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 0x330198c2d3e4f8855cb2701d9d8a439bf6458738358191846d021ebb9d700d13. 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/cdb49fff-53d2-4a51-93f5-2f11b15e8865.json and https://artists.proofprofile.net/proofs/artist/cdb49fff-53d2-4a51-93f5-2f11b15e8865.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 0xee8562e435f10db4677cb442558a9a30c53f797437212c652af5d8498491e7e2. 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/2pO2kO7ORH2WvnZX2L5a2w.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/2pO2kO7ORH2WvnZX2L5a2w.
{"copyright_id":"0x2dd28d34a6b30eeae73aedacb9e2373ed5cc552a0cb278b9e7e22d876821e003","isrc":"PL2DY2400240","name":"RING RING","registered_at":"2026-06-04T07:07:33Z","spotify_id":"0ynrVsOb64GRtIFDg0aOCQ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd28d34a6b30eeae73aedacb9e2373ed5cc552a0cb278b9e7e22d876821e003. 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/0ynrVsOb64GRtIFDg0aOCQ.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/0ynrVsOb64GRtIFDg0aOCQ.
{"copyright_id":"0x2dd28d34a6b30eeae73aedacb9e2373ed5cc552a0cb278b9e7e22d876821e003","isrc":"PL2DY2400240","name":"RING RING","registered_at":"2026-06-04T07:07:33Z","spotify_id":"3VjDhZl73eK9VgvRQovsmw","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd28d34a6b30eeae73aedacb9e2373ed5cc552a0cb278b9e7e22d876821e003. 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/3VjDhZl73eK9VgvRQovsmw.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/3VjDhZl73eK9VgvRQovsmw.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c4ecc339a8511fb135ad8543973b33c3093a2373142ab988b576b77eaa27396. 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/4rWaEgtRiqqQIQaRuMxv1z.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/4rWaEgtRiqqQIQaRuMxv1z.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9bba70ade1fcc24f787b4dd274025686e119f688fc8d7e4249b7d9b1a486cc1. 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/0gUPvsLp8TQV8a9sDFKkqb.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/0gUPvsLp8TQV8a9sDFKkqb.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78ad3e8fb5c64ca9da246b1446d17cc118bb9d24bda747989fa6fe9746a54292. 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/6mUOFwxRVAqL8BdBNa4rQh.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/6mUOFwxRVAqL8BdBNa4rQh.
{"copyright_id":"0xe4da8bc7d2b6806f8bbcc1ff1690a1a0a47b784e64ebc486cce5d42e442dc441","isrc":"PL2DY2302399","name":"DINA AYADA","registered_at":"2026-06-05T11:24:09Z","spotify_id":"3kQfZEnR5ZVuOYZy7OGgks","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4da8bc7d2b6806f8bbcc1ff1690a1a0a47b784e64ebc486cce5d42e442dc441. 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/3kQfZEnR5ZVuOYZy7OGgks.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/3kQfZEnR5ZVuOYZy7OGgks.
{"copyright_id":"0xf7db938af1463b590e7fc4d18790914bea16f9400beee095ba9c9a8eb738b7c0","isrc":"PLI362333123","name":"SUPER SAIYANIN","registered_at":"2026-06-04T12:17:39Z","spotify_id":"5kL56PelYNcker6jClIUzY","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7db938af1463b590e7fc4d18790914bea16f9400beee095ba9c9a8eb738b7c0. 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/5kL56PelYNcker6jClIUzY.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/5kL56PelYNcker6jClIUzY.
{"copyright_id":"0xf0a1ebcfdf7985763cbbb35f4d64d4b8de79958e6ffdd9264f9ebec14c06426a","isrc":"PLA552400621","name":"Mercedes Freestyle (Intro)","registered_at":"2026-06-06T12:43:53Z","spotify_id":"2vPpWGBNvZeB25xBjcFcrY","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a1ebcfdf7985763cbbb35f4d64d4b8de79958e6ffdd9264f9ebec14c06426a. 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/2vPpWGBNvZeB25xBjcFcrY.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/2vPpWGBNvZeB25xBjcFcrY.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf211520f7bd6010d5d787b488c2081555fd1dc102d6e8bd05c26e49ac450f00e. 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/3atMFG0mlK2M552hbw3DPx.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/3atMFG0mlK2M552hbw3DPx.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb4eda670538d5561db3f9b5841687967d8e173aba579809e5e742547102d01. 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/6lM7Oz87VxryD4WyctRoiC.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/6lM7Oz87VxryD4WyctRoiC.
Obudziłem się w Bukareszcie - Def Jam World Tour
Obudziłem się w Bukareszcie (Def Jam World Tour)
{"copyright_id":"0x4daa76c3bb30787a0c37a323ebe7a96edc62154f185d2e442ac7f00afccbcf1c","isrc":"PLUM72400180","name":"Obudziłem się w Bukareszcie - Def Jam World Tour","registered_at":"2026-06-04T08:14:48Z","spotify_id":"6pLzJmfqpaca8QGb19JZDp","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4daa76c3bb30787a0c37a323ebe7a96edc62154f185d2e442ac7f00afccbcf1c. 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/6pLzJmfqpaca8QGb19JZDp.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/6pLzJmfqpaca8QGb19JZDp.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc889ef8a6358839d0cdce8b4b6e8a9868cadeb91917734fa98901d9d2c4813bc. 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/4U1ugeiUPBrW1Of0OnYjXj.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/4U1ugeiUPBrW1Of0OnYjXj.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d367115195be60f251ecee1619e15308272927055d288e2e6b106785af1f24f. 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/5XBqrvH33G1MvfESTMR1XO.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/5XBqrvH33G1MvfESTMR1XO.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe434e2962ac85a8ddf262b6da5ed51dfa19f19874054c8d48dce932bd0ae7378. 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/4II2mvGJcwuiXJe4CvLUIe.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/4II2mvGJcwuiXJe4CvLUIe.
{"copyright_id":"0x9bed604dacba105f6ad5dfa7ecbe2e7093308d3b00c61a79e2d966ddaa2cf44a","isrc":"PL2DY2400435","name":"TEN GOŚĆ","registered_at":"2026-06-06T06:09:23Z","spotify_id":"5q8BdxwqEeJ5UTtV6LmMxV","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bed604dacba105f6ad5dfa7ecbe2e7093308d3b00c61a79e2d966ddaa2cf44a. 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/5q8BdxwqEeJ5UTtV6LmMxV.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/5q8BdxwqEeJ5UTtV6LmMxV.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36da0158faba33ba1dc661a8cb7d1d56328f786408064df8a18b1f7dac80660b. 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/11wCW0JW8CPv70Zc5iqYbA.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/11wCW0JW8CPv70Zc5iqYbA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f3cae5538ddbc80ecd387d13a5784670e7909f4bf3ef0583172c023060a2eb5. 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/6RdzZJWgHsASQfazuGqohO.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/6RdzZJWgHsASQfazuGqohO.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x418cdfa50f9004efbfb8dfeee2df7d385c9983c37c4adb8e5953857d4ba56320. 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/57C538OaFX7zOY9RSWsj80.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/57C538OaFX7zOY9RSWsj80.