv.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/2YUGgIVUWqZnZq0XseGdfv.
{"copyright_id":"0x06f54d217242c1470b24741f138a609ce0db9e12afb3cab4a59eca02180d23de","isrc":"SE5W32100966","name":"Birds In The Nature","registered_at":"2026-06-09T13:56:20Z","spotify_id":"2yji6rcGE5GTPcBOKwUv4M","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f54d217242c1470b24741f138a609ce0db9e12afb3cab4a59eca02180d23de. 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/2yji6rcGE5GTPcBOKwUv4M.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/2yji6rcGE5GTPcBOKwUv4M.
{"copyright_id":"0x363742fb4b9a6d58e1eb4c9db1c3d816459fb977a1ffdfc1a0c01da25401605f","isrc":"SE5W32100967","name":"Quite Day In The Woods","registered_at":"2026-06-24T07:52:37Z","spotify_id":"3P6QUfAfh9TBKGSFZjpay8","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x363742fb4b9a6d58e1eb4c9db1c3d816459fb977a1ffdfc1a0c01da25401605f. 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/3P6QUfAfh9TBKGSFZjpay8.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/3P6QUfAfh9TBKGSFZjpay8.
{"copyright_id":"0x535fba59e88ab4b6eb07f5ee51d1c106ec632624e02fea97dea02a34acaae6f4","isrc":"SE5W32100968","name":"Good Morning Mother Nature","registered_at":"2026-06-04T16:42:30Z","spotify_id":"6Mk7uY9pf1xGl8VqIzv7W3","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x535fba59e88ab4b6eb07f5ee51d1c106ec632624e02fea97dea02a34acaae6f4. 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/6Mk7uY9pf1xGl8VqIzv7W3.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/6Mk7uY9pf1xGl8VqIzv7W3.
{"copyright_id":"0x097cf973183ba15aeb4748946f05a23320b1ee178c6d97fbcc0257ec4e407313","isrc":"SE5W32100282","name":"Night time in the rainforest","registered_at":"2026-06-12T00:57:02Z","spotify_id":"7hHXpH6qehRlgSJICKZ4Th","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x097cf973183ba15aeb4748946f05a23320b1ee178c6d97fbcc0257ec4e407313. 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/7hHXpH6qehRlgSJICKZ4Th.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/7hHXpH6qehRlgSJICKZ4Th.
deep in the forest, where nothing can be heard, but robins