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 0x16e197f30d7d49da0b0d065989da5d158c5327a1b85e9a80a85ccaad8df09768. 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/303bb885-b9fc-4b26-9ee0-3f77b8ca54ab.json and https://artists.proofprofile.net/proofs/artist/303bb885-b9fc-4b26-9ee0-3f77b8ca54ab.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 0xdd614d35470323472280bdf678176b1fde0f190ba492c25f99b67bb3b9746c95. 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/13Z2T3dQOY8HHn3dq7dbuN.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/13Z2T3dQOY8HHn3dq7dbuN.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ed5cda125e4aff8f33af6ed91e452b276cb60ce6a65b74ef71768556f4d732. 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/2wvYHbg1rYpyfoV7eZMHtM.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/2wvYHbg1rYpyfoV7eZMHtM.
{"copyright_id":"0x000f7e9cf8b44c9de1770f2743100d0da676d60e931be696e6a131f09e2143fa","isrc":"QZTAZ2537518","name":"Vi åker i min raggarbil","registered_at":"2026-06-25T14:28:23Z","spotify_id":"6hwFCBFahPNSyJB15LzLAM","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000f7e9cf8b44c9de1770f2743100d0da676d60e931be696e6a131f09e2143fa. 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/6hwFCBFahPNSyJB15LzLAM.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/6hwFCBFahPNSyJB15LzLAM.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4fe1648a3e6ddf95b9a6f700c0dcaf667c5e677e4c651a2e61c1925b87f4c44. 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/4jEqhFZh9QcPt4ss9nfX8W.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/4jEqhFZh9QcPt4ss9nfX8W.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x793d22c4391c33d389d9cb7ede5c8d384da1931bddd6c7bd37398eb9e169c65b. 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/5HliFN3mQ3TMxa3R8nZWBA.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/5HliFN3mQ3TMxa3R8nZWBA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf20539f4e619514e330a4023b277640e09f9efd99a2f8e664e2e60c6c3c3e9e. 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/1PNyfKwgVByvVsBEYtfCs1.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/1PNyfKwgVByvVsBEYtfCs1.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1cb904b2c8999c1ea14e6514d3663f226ab86de957bd6054797f7fbac8807fc. 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/11Wmukh8H2a8dhdr4YtfV0.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/11Wmukh8H2a8dhdr4YtfV0.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e4a68276495f3bb2967f30f72a38bbc69ef2c2fccff807334838d079440a63b. 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/08tBDlfwClbRXfAPVa1IXn.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/08tBDlfwClbRXfAPVa1IXn.
{"copyright_id":"0xd78b5dbebf5600adbabc65cf74e0f84c60548b1745bf009e2e67acf160a4f079","isrc":"SE6HN2436942","name":"SVAGA MINNEN","registered_at":"2026-06-25T01:36:17Z","spotify_id":"1hdn5GymHgN5TaykrFrG8U","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78b5dbebf5600adbabc65cf74e0f84c60548b1745bf009e2e67acf160a4f079. 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/1hdn5GymHgN5TaykrFrG8U.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/1hdn5GymHgN5TaykrFrG8U.
{"copyright_id":"0x544b078522bd1fcf18a06bd2860269ec5287fce5c0e624bdd6cfef37a638a64b","isrc":"SE6HN2224486","name":"Glömma ditt ex","registered_at":"2026-06-08T09:06:55Z","spotify_id":"2Guzs43XTcskPlhyKL4HGh","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x544b078522bd1fcf18a06bd2860269ec5287fce5c0e624bdd6cfef37a638a64b. 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/2Guzs43XTcskPlhyKL4HGh.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/2Guzs43XTcskPlhyKL4HGh.
{"copyright_id":"0x1055f2243df96e3a10e83fe2ee343c09a12061794ef09b3b05edca79028ea039","isrc":"SE6HN2224488","name":"VI SKA RÖKA WEED","registered_at":"2026-06-08T09:05:03Z","spotify_id":"3rbVFkTHUKqUyhQbTuObQl","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1055f2243df96e3a10e83fe2ee343c09a12061794ef09b3b05edca79028ea039. 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/3rbVFkTHUKqUyhQbTuObQl.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/3rbVFkTHUKqUyhQbTuObQl.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde7e68b4d631e360bce4b01d50f188691aeff95c30d325256d488f779b431d6a. 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/3k6JYIQytz3jRDDu6MaRaY.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/3k6JYIQytz3jRDDu6MaRaY.