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 0x97efe1a31a5bcc0d384426c7c491e45f2e64223e2c272aaff1e8709862ff810f. 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/fa29b0bc-70e8-4264-8c7f-91bf0f7c1c14.json and https://artists.proofprofile.net/proofs/artist/fa29b0bc-70e8-4264-8c7f-91bf0f7c1c14.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 0xac9dbe33c77661bb05f1e447cb478ae8a61fc791d8ef3f2f214b82b2e2d73900. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/20n9AiKmUhId2qNz9zg7el.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/20n9AiKmUhId2qNz9zg7el.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dbe288d8a989163c5a14b8a3e95178a40c8dafc270d936f2f63d2f79df05281. 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/3RF2igIVJSCr19izf01C8h.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/3RF2igIVJSCr19izf01C8h.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd569de23e3d32074394a0b960dd1d25c873995d4013e8606cc6fc80601f2429. 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/4qjIIJiyq3IWhMHPHt1o2F.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/4qjIIJiyq3IWhMHPHt1o2F.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x206c446612e13d856fcb089d7ca3f5b94495f497585f75de30cc7c3b0a0fe967. 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/4mEtWdoHH4qKiTOCdPZW4m.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/4mEtWdoHH4qKiTOCdPZW4m.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5fb4fc51c3ea1af5dab7b23e6a7346d76d8f861bcd2524e39abf919d6596683. 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/412OKOfLSvgOtOHMexJigI.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/412OKOfLSvgOtOHMexJigI.
{"copyright_id":"0x0f5a91f1f40923b879ba427519d76e4af10ef394f1bdc2c74c6ca8cb8e2af83f","isrc":"PLS282300097","name":"Na drugi koniec świata","registered_at":"2026-06-06T18:21:17Z","spotify_id":"014eftjNP1hUBoUtesfkjv","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f5a91f1f40923b879ba427519d76e4af10ef394f1bdc2c74c6ca8cb8e2af83f. 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/014eftjNP1hUBoUtesfkjv.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/014eftjNP1hUBoUtesfkjv.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b889069df3a2d9c940926f89f461e7aa17501302bde8c9f223ae3a165787717. 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/64n51QZG2A5VcTxtPwuRuS.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/64n51QZG2A5VcTxtPwuRuS.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5861264d789681e0d847ec800462a952760f83df17d8bb2fec8abccdf4406e7. 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/7LXKyOlekCzkuClcb5kydd.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/7LXKyOlekCzkuClcb5kydd.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x338e17a76601132be2c6f0e3379939f538c3a2f600a8ea043cff700d185b5261. 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/1mSEiFG3OFg6G1ogHP7IXW.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/1mSEiFG3OFg6G1ogHP7IXW.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e277c08bb843c1c53be244b17e6e4258b25d2fb3929a8c44c6c6eca90853576. 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/4yzWyUheQbeb7otBhJ8bmT.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/4yzWyUheQbeb7otBhJ8bmT.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b889069df3a2d9c940926f89f461e7aa17501302bde8c9f223ae3a165787717. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/43PNY5xopYZaYPuZ3yTGJh.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/43PNY5xopYZaYPuZ3yTGJh.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd569de23e3d32074394a0b960dd1d25c873995d4013e8606cc6fc80601f2429. 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/2GP1XTWwij1tdNNTpUgdNU.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/2GP1XTWwij1tdNNTpUgdNU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5861264d789681e0d847ec800462a952760f83df17d8bb2fec8abccdf4406e7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/498yCvkpD6Yo4tOqU0U6tw.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/498yCvkpD6Yo4tOqU0U6tw.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x206c446612e13d856fcb089d7ca3f5b94495f497585f75de30cc7c3b0a0fe967. 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/4eFCwuTAL6m4rHYQFsPoZ7.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/4eFCwuTAL6m4rHYQFsPoZ7.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5fb4fc51c3ea1af5dab7b23e6a7346d76d8f861bcd2524e39abf919d6596683. 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/506YHbpuhGz8Yum3HimJgB.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/506YHbpuhGz8Yum3HimJgB.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dbe288d8a989163c5a14b8a3e95178a40c8dafc270d936f2f63d2f79df05281. 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/5vteuuQ7C2pAqPF8Bnx5Nr.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/5vteuuQ7C2pAqPF8Bnx5Nr.
{"copyright_id":"0x37b09864a70682d42606e8131d6fdcd0cfdb7dbef08c9b28bf99854f18d84c7d","isrc":"PLI292400836","name":"Cusztak Bywa - skit","registered_at":"2026-06-21T03:11:24Z","spotify_id":"1Wdzk2RpvugiClh6XmWu7E","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b09864a70682d42606e8131d6fdcd0cfdb7dbef08c9b28bf99854f18d84c7d. 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/1Wdzk2RpvugiClh6XmWu7E.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/1Wdzk2RpvugiClh6XmWu7E.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38687e2dc0659de806a83b604b90902fa89860ce69bd869ffea21f7a506cbd24. 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/3GrervTVdlXbiPoL4OrA7t.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/3GrervTVdlXbiPoL4OrA7t.