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 0x173dfae2868b378cf120aa7746257bd70c4b5bdd13df6d0b22bc6a1815763396. 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/523e9273-3fee-44f2-a4b1-3d3a2802f0d7.json and https://artists.proofprofile.net/proofs/artist/523e9273-3fee-44f2-a4b1-3d3a2802f0d7.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 0x582efb71a3fac56d462f52485fe06b39f5a059b17b76eaf5e5c79f74d1a2df17. 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/49wkHTwFt51mATe1y8k2Pi.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/49wkHTwFt51mATe1y8k2Pi.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae3e4b49b94e845619084f6d9b8659ee6b2dfc9bec1619592f3e693679c2b46d. 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/4zT7pxLdAV8lafHUNpi9dv.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/4zT7pxLdAV8lafHUNpi9dv.
{"copyright_id":"0x289a716d593bae6a4bb9326133cd3fbcbc6489f3a5abdae1705e596cb8ee5844","isrc":"DEGC61501400","name":"Blätter im Herbst","registered_at":"2026-06-10T14:34:24Z","spotify_id":"5GUgqNGEGTEjQ794af5Tpa","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289a716d593bae6a4bb9326133cd3fbcbc6489f3a5abdae1705e596cb8ee5844. 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/5GUgqNGEGTEjQ794af5Tpa.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/5GUgqNGEGTEjQ794af5Tpa.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f88c9a74ba654917c626f6d20093ca209c9dd545fd50b2faaef70e97152d8b. 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/29y4PjJ84AzPtc9ticubnU.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/29y4PjJ84AzPtc9ticubnU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad8b2c44472c0197b66d9fcb0eac81bafd00b4193148b8575f19dfd33fb73606. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3LeuI5yi4Lpgy8LmxMDwGm.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/3LeuI5yi4Lpgy8LmxMDwGm.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a670a2cd48113d130f63420a1e3f03f55508b79ff6ce01906e17a066b94043. 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/3oJmK0msJ9BciiJWfoP0GF.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/3oJmK0msJ9BciiJWfoP0GF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856ad44da5b2b2e47e253fd44371c8420639047e8cce34280d178d3b8d3855f2. 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/5ADs9hkGUnsPr8JMAQMNm0.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/5ADs9hkGUnsPr8JMAQMNm0.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b1383a7645c8c82273d6723ef04d31a806e9e94e049b42f24ba811e784d89d. 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/0xuJI2YszLmu24ucmay2Yw.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/0xuJI2YszLmu24ucmay2Yw.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc79c79823a559b0b16529ac3ab087c10b0f334c061b170ba6e81d88ebadfc30e. 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/5HD8UI2ZUh65h03BDFdIn3.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/5HD8UI2ZUh65h03BDFdIn3.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95be7d8daa78948cbcd7e7ee6b15f128fb15569c9df5f2881fa8ffb5169ec4fb. 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/02nHWgLmASMAr8gD4nuTeT.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/02nHWgLmASMAr8gD4nuTeT.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cbaa20b4d575c195858aec279f6a63057cd88e876128009feea3290a9676b84. 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/7iI2mq6WBO28B1rzw1RYNk.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/7iI2mq6WBO28B1rzw1RYNk.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec5754e098e44a98270dd269c070cd45edfd556ae465cc71355285242d48a1ac. 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/2BNP5HbkF39tkBSMKEWym1.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/2BNP5HbkF39tkBSMKEWym1.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x044227f410d4c23de0ac9e949a46af7b6a41771fa0107c64552a6f7a0ae6c994. 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/6JFkMZxApjWmoVfNmUD8pt.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/6JFkMZxApjWmoVfNmUD8pt.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b05f77bf9c8c8b376969f213d4e5394178524811038ef4f03943203447fc37b. 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/4xuDa5YfgB2ryxYsqaxVH7.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/4xuDa5YfgB2ryxYsqaxVH7.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x587950f0c3a5ed1bf0fff44c177c4a8f140d147660470dc5001fe59cd522230a. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/78V9Noo2dqQryBa8OAMD34.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/78V9Noo2dqQryBa8OAMD34.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x587950f0c3a5ed1bf0fff44c177c4a8f140d147660470dc5001fe59cd522230a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3uIGb1vcJCTzDuRP1uI6nh.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/3uIGb1vcJCTzDuRP1uI6nh.
{"copyright_id":"0x587950f0c3a5ed1bf0fff44c177c4a8f140d147660470dc5001fe59cd522230a","isrc":"DEQ022380230","name":"Strausberger Platz","registered_at":"2026-06-25T20:01:06Z","spotify_id":"3mD1vuBTjDkRJVgZ4ykVsz","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x587950f0c3a5ed1bf0fff44c177c4a8f140d147660470dc5001fe59cd522230a. 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/3mD1vuBTjDkRJVgZ4ykVsz.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/3mD1vuBTjDkRJVgZ4ykVsz.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f107c5a2747500e4a26eef85700df4c44b2dc04bbff63a2850c667c163dc97f. 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/01XxCONWyE7qmYewUPEQNJ.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/01XxCONWyE7qmYewUPEQNJ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x514253519a8e205bcbbcb8f97206aa9d25c0a05ea44e5448e94bb2ee7bf4cfa5. 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/4mzvtwvoz1nPJcv89F5eqa.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/4mzvtwvoz1nPJcv89F5eqa.