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 0x760ff6fa050e9a55a286ca1b0e0f5d3954632ab2efc001657a37391688659fa2. 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/4b4db9d1-d115-4db8-8c21-664ce7b53915.json and https://artists.proofprofile.net/proofs/artist/4b4db9d1-d115-4db8-8c21-664ce7b53915.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 0xd17a82b53b21733178881776be6723a8862c6473acf0cddddccc762d1d63e6e1. 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/6u9Q5LKmIy0x4EMwONMDmN.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/6u9Q5LKmIy0x4EMwONMDmN.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38920c6261015fd1bffc2311f19cc7e287406e203bb76eecaa80747745085a0c. 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/1pJrw8O7Zm0h3ux2gnB3rj.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/1pJrw8O7Zm0h3ux2gnB3rj.
{"copyright_id":"0x75d86a56065b0099e803a44e8d86a24baa57b7bbdf73d5d9b5f2a74d73bafaa3","isrc":"GX8LE2383675","name":"I'm So Sorry","registered_at":"2026-06-01T17:47:23Z","spotify_id":"1MlyMtFTogPbQ3xe0S4GDD","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d86a56065b0099e803a44e8d86a24baa57b7bbdf73d5d9b5f2a74d73bafaa3. 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/1MlyMtFTogPbQ3xe0S4GDD.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/1MlyMtFTogPbQ3xe0S4GDD.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea6baae95eebcb2ebd8e8d6b2dea8752a33b74c63aecc122bc3d4597d82fda6. 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/76uOV7B1Pm2PabFU7OSuC3.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/76uOV7B1Pm2PabFU7OSuC3.
{"copyright_id":"0x04f046dc018b9558362e4fe714f928e7a3b3f714ba3f10dfa2f18d76f754ee67","isrc":"GX8LE2378198","name":"Wedding Night","registered_at":"2026-06-04T07:43:59Z","spotify_id":"6ejNXSDsOYMkCyWIFW6Zsv","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f046dc018b9558362e4fe714f928e7a3b3f714ba3f10dfa2f18d76f754ee67. 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/6ejNXSDsOYMkCyWIFW6Zsv.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/6ejNXSDsOYMkCyWIFW6Zsv.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf47c3fad557a1e761626f5cf908b7875229bddd311a480cf609bc2b95e2536. 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/1bzlNYUNt5dQgQgONeNWH1.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/1bzlNYUNt5dQgQgONeNWH1.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598271f43fe3d94c201f8515742c1e1b2e7a231f989feea3599b88a0d5898025. 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/4ZgCMb7WGmqGxL7XpkYTx1.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/4ZgCMb7WGmqGxL7XpkYTx1.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0e006a402c7972596d862921a42bd243fc2faabb9abbe4d2f59d688238ea20. 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/485XGXNp7cvrPSaxJJbJ99.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/485XGXNp7cvrPSaxJJbJ99.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c21b6ec6e5f638b36031be62e5abf450fcb392c00b369ddb7b064aef0debc23. 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/6sUXYBiO84IXSVu7guLxmf.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/6sUXYBiO84IXSVu7guLxmf.
{"copyright_id":"0xc59f7d34a99a8f81bb731446fb0a113ac5096dbd59be44c2b130eabb052b923a","isrc":"GX8LE2338358","name":"Death Of A Heart","registered_at":"2026-06-04T11:41:14Z","spotify_id":"7fb0TaKNdhIL2elf5FHy8t","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc59f7d34a99a8f81bb731446fb0a113ac5096dbd59be44c2b130eabb052b923a. 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/7fb0TaKNdhIL2elf5FHy8t.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/7fb0TaKNdhIL2elf5FHy8t.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4425838f7ba49f921e7c0cfb4aaaaa62b87cd8d911bc00767ff0f997ed0ffeff. 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/2MJkQZEB0YNJbnQ59dZ0Pp.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/2MJkQZEB0YNJbnQ59dZ0Pp.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c241b8379137e52aad5e8e7670811937f9b1148a72c76f250d43b21e6998a3e. 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/0Z94dtWElamDwU4NrcGoUR.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/0Z94dtWElamDwU4NrcGoUR.
{"copyright_id":"0x2e3d88bde8e0facd51adc8f160358c4d517e47bc1abe9e3a731671849c232f12","isrc":"GX5MY2242845","name":"i just want to hold her","registered_at":"2026-06-01T12:28:53Z","spotify_id":"64nUZkvE9JB6jSj8QpmIbk","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e3d88bde8e0facd51adc8f160358c4d517e47bc1abe9e3a731671849c232f12. 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/64nUZkvE9JB6jSj8QpmIbk.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/64nUZkvE9JB6jSj8QpmIbk.
{"copyright_id":"0x2ffca169b401a3c085d2478755da69ad2af73a17930c6b8c39dcb262b0daa263","isrc":"GX5MY2242848","name":"loser monologue","registered_at":"2026-06-01T06:36:05Z","spotify_id":"1PNF8TGeKgU0SbW3guKg0f","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ffca169b401a3c085d2478755da69ad2af73a17930c6b8c39dcb262b0daa263. 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/1PNF8TGeKgU0SbW3guKg0f.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/1PNF8TGeKgU0SbW3guKg0f.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61949630c3f45709024f4878098c95311d35ef1daf433047ad6c5a5c04f4c59d. 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/6whOApl6TgeCGRwMM52tkl.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/6whOApl6TgeCGRwMM52tkl.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da38ca18735b34c7beaf6376740d0245c5a943b4171a005fd0612db6b819f1e. 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/4pHCz444L8yvFDar6FC0xd.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/4pHCz444L8yvFDar6FC0xd.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e4558db5d98c102590b5065d5d0b6b6f9678657cbe4204f994182312a093cb. 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/5orN4HYGUJS3AqewwwFixi.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/5orN4HYGUJS3AqewwwFixi.
{"copyright_id":"0x63e5552710b186b2d0d48f4043b31e42f2eba05a997acee4af9a109427e30a0e","isrc":"GX5MY2242876","name":"Last Friday Night","registered_at":"2026-06-04T14:14:22Z","spotify_id":"5MKhSKaCJruH3oQpiMyIo0","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e5552710b186b2d0d48f4043b31e42f2eba05a997acee4af9a109427e30a0e. 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/5MKhSKaCJruH3oQpiMyIo0.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/5MKhSKaCJruH3oQpiMyIo0.
i threw a rock off an overpass and killed a guy
{"copyright_id":"0x172347aad482f75345a590dde6964e9893a86b4f56438bb807cef5d4f0cce094","isrc":"GX5MY2242879","name":"i threw a rock off an overpass and killed a guy","registered_at":"2026-06-01T17:53:29Z","spotify_id":"1YEcWuxSowskA3A4uWKWFG","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x172347aad482f75345a590dde6964e9893a86b4f56438bb807cef5d4f0cce094. 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/1YEcWuxSowskA3A4uWKWFG.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/1YEcWuxSowskA3A4uWKWFG.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e5a6c5855502c50a3c691f73b2c70c510b2039cbf083c6c7a7292aeea70505. 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/4ERIeXLZ1XRlGTG5lX6Hbh.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/4ERIeXLZ1XRlGTG5lX6Hbh.