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 0xab8a9624173ab135401b4e87d4bf14a9b8ef4c44d947894c42960e1c768c4012. 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/42501479-8a96-4836-ab49-f47bcb5cbb88.json and https://artists.proofprofile.net/proofs/artist/42501479-8a96-4836-ab49-f47bcb5cbb88.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Serene Train Clickety-Clack for Soothing Sleep
{"copyright_id":"0x88ddb4ef8e527d102fb20bf119bab00cb993bbecc09cc55071321590d0ded542","isrc":"SE5IB2324999","name":"Serene Train Clickety-Clack for Soothing Sleep","registered_at":"2026-06-06T16:09:12Z","spotify_id":"3uxMAyLtf3pzhSCuhtkTjO","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 0x88ddb4ef8e527d102fb20bf119bab00cb993bbecc09cc55071321590d0ded542. 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/3uxMAyLtf3pzhSCuhtkTjO.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/3uxMAyLtf3pzhSCuhtkTjO.
Sleep Like a Baby with Train White Noise
{"copyright_id":"0x5bad73a8e578fd90991866081fa17cdc21740b3604e1a66995813e55a5e173c4","isrc":"SE5IB2325003","name":"Sleep Like a Baby with Train White Noise","registered_at":"2026-06-07T12:21:12Z","spotify_id":"6tZfzxLruuJ7cDviV2SzUF","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bad73a8e578fd90991866081fa17cdc21740b3604e1a66995813e55a5e173c4. 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/6tZfzxLruuJ7cDviV2SzUF.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/6tZfzxLruuJ7cDviV2SzUF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c37312741a192e8fc47630e187b6a47cde93f8ccc9d7f5b21200b6376c4fa0. 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/3ANYHvJllwYYxKt20U3FZi.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/3ANYHvJllwYYxKt20U3FZi.
{"copyright_id":"0x6524eab556c01a4d07fce6040d5ac6e1a42084794bbae25cedd2ab439f3a6230","isrc":"SE5IB1702013","name":"Freight Train Noise","registered_at":"2026-06-07T11:39:31Z","spotify_id":"2KJV4cimEyS5M3LQrF1HUu","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6524eab556c01a4d07fce6040d5ac6e1a42084794bbae25cedd2ab439f3a6230. 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/2KJV4cimEyS5M3LQrF1HUu.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/2KJV4cimEyS5M3LQrF1HUu.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e8a7655a60746b7f3836981601777d962392115870e5ab25a3137e113e92907. 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/3JH7DivN1orlSkpSSgQjIB.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/3JH7DivN1orlSkpSSgQjIB.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47379316516e0c8afdccb2be286d6fc038258b5767457e20e6ed45fb11b12441. 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/0gzmVDa2Ph4ASZlrS9tlsN.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/0gzmVDa2Ph4ASZlrS9tlsN.
{"copyright_id":"0xce71aa242206c7cacd87814d8f0fbbdae7cc986344928a585c80a320fadc78ea","isrc":"SE5IB1702015","name":"Train Cart Stereo Noise","registered_at":"2026-06-06T22:38:55Z","spotify_id":"0FC1tacGtMA1ri9sbS0lLG","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce71aa242206c7cacd87814d8f0fbbdae7cc986344928a585c80a320fadc78ea. 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/0FC1tacGtMA1ri9sbS0lLG.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/0FC1tacGtMA1ri9sbS0lLG.
{"copyright_id":"0x3d51cd91bc80a81b1be4569bfdc4d7b7ca3f85da77a49b76df12607e66b8d563","isrc":"SE5IB1702012","name":"Fall Asleep Cart Noise","registered_at":"2026-06-04T10:02:05Z","spotify_id":"69HPeOUxRupzMaZbxuHwtA","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d51cd91bc80a81b1be4569bfdc4d7b7ca3f85da77a49b76df12607e66b8d563. 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/69HPeOUxRupzMaZbxuHwtA.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/69HPeOUxRupzMaZbxuHwtA.
{"copyright_id":"0xb383ab4a861ffcb33fa263905f5b50cd27aff6adc178f88b775f025e08c1bc60","isrc":"SE5IB1702014","name":"Train Riding And Breaking","registered_at":"2026-06-06T16:08:22Z","spotify_id":"1kP7Cx3keqaQwwJJlJKsL5","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb383ab4a861ffcb33fa263905f5b50cd27aff6adc178f88b775f025e08c1bc60. 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/1kP7Cx3keqaQwwJJlJKsL5.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/1kP7Cx3keqaQwwJJlJKsL5.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2022b101ccbe5449b22893fd3d9c08ec880ab097fdf9702054c5f5537215bc21. 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/4iXqqc94IWbz5ne7jB2bNz.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/4iXqqc94IWbz5ne7jB2bNz.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905a39070f67413a12e79ae65d250946575238a7f404dab50342c416857d86fc. 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/5wUvHyQ9XCvoYqG9SyzJI3.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/5wUvHyQ9XCvoYqG9SyzJI3.
{"copyright_id":"0xa08daf4e2bbf8471dd2553dbc03c15aa67b94cc23cd8d29d8bf483714fe81490","isrc":"SE5IB1702020","name":"Train Fan Noise","registered_at":"2026-06-06T09:09:45Z","spotify_id":"7JDwLRJ22sDhYDMq8KFgtO","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08daf4e2bbf8471dd2553dbc03c15aa67b94cc23cd8d29d8bf483714fe81490. 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/7JDwLRJ22sDhYDMq8KFgtO.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/7JDwLRJ22sDhYDMq8KFgtO.